Merge branch 'main' into jiejaitt-feature/CSRF-using-Proxy-Middleware

.github/README.md

@@ -124,7 +124,7 @@ We **listen** to our users in [issues](https://github.com/gofiber/fiber/issues),
 
 ## ⚠️ Limitations
 
-- Due to Fiber's usage of unsafe, the library may not always be compatible with the latest Go version. Fiber v3 has been tested with Go version 1.23.
+- Due to Fiber's usage of unsafe, the library may not always be compatible with the latest Go version. Fiber v3 has been tested with Go version 1.23 or higher.
 - Fiber is not compatible with net/http interfaces. This means you will not be able to use projects like gqlgen, go-swagger, or any others which are part of the net/http ecosystem.
 
 ## 👀 Examples
@@ -708,7 +708,7 @@ List of externally hosted middleware modules and maintained by the [Fiber team](
 | :------------------------------------------------ | :-------------------------------------------------------------------------------------------------------------------- |
 | [contrib](https://github.com/gofiber/contrib)   | Third-party middlewares                                                                                               |
 | [storage](https://github.com/gofiber/storage)   | Premade storage drivers that implement the Storage interface, designed to be used with various Fiber middlewares.     |
-| [template](https://github.com/gofiber/template) | This package contains 9 template engines that can be used with Fiber `v3`. Go version 1.23 or higher is required.      |
+| [template](https://github.com/gofiber/template) | This package contains 9 template engines that can be used with Fiber.      |
 
 ## 🕶️ Awesome List
 

.github/codecov.yml

@@ -0,0 +1,9 @@
+# ignore files or directories to be scanned by codecov
+ignore:
+  - "./docs/"
+
+coverage:
+  status:
+    project:
+      default:
+        threshold: 0.5%

.github/release-drafter.yml

@@ -17,6 +17,7 @@ categories:
   - title: '🧹 Updates'
     labels:
       - '🧹 Updates'
+      - '⚡️ Performance'
   - title: '🐛 Fixes'
     labels:
       - '☢️ Bug'
@@ -48,6 +49,7 @@ version-resolver:
       - '☢️ Bug'
       - '🤖 Dependencies'
       - '🧹 Updates'
+      - '⚡️ Performance'
   default: patch
 template: |
     $CHANGES

.github/release.yml

@@ -12,6 +12,7 @@ changelog:
     - title: '🧹 Updates'
       labels:
         - '🧹 Updates'
+        - '⚡️ Performance'
     - title: '🐛 Bug Fixes'
       labels:
         - '☢️ Bug'

.github/workflows/benchmark.yml

@@ -3,11 +3,11 @@ on:
     branches:
       - master
       - main
-    paths-ignore:
-      - "**/*.md"
+    paths:
+      - "**.go"
   pull_request:
-    paths-ignore:
-      - "**/*.md"
+    paths:
+      - "**.go"
 
 permissions:
   # deployments permission to deploy GitHub pages website

.github/workflows/linter.yml

@@ -37,4 +37,7 @@ jobs:
         uses: golangci/golangci-lint-action@v6
         with:
           # NOTE: Keep this in sync with the version from .golangci.yml
-          version: v1.62.2
+          version: v1.64.7
+          # NOTE(ldez): temporary workaround
+          install-mode: goinstall
+

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
   unit:
     strategy:
       matrix:
-        go-version: [1.23.x]
+        go-version: [1.23.x, 1.24.x]
         platform: [ubuntu-latest, windows-latest, macos-latest, macos-13]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -32,7 +32,7 @@ jobs:
 
       - name: Upload coverage reports to Codecov
         if: ${{ matrix.platform == 'ubuntu-latest' && matrix.go-version == '1.23.x' }}
-        uses: codecov/codecov-action@v5.3.1
+        uses: codecov/codecov-action@v5.4.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.txt

.golangci.yml

@@ -7,7 +7,6 @@ run:
 
 output:
   sort-results: true
-  uniq-by-line: false
 
 linters-settings:
   depguard:
@@ -187,7 +186,7 @@ linters-settings:
       - name: unchecked-type-assertion
         disabled: true # TODO: Do not disable
       - name: unhandled-error
-        arguments: ['bytes\.Buffer\.Write']
+        disabled: true
 
   stylecheck:
     checks:
@@ -250,7 +249,10 @@ issues:
   max-issues-per-linter: 0
   max-same-issues: 0
   exclude-dirs:
-    - internal # TODO: Do not ignore interal packages
+    - internal # TODO: Do not ignore internal packages
+  exclude-files:
+    - '_msgp\.go'
+    - '_msgp_test\.go'
   exclude-rules:
     - linters:
         - err113
@@ -263,7 +265,10 @@ issues:
       linters:
         - bodyclose
         - err113
-  # fix: true
+    - source: 'fmt.Fprintf?'
+      linters:
+        - errcheck
+        - revive
 
 linters:
   enable:
@@ -358,7 +363,6 @@ linters:
     - stylecheck
     # - tagalign # TODO: Enable
     - tagliatelle
-    - tenv
     - testableexamples
     - testifylint
     # - testpackage # TODO: Enable

Makefile

@@ -35,7 +35,7 @@ markdown:
 ## lint: 🚨 Run lint checks
 .PHONY: lint
 lint:
-	go run github.com/golangci/golangci-lint/cmd/golangci-lint@v1.62.2 run ./...
+	golangci-lint run
 
 ## test: 🚦 Execute all tests
 .PHONY: test

addon/retry/README.md

@@ -19,17 +19,47 @@ a jitter is a way to break synchronization across the client and avoid collision
 ## Signatures
 
 ```go
-func NewExponentialBackoff(config ...Config) *ExponentialBackoff
+func NewExponentialBackoff(config ...retry.Config) *retry.ExponentialBackoff
 ```
 
 ## Examples
 
-Firstly, import the addon from Fiber,
-
 ```go
+package main
+
 import (
+    "fmt"
+
     "github.com/gofiber/fiber/v3/addon/retry"
+    "github.com/gofiber/fiber/v3/client"
 )
+
+func main() {
+    expBackoff := retry.NewExponentialBackoff(retry.Config{})
+
+    // Local variables that will be used inside of Retry
+    var resp *client.Response
+    var err error
+
+    // Retry a network request and return an error to signify to try again
+    err = expBackoff.Retry(func() error {
+        client := client.New()
+        resp, err = client.Get("https://gofiber.io")
+        if err != nil {
+            return fmt.Errorf("GET gofiber.io failed: %w", err)
+        }
+        if resp.StatusCode() != 200 {
+            return fmt.Errorf("GET gofiber.io did not return OK 200")
+        }
+        return nil
+    })
+
+    // If all retries failed, panic
+    if err != nil {
+        panic(err)
+    }
+    fmt.Printf("GET gofiber.io succeeded with status code %d\n", resp.StatusCode())
+}
 ```
 
 ## Default Config
@@ -58,28 +88,23 @@ type Config struct {
     //
     // Optional. Default: 1 * time.Second
     InitialInterval time.Duration
-    
+
     // MaxBackoffTime defines maximum time duration for backoff algorithm. When
     // the algorithm is reached this time, rest of the retries will be maximum
     // 32 seconds.
     //
     // Optional. Default: 32 * time.Second
     MaxBackoffTime time.Duration
-    
+
     // Multiplier defines multiplier number of the backoff algorithm.
     //
     // Optional. Default: 2.0
     Multiplier float64
-    
+
     // MaxRetryCount defines maximum retry count for the backoff algorithm.
     //
     // Optional. Default: 10
     MaxRetryCount int
-    
-    // currentInterval tracks the current waiting time.
-    //
-    // Optional. Default: 1 * time.Second
-    currentInterval time.Duration
 }
 ```
 

app.go

@@ -106,10 +106,12 @@ type App struct {
 	tlsHandler *TLSHandler
 	// Mount fields
 	mountFields *mountFields
+	// state management
+	state *State
 	// Route stack divided by HTTP methods
 	stack [][]*Route
 	// Route stack divided by HTTP methods and route prefixes
-	treeStack []map[string][]*Route
+	treeStack []map[int][]*Route
 	// custom binders
 	customBinders []CustomBinder
 	// customConstraints is a list of external constraints
@@ -456,17 +458,29 @@ const (
 	DefaultWriteBufferSize = 4096
 )
 
+const (
+	methodGet = iota
+	methodHead
+	methodPost
+	methodPut
+	methodDelete
+	methodConnect
+	methodOptions
+	methodTrace
+	methodPatch
+)
+
 // HTTP methods enabled by default
 var DefaultMethods = []string{
-	MethodGet,
-	MethodHead,
-	MethodPost,
-	MethodPut,
-	MethodDelete,
-	MethodConnect,
-	MethodOptions,
-	MethodTrace,
-	MethodPatch,
+	methodGet:     MethodGet,
+	methodHead:    MethodHead,
+	methodPost:    MethodPost,
+	methodPut:     MethodPut,
+	methodDelete:  MethodDelete,
+	methodConnect: MethodConnect,
+	methodOptions: MethodOptions,
+	methodTrace:   MethodTrace,
+	methodPatch:   MethodPatch,
 }
 
 // DefaultErrorHandler that process return errors from handlers
@@ -515,6 +529,9 @@ func New(config ...Config) *App {
 	// Define mountFields
 	app.mountFields = newMountFields(app)
 
+	// Define state
+	app.state = newState()
+
 	// Override config if provided
 	if len(config) > 0 {
 		app.config = config[0]
@@ -581,7 +598,7 @@ func New(config ...Config) *App {
 
 	// Create router stack
 	app.stack = make([][]*Route, len(app.config.RequestMethods))
-	app.treeStack = make([]map[string][]*Route, len(app.config.RequestMethods))
+	app.treeStack = make([]map[int][]*Route, len(app.config.RequestMethods))
 
 	// Override colors
 	app.config.ColorScheme = defaultColors(app.config.ColorScheme)
@@ -750,7 +767,7 @@ func (app *App) Use(args ...any) Router {
 			return app
 		}
 
-		app.register([]string{methodUse}, prefix, nil, nil, handlers...)
+		app.register([]string{methodUse}, prefix, nil, handlers...)
 	}
 
 	return app
@@ -758,67 +775,67 @@ func (app *App) Use(args ...any) Router {
 
 // Get registers a route for GET methods that requests a representation
 // of the specified resource. Requests using GET should only retrieve data.
-func (app *App) Get(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodGet}, path, handler, middleware...)
+func (app *App) Get(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodGet}, path, handler, handlers...)
 }
 
 // Head registers a route for HEAD methods that asks for a response identical
 // to that of a GET request, but without the response body.
-func (app *App) Head(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodHead}, path, handler, middleware...)
+func (app *App) Head(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodHead}, path, handler, handlers...)
 }
 
 // Post registers a route for POST methods that is used to submit an entity to the
 // specified resource, often causing a change in state or side effects on the server.
-func (app *App) Post(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodPost}, path, handler, middleware...)
+func (app *App) Post(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodPost}, path, handler, handlers...)
 }
 
 // Put registers a route for PUT methods that replaces all current representations
 // of the target resource with the request payload.
-func (app *App) Put(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodPut}, path, handler, middleware...)
+func (app *App) Put(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodPut}, path, handler, handlers...)
 }
 
 // Delete registers a route for DELETE methods that deletes the specified resource.
-func (app *App) Delete(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodDelete}, path, handler, middleware...)
+func (app *App) Delete(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodDelete}, path, handler, handlers...)
 }
 
 // Connect registers a route for CONNECT methods that establishes a tunnel to the
 // server identified by the target resource.
-func (app *App) Connect(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodConnect}, path, handler, middleware...)
+func (app *App) Connect(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodConnect}, path, handler, handlers...)
 }
 
 // Options registers a route for OPTIONS methods that is used to describe the
 // communication options for the target resource.
-func (app *App) Options(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodOptions}, path, handler, middleware...)
+func (app *App) Options(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodOptions}, path, handler, handlers...)
 }
 
 // Trace registers a route for TRACE methods that performs a message loop-back
 // test along the path to the target resource.
-func (app *App) Trace(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodTrace}, path, handler, middleware...)
+func (app *App) Trace(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodTrace}, path, handler, handlers...)
 }
 
 // Patch registers a route for PATCH methods that is used to apply partial
 // modifications to a resource.
-func (app *App) Patch(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add([]string{MethodPatch}, path, handler, middleware...)
+func (app *App) Patch(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add([]string{MethodPatch}, path, handler, handlers...)
 }
 
 // Add allows you to specify multiple HTTP methods to register a route.
-func (app *App) Add(methods []string, path string, handler Handler, middleware ...Handler) Router {
-	app.register(methods, path, nil, handler, middleware...)
+func (app *App) Add(methods []string, path string, handler Handler, handlers ...Handler) Router {
+	app.register(methods, path, nil, append([]Handler{handler}, handlers...)...)
 
 	return app
 }
 
 // All will register the handler on all HTTP methods
-func (app *App) All(path string, handler Handler, middleware ...Handler) Router {
-	return app.Add(app.config.RequestMethods, path, handler, middleware...)
+func (app *App) All(path string, handler Handler, handlers ...Handler) Router {
+	return app.Add(app.config.RequestMethods, path, handler, handlers...)
 }
 
 // Group is used for Routes with common prefix to define a new sub-router with optional middleware.
@@ -828,7 +845,7 @@ func (app *App) All(path string, handler Handler, middleware ...Handler) Router
 func (app *App) Group(prefix string, handlers ...Handler) Router {
 	grp := &Group{Prefix: prefix, app: app}
 	if len(handlers) > 0 {
-		app.register([]string{methodUse}, prefix, grp, nil, handlers...)
+		app.register([]string{methodUse}, prefix, grp, handlers...)
 	}
 	if err := app.hooks.executeOnGroupHooks(*grp); err != nil {
 		panic(err)
@@ -894,6 +911,13 @@ func (app *App) HandlersCount() uint32 {
 //
 // Make sure the program doesn't exit and waits instead for Shutdown to return.
 //
+// Important: app.Listen() must be called in a separate goroutine, otherwise shutdown hooks will not work
+// as Listen() is a blocking operation. Example:
+//
+//	go app.Listen(":3000")
+//	// ...
+//	app.Shutdown()
+//
 // Shutdown does not close keepalive connections so its recommended to set ReadTimeout to something else than 0.
 func (app *App) Shutdown() error {
 	return app.ShutdownWithContext(context.Background())
@@ -918,17 +942,21 @@ func (app *App) ShutdownWithTimeout(timeout time.Duration) error {
 //
 // ShutdownWithContext does not close keepalive connections so its recommended to set ReadTimeout to something else than 0.
 func (app *App) ShutdownWithContext(ctx context.Context) error {
-	if app.hooks != nil {
-		// TODO: check should be defered?
-		app.hooks.executeOnShutdownHooks()
-	}
-
 	app.mutex.Lock()
 	defer app.mutex.Unlock()
+
+	var err error
+
 	if app.server == nil {
 		return ErrNotRunning
 	}
-	return app.server.ShutdownWithContext(ctx)
+
+	// Execute the Shutdown hook
+	app.hooks.executeOnPreShutdownHooks()
+	defer app.hooks.executeOnPostShutdownHooks(err)
+
+	err = app.server.ShutdownWithContext(ctx)
+	return err
 }
 
 // Server returns the underlying fasthttp server
@@ -941,6 +969,11 @@ func (app *App) Hooks() *Hooks {
 	return app.hooks
 }
 
+// State returns the state struct to store global data in order to share it between handlers.
+func (app *App) State() *State {
+	return app.state
+}
+
 var ErrTestGotEmptyResponse = errors.New("test: got empty response")
 
 // TestConfig is a struct holding Test settings
@@ -1013,7 +1046,7 @@ func (app *App) Test(req *http.Request, config ...TestConfig) (*http.Response, e
 		select {
 		case err = <-channel:
 		case <-time.After(cfg.Timeout):
-			conn.Close() //nolint:errcheck, revive // It is fine to ignore the error here
+			conn.Close() //nolint:errcheck // It is fine to ignore the error here
 			if cfg.FailOnTimeout {
 				return nil, os.ErrDeadlineExceeded
 			}

app_test.go

@@ -21,6 +21,7 @@ import (
 	"regexp"
 	"runtime"
 	"strings"
+	"sync"
 	"testing"
 	"time"
 
@@ -402,7 +403,7 @@ func Test_App_serverErrorHandler_Internal_Error(t *testing.T) {
 	t.Parallel()
 	app := New()
 	msg := "test err"
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	app.serverErrorHandler(c.fasthttp, errors.New(msg))
 	require.Equal(t, string(c.fasthttp.Response.Body()), msg)
@@ -412,7 +413,7 @@ func Test_App_serverErrorHandler_Internal_Error(t *testing.T) {
 func Test_App_serverErrorHandler_Network_Error(t *testing.T) {
 	t.Parallel()
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	app.serverErrorHandler(c.fasthttp, &net.DNSError{
 		Err:       "test error",
@@ -479,14 +480,10 @@ func Test_App_Use_Params(t *testing.T) {
 	require.NoError(t, err, "app.Test(req)")
 	require.Equal(t, 200, resp.StatusCode, "Status code")
 
-	defer func() {
-		if err := recover(); err != nil {
-			require.Equal(t, "use: invalid handler func()\n", fmt.Sprintf("%v", err))
-		}
-	}()
-
-	app.Use("/:param/*", func() {
-		// this should panic
+	require.PanicsWithValue(t, "use: invalid handler func()\n", func() {
+		app.Use("/:param/*", func() {
+			// this should panic
+		})
 	})
 }
 
@@ -930,20 +927,29 @@ func Test_App_ShutdownWithTimeout(t *testing.T) {
 	})
 
 	ln := fasthttputil.NewInmemoryListener()
+	serverReady := make(chan struct{}) // Signal that the server is ready to start
+
 	go func() {
+		serverReady <- struct{}{}
 		err := app.Listener(ln)
 		assert.NoError(t, err)
 	}()
 
-	time.Sleep(1 * time.Second)
+	<-serverReady // Waiting for the server to be ready
+
+	// Create a connection and send a request
+	connReady := make(chan struct{})
 	go func() {
 		conn, err := ln.Dial()
 		assert.NoError(t, err)
 
 		_, err = conn.Write([]byte("GET / HTTP/1.1\r\nHost: google.com\r\n\r\n"))
 		assert.NoError(t, err)
+
+		connReady <- struct{}{} // Signal that the request has been sent
 	}()
-	time.Sleep(1 * time.Second)
+
+	<-connReady // Waiting for the request to be sent
 
 	shutdownErr := make(chan error)
 	go func() {
@@ -964,46 +970,130 @@ func Test_App_ShutdownWithTimeout(t *testing.T) {
 func Test_App_ShutdownWithContext(t *testing.T) {
 	t.Parallel()
 
-	app := New()
-	app.Get("/", func(ctx Ctx) error {
-		time.Sleep(5 * time.Second)
-		return ctx.SendString("body")
+	t.Run("successful shutdown", func(t *testing.T) {
+		t.Parallel()
+		app := New()
+
+		// Fast request that should complete
+		app.Get("/", func(c Ctx) error {
+			return c.SendString("OK")
+		})
+
+		ln := fasthttputil.NewInmemoryListener()
+		serverStarted := make(chan bool, 1)
+
+		go func() {
+			serverStarted <- true
+			if err := app.Listener(ln); err != nil {
+				t.Errorf("Failed to start listener: %v", err)
+			}
+		}()
+
+		<-serverStarted
+
+		// Execute normal request
+		conn, err := ln.Dial()
+		require.NoError(t, err)
+		_, err = conn.Write([]byte("GET / HTTP/1.1\r\nHost: example.com\r\n\r\n"))
+		require.NoError(t, err)
+
+		// Shutdown with sufficient timeout
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+
+		err = app.ShutdownWithContext(ctx)
+		require.NoError(t, err, "Expected successful shutdown")
 	})
 
-	ln := fasthttputil.NewInmemoryListener()
+	t.Run("shutdown with hooks", func(t *testing.T) {
+		t.Parallel()
+		app := New()
 
-	go func() {
-		err := app.Listener(ln)
-		assert.NoError(t, err)
-	}()
+		hookOrder := make([]string, 0)
+		var hookMutex sync.Mutex
 
-	time.Sleep(1 * time.Second)
+		app.Hooks().OnPreShutdown(func() error {
+			hookMutex.Lock()
+			hookOrder = append(hookOrder, "pre")
+			hookMutex.Unlock()
+			return nil
+		})
 
-	go func() {
-		conn, err := ln.Dial()
-		assert.NoError(t, err)
+		app.Hooks().OnPostShutdown(func(_ error) error {
+			hookMutex.Lock()
+			hookOrder = append(hookOrder, "post")
+			hookMutex.Unlock()
+			return nil
+		})
 
-		_, err = conn.Write([]byte("GET / HTTP/1.1\r\nHost: google.com\r\n\r\n"))
-		assert.NoError(t, err)
-	}()
+		ln := fasthttputil.NewInmemoryListener()
+		go func() {
+			if err := app.Listener(ln); err != nil {
+				t.Errorf("Failed to start listener: %v", err)
+			}
+		}()
 
-	time.Sleep(1 * time.Second)
+		time.Sleep(100 * time.Millisecond)
 
-	shutdownErr := make(chan error)
-	go func() {
-		ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
-		defer cancel()
-		shutdownErr <- app.ShutdownWithContext(ctx)
-	}()
+		err := app.ShutdownWithContext(context.Background())
+		require.NoError(t, err)
 
-	select {
-	case <-time.After(5 * time.Second):
-		t.Fatal("idle connections not closed on shutdown")
-	case err := <-shutdownErr:
-		if err == nil || !errors.Is(err, context.DeadlineExceeded) {
-			t.Fatalf("unexpected err %v. Expecting %v", err, context.DeadlineExceeded)
+		require.Equal(t, []string{"pre", "post"}, hookOrder, "Hooks should execute in order")
+	})
+
+	t.Run("timeout with long running request", func(t *testing.T) {
+		t.Parallel()
+		app := New()
+
+		requestStarted := make(chan struct{})
+		requestProcessing := make(chan struct{})
+
+		app.Get("/", func(c Ctx) error {
+			close(requestStarted)
+			// Wait for signal to continue processing the request
+			<-requestProcessing
+			time.Sleep(2 * time.Second)
+			return c.SendString("OK")
+		})
+
+		ln := fasthttputil.NewInmemoryListener()
+		go func() {
+			if err := app.Listener(ln); err != nil {
+				t.Errorf("Failed to start listener: %v", err)
+			}
+		}()
+
+		// Ensure server is fully started
+		time.Sleep(100 * time.Millisecond)
+
+		// Start a long-running request
+		go func() {
+			conn, err := ln.Dial()
+			if err != nil {
+				t.Errorf("Failed to dial: %v", err)
+				return
+			}
+			if _, err := conn.Write([]byte("GET / HTTP/1.1\r\nHost: example.com\r\n\r\n")); err != nil {
+				t.Errorf("Failed to write: %v", err)
+			}
+		}()
+
+		// Wait for request to start
+		select {
+		case <-requestStarted:
+			// Request has started, signal to continue processing
+			close(requestProcessing)
+		case <-time.After(2 * time.Second):
+			t.Fatal("Request did not start in time")
 		}
-	}
+
+		// Attempt shutdown, should timeout
+		ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
+		defer cancel()
+
+		err := app.ShutdownWithContext(ctx)
+		require.ErrorIs(t, err, context.DeadlineExceeded)
+	})
 }
 
 // go test -run Test_App_Mixed_Routes_WithSameLen
@@ -1055,12 +1145,10 @@ func Test_App_Mixed_Routes_WithSameLen(t *testing.T) {
 
 func Test_App_Group_Invalid(t *testing.T) {
 	t.Parallel()
-	defer func() {
-		if err := recover(); err != nil {
-			require.Equal(t, "use: invalid handler int\n", fmt.Sprintf("%v", err))
-		}
-	}()
-	New().Group("/").Use(1)
+
+	require.PanicsWithValue(t, "use: invalid handler int\n", func() {
+		New().Group("/").Use(1)
+	})
 }
 
 func Test_App_Group(t *testing.T) {
@@ -1285,14 +1373,10 @@ func Test_App_Init_Error_View(t *testing.T) {
 	t.Parallel()
 	app := New(Config{Views: invalidView{}})
 
-	defer func() {
-		if err := recover(); err != nil {
-			require.Equal(t, "implement me", fmt.Sprintf("%v", err))
-		}
-	}()
-
-	err := app.config.Views.Render(nil, "", nil)
-	require.NoError(t, err)
+	require.PanicsWithValue(t, "implement me", func() {
+		//nolint:errcheck // not needed
+		_ = app.config.Views.Render(nil, "", nil)
+	})
 }
 
 // go test -run Test_App_Stack
@@ -1806,6 +1890,16 @@ func Test_Route_Naming_Issue_2671_2685(t *testing.T) {
 	require.Equal(t, "/simple-route", sRoute2.Path)
 }
 
+func Test_App_State(t *testing.T) {
+	t.Parallel()
+	app := New()
+
+	app.State().Set("key", "value")
+	str, ok := app.State().GetString("key")
+	require.True(t, ok)
+	require.Equal(t, "value", str)
+}
+
 // go test -v -run=^$ -bench=Benchmark_Communication_Flow -benchmem -count=4
 func Benchmark_Communication_Flow(b *testing.B) {
 	app := New()

bind_test.go

@@ -1378,7 +1378,7 @@ func Benchmark_Bind_URI(b *testing.B) {
 	var err error
 
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.route = &Route{
 		Params: []string{
@@ -1415,7 +1415,7 @@ func Benchmark_Bind_URI_Map(b *testing.B) {
 	var err error
 
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.route = &Route{
 		Params: []string{

binder/README.md

@@ -28,7 +28,7 @@ Fiber provides several default binders out of the box:
 
 ### Binding into a Struct
 
-Fiber supports binding request data directly into a struct using [gorilla/schema](https://github.com/gorilla/schema). Here's an example:
+Fiber supports binding request data directly into a struct using [gofiber/schema](https://github.com/gofiber/schema). Here's an example:
 
 ```go
 // Field names must start with an uppercase letter

binder/form.go

@@ -1,6 +1,8 @@
 package binder
 
 import (
+	"mime/multipart"
+
 	"github.com/gofiber/utils/v2"
 	"github.com/valyala/fasthttp"
 )
@@ -59,7 +61,15 @@ func (b *FormBinding) bindMultipart(req *fasthttp.Request, out any) error {
 		}
 	}
 
-	return parse(b.Name(), out, data)
+	files := make(map[string][]*multipart.FileHeader)
+	for key, values := range multipartForm.File {
+		err = formatBindData(out, files, key, values, b.EnableSplitting, true)
+		if err != nil {
+			return err
+		}
+	}
+
+	return parse(b.Name(), out, data, files)
 }
 
 // Reset resets the FormBinding binder.

binder/form_test.go

@@ -2,6 +2,7 @@ package binder
 
 import (
 	"bytes"
+	"io"
 	"mime/multipart"
 	"testing"
 
@@ -57,19 +58,19 @@ func Benchmark_FormBinder_Bind(b *testing.B) {
 	b.ReportAllocs()
 	b.ResetTimer()
 
-	binder := &QueryBinding{
+	binder := &FormBinding{
 		EnableSplitting: true,
 	}
 
 	type User struct {
-		Name  string   `query:"name"`
-		Posts []string `query:"posts"`
-		Age   int      `query:"age"`
+		Name  string   `form:"name"`
+		Posts []string `form:"posts"`
+		Age   int      `form:"age"`
 	}
 	var user User
 
 	req := fasthttp.AcquireRequest()
-	req.URI().SetQueryString("name=john&age=42&posts=post1,post2,post3")
+	req.SetBodyString("name=john&age=42&posts=post1,post2,post3")
 	req.Header.SetContentType("application/x-www-form-urlencoded")
 
 	b.ResetTimer()
@@ -98,10 +99,12 @@ func Test_FormBinder_BindMultipart(t *testing.T) {
 	}
 
 	type User struct {
-		Name  string   `form:"name"`
-		Names []string `form:"names"`
-		Posts []Post   `form:"posts"`
-		Age   int      `form:"age"`
+		Avatar  *multipart.FileHeader   `form:"avatar"`
+		Name    string                  `form:"name"`
+		Names   []string                `form:"names"`
+		Posts   []Post                  `form:"posts"`
+		Avatars []*multipart.FileHeader `form:"avatars"`
+		Age     int                     `form:"age"`
 	}
 	var user User
 
@@ -118,6 +121,24 @@ func Test_FormBinder_BindMultipart(t *testing.T) {
 	require.NoError(t, mw.WriteField("posts[1][title]", "post2"))
 	require.NoError(t, mw.WriteField("posts[2][title]", "post3"))
 
+	writer, err := mw.CreateFormFile("avatar", "avatar.txt")
+	require.NoError(t, err)
+
+	_, err = writer.Write([]byte("avatar"))
+	require.NoError(t, err)
+
+	writer, err = mw.CreateFormFile("avatars", "avatar1.txt")
+	require.NoError(t, err)
+
+	_, err = writer.Write([]byte("avatar1"))
+	require.NoError(t, err)
+
+	writer, err = mw.CreateFormFile("avatars", "avatar2.txt")
+	require.NoError(t, err)
+
+	_, err = writer.Write([]byte("avatar2"))
+	require.NoError(t, err)
+
 	require.NoError(t, mw.Close())
 
 	req.Header.SetContentType(mw.FormDataContentType())
@@ -127,7 +148,7 @@ func Test_FormBinder_BindMultipart(t *testing.T) {
 		fasthttp.ReleaseRequest(req)
 	})
 
-	err := b.Bind(req, &user)
+	err = b.Bind(req, &user)
 
 	require.NoError(t, err)
 	require.Equal(t, "john", user.Name)
@@ -139,6 +160,38 @@ func Test_FormBinder_BindMultipart(t *testing.T) {
 	require.Equal(t, "post1", user.Posts[0].Title)
 	require.Equal(t, "post2", user.Posts[1].Title)
 	require.Equal(t, "post3", user.Posts[2].Title)
+
+	require.NotNil(t, user.Avatar)
+	require.Equal(t, "avatar.txt", user.Avatar.Filename)
+	require.Equal(t, "application/octet-stream", user.Avatar.Header.Get("Content-Type"))
+
+	file, err := user.Avatar.Open()
+	require.NoError(t, err)
+
+	content, err := io.ReadAll(file)
+	require.NoError(t, err)
+	require.Equal(t, "avatar", string(content))
+
+	require.Len(t, user.Avatars, 2)
+	require.Equal(t, "avatar1.txt", user.Avatars[0].Filename)
+	require.Equal(t, "application/octet-stream", user.Avatars[0].Header.Get("Content-Type"))
+
+	file, err = user.Avatars[0].Open()
+	require.NoError(t, err)
+
+	content, err = io.ReadAll(file)
+	require.NoError(t, err)
+	require.Equal(t, "avatar1", string(content))
+
+	require.Equal(t, "avatar2.txt", user.Avatars[1].Filename)
+	require.Equal(t, "application/octet-stream", user.Avatars[1].Header.Get("Content-Type"))
+
+	file, err = user.Avatars[1].Open()
+	require.NoError(t, err)
+
+	content, err = io.ReadAll(file)
+	require.NoError(t, err)
+	require.Equal(t, "avatar2", string(content))
 }
 
 func Benchmark_FormBinder_BindMultipart(b *testing.B) {

binder/mapping.go

@@ -3,6 +3,7 @@ package binder
 import (
 	"errors"
 	"fmt"
+	"mime/multipart"
 	"reflect"
 	"strings"
 	"sync"
@@ -69,7 +70,7 @@ func init() {
 }
 
 // parse data into the map or struct
-func parse(aliasTag string, out any, data map[string][]string) error {
+func parse(aliasTag string, out any, data map[string][]string, files ...map[string][]*multipart.FileHeader) error {
 	ptrVal := reflect.ValueOf(out)
 
 	// Get pointer value
@@ -83,11 +84,11 @@ func parse(aliasTag string, out any, data map[string][]string) error {
 	}
 
 	// Parse into the struct
-	return parseToStruct(aliasTag, out, data)
+	return parseToStruct(aliasTag, out, data, files...)
 }
 
-// Parse data into the struct with gorilla/schema
-func parseToStruct(aliasTag string, out any, data map[string][]string) error {
+// Parse data into the struct with gofiber/schema
+func parseToStruct(aliasTag string, out any, data map[string][]string, files ...map[string][]*multipart.FileHeader) error {
 	// Get decoder from pool
 	schemaDecoder := decoderPoolMap[aliasTag].Get().(*schema.Decoder) //nolint:errcheck,forcetypeassert // not needed
 	defer decoderPoolMap[aliasTag].Put(schemaDecoder)
@@ -95,7 +96,7 @@ func parseToStruct(aliasTag string, out any, data map[string][]string) error {
 	// Set alias tag
 	schemaDecoder.SetAliasTag(aliasTag)
 
-	if err := schemaDecoder.Decode(out, data); err != nil {
+	if err := schemaDecoder.Decode(out, data, files...); err != nil {
 		return fmt.Errorf("bind: %w", err)
 	}
 
@@ -250,7 +251,7 @@ func FilterFlags(content string) string {
 	return content
 }
 
-func formatBindData[T any](out any, data map[string][]string, key string, value T, enableSplitting, supportBracketNotation bool) error { //nolint:revive // it's okay
+func formatBindData[T, K any](out any, data map[string][]T, key string, value K, enableSplitting, supportBracketNotation bool) error { //nolint:revive // it's okay
 	var err error
 	if supportBracketNotation && strings.Contains(key, "[") {
 		key, err = parseParamSquareBrackets(key)
@@ -261,10 +262,28 @@ func formatBindData[T any](out any, data map[string][]string, key string, value
 
 	switch v := any(value).(type) {
 	case string:
-		assignBindData(out, data, key, v, enableSplitting)
+		dataMap, ok := any(data).(map[string][]string)
+		if !ok {
+			return fmt.Errorf("unsupported value type: %T", value)
+		}
+
+		assignBindData(out, dataMap, key, v, enableSplitting)
 	case []string:
+		dataMap, ok := any(data).(map[string][]string)
+		if !ok {
+			return fmt.Errorf("unsupported value type: %T", value)
+		}
+
 		for _, val := range v {
-			assignBindData(out, data, key, val, enableSplitting)
+			assignBindData(out, dataMap, key, val, enableSplitting)
+		}
+	case []*multipart.FileHeader:
+		for _, val := range v {
+			valT, ok := any(val).(T)
+			if !ok {
+				return fmt.Errorf("unsupported value type: %T", value)
+			}
+			data[key] = append(data[key], valT)
 		}
 	default:
 		return fmt.Errorf("unsupported value type: %T", value)

binder/mapping_test.go

@@ -2,6 +2,7 @@ package binder
 
 import (
 	"errors"
+	"mime/multipart"
 	"reflect"
 	"testing"
 
@@ -9,6 +10,8 @@ import (
 )
 
 func Test_EqualFieldType(t *testing.T) {
+	t.Parallel()
+
 	var out int
 	require.False(t, equalFieldType(&out, reflect.Int, "key"))
 
@@ -47,6 +50,8 @@ func Test_EqualFieldType(t *testing.T) {
 }
 
 func Test_ParseParamSquareBrackets(t *testing.T) {
+	t.Parallel()
+
 	tests := []struct {
 		err      error
 		input    string
@@ -101,6 +106,8 @@ func Test_ParseParamSquareBrackets(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.input, func(t *testing.T) {
+			t.Parallel()
+
 			result, err := parseParamSquareBrackets(tt.input)
 			if tt.err != nil {
 				require.Error(t, err)
@@ -114,6 +121,8 @@ func Test_ParseParamSquareBrackets(t *testing.T) {
 }
 
 func Test_parseToMap(t *testing.T) {
+	t.Parallel()
+
 	inputMap := map[string][]string{
 		"key1": {"value1", "value2"},
 		"key2": {"value3"},
@@ -147,6 +156,8 @@ func Test_parseToMap(t *testing.T) {
 }
 
 func Test_FilterFlags(t *testing.T) {
+	t.Parallel()
+
 	tests := []struct {
 		input    string
 		expected string
@@ -172,8 +183,163 @@ func Test_FilterFlags(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.input, func(t *testing.T) {
+			t.Parallel()
+
 			result := FilterFlags(tt.input)
 			require.Equal(t, tt.expected, result)
 		})
 	}
 }
+
+func TestFormatBindData(t *testing.T) {
+	t.Parallel()
+
+	t.Run("string value with valid key", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "name", "John", false, false)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if len(data["name"]) != 1 || data["name"][0] != "John" {
+			t.Fatalf("expected data[\"name\"] = [John], got %v", data["name"])
+		}
+	})
+
+	t.Run("unsupported value type", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "age", 30, false, false) // int is unsupported
+		if err == nil {
+			t.Fatal("expected an error, got nil")
+		}
+	})
+
+	t.Run("bracket notation parsing error", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "invalid[", "value", false, true) // malformed bracket notation
+		if err == nil {
+			t.Fatal("expected an error, got nil")
+		}
+	})
+
+	t.Run("handling multipart file headers", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]*multipart.FileHeader)
+		files := []*multipart.FileHeader{
+			{Filename: "file1.txt"},
+			{Filename: "file2.txt"},
+		}
+		err := formatBindData(out, data, "files", files, false, false)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if len(data["files"]) != 2 {
+			t.Fatalf("expected 2 files, got %d", len(data["files"]))
+		}
+	})
+
+	t.Run("type casting error", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := map[string][]int{} // Incorrect type to force a casting error
+		err := formatBindData(out, data, "key", "value", false, false)
+		require.Equal(t, "unsupported value type: string", err.Error())
+	})
+}
+
+func TestAssignBindData(t *testing.T) {
+	t.Parallel()
+
+	t.Run("splitting enabled with comma", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct {
+			Colors []string `query:"colors"`
+		}{}
+		data := make(map[string][]string)
+		assignBindData(&out, data, "colors", "red,blue,green", true)
+		require.Len(t, data["colors"], 3)
+	})
+
+	t.Run("splitting disabled", func(t *testing.T) {
+		t.Parallel()
+
+		var out []string
+		data := make(map[string][]string)
+		assignBindData(out, data, "color", "red,blue", false)
+		require.Len(t, data["color"], 1)
+	})
+}
+
+func Test_parseToStruct_MismatchedData(t *testing.T) {
+	t.Parallel()
+
+	type User struct {
+		Name string `query:"name"`
+		Age  int    `query:"age"`
+	}
+
+	data := map[string][]string{
+		"name": {"John"},
+		"age":  {"invalidAge"},
+	}
+
+	err := parseToStruct("query", &User{}, data)
+	require.Error(t, err)
+	require.EqualError(t, err, "bind: schema: error converting value for \"age\"")
+}
+
+func Test_formatBindData_ErrorCases(t *testing.T) {
+	t.Parallel()
+
+	t.Run("unsupported value type int", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "age", 30, false, false) // int is unsupported
+		require.Error(t, err)
+		require.EqualError(t, err, "unsupported value type: int")
+	})
+
+	t.Run("unsupported value type map", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "map", map[string]string{"key": "value"}, false, false) // map is unsupported
+		require.Error(t, err)
+		require.EqualError(t, err, "unsupported value type: map[string]string")
+	})
+
+	t.Run("bracket notation parsing error", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "invalid[", "value", false, true) // malformed bracket notation
+		require.Error(t, err)
+		require.EqualError(t, err, "unmatched brackets")
+	})
+
+	t.Run("type casting error for []string", func(t *testing.T) {
+		t.Parallel()
+
+		out := struct{}{}
+		data := make(map[string][]string)
+		err := formatBindData(out, data, "names", 123, false, false) // invalid type for []string
+		require.Error(t, err)
+		require.EqualError(t, err, "unsupported value type: int")
+	})
+}

client/helper_test.go

@@ -131,7 +131,7 @@ func testRequestFail(t *testing.T, handler fiber.Handler, wrapAgent func(agent *
 	}
 }
 
-func testClient(t *testing.T, handler fiber.Handler, wrapAgent func(agent *Client), excepted string, count ...int) { //nolint: unparam // maybe needed
+func testClient(t *testing.T, handler fiber.Handler, wrapAgent func(agent *Client), excepted string, count ...int) { //nolint:unparam // maybe needed
 	t.Helper()
 
 	app, ln, start := createHelperServer(t)

client/hooks.go

@@ -3,24 +3,22 @@ package client
 import (
 	"fmt"
 	"io"
-	"math/rand"
+	"math/rand/v2"
 	"mime/multipart"
 	"os"
 	"path/filepath"
 	"regexp"
 	"strconv"
 	"strings"
-	"time"
 
 	"github.com/gofiber/utils/v2"
 	"github.com/valyala/fasthttp"
 )
 
-var (
-	protocolCheck = regexp.MustCompile(`^https?://.*$`)
-
-	headerAccept = "Accept"
+var protocolCheck = regexp.MustCompile(`^https?://.*$`)
 
+const (
+	headerAccept      = "Accept"
 	applicationJSON   = "application/json"
 	applicationCBOR   = "application/cbor"
 	applicationXML    = "application/xml"
@@ -30,25 +28,26 @@ var (
 	letterBytes   = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
 	letterIdxBits = 6                    // 6 bits to represent a letter index
 	letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
-	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting into 63 bits
+	letterIdxMax  = 64 / letterIdxBits   // # of letter indices fitting into 64 bits
 )
 
-// randString returns a random string of length n.
-func randString(n int) string {
+// unsafeRandString returns a random string of length n.
+func unsafeRandString(n int) string {
 	b := make([]byte, n)
-	length := len(letterBytes)
-	src := rand.NewSource(time.Now().UnixNano())
+	const length = uint64(len(letterBytes))
 
-	for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
+	//nolint:gosec // Not a concern
+	for i, cache, remain := n-1, rand.Uint64(), letterIdxMax; i >= 0; {
 		if remain == 0 {
-			cache, remain = src.Int63(), letterIdxMax
+			//nolint:gosec // Not a concern
+			cache, remain = rand.Uint64(), letterIdxMax
 		}
 
-		if idx := int(cache & int64(letterIdxMask)); idx < length {
+		if idx := cache & letterIdxMask; idx < length {
 			b[i] = letterBytes[idx]
 			i--
 		}
-		cache >>= int64(letterIdxBits)
+		cache >>= letterIdxBits
 		remain--
 	}
 
@@ -134,7 +133,7 @@ func parserRequestHeader(c *Client, req *Request) error {
 		req.RawRequest.Header.SetContentType(multipartFormData)
 		// If boundary is default, append a random string to it.
 		if req.boundary == boundary {
-			req.boundary += randString(16)
+			req.boundary += unsafeRandString(16)
 		}
 		req.RawRequest.Header.SetMultipartFormBoundary(req.boundary)
 	default:
@@ -200,7 +199,7 @@ func parserRequestBody(c *Client, req *Request) error {
 	case filesBody:
 		return parserRequestBodyFile(req)
 	case rawBody:
-		if body, ok := req.body.([]byte); ok {
+		if body, ok := req.body.([]byte); ok { //nolint:revive // ignore simplicity
 			req.RawRequest.SetBody(body)
 		} else {
 			return ErrBodyType

client/hooks_test.go

@@ -38,7 +38,7 @@ func Test_Rand_String(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			t.Parallel()
-			got := randString(tt.args)
+			got := unsafeRandString(tt.args)
 			require.Len(t, got, tt.args)
 		})
 	}

client/request.go

@@ -298,11 +298,12 @@ func (r *Request) Cookie(key string) string {
 // Use maps.Collect() to gather them into a map if needed.
 func (r *Request) Cookies() iter.Seq2[string, string] {
 	return func(yield func(string, string) bool) {
-		r.cookies.VisitAll(func(key, val string) {
-			if !yield(key, val) {
+		for k, v := range *r.cookies {
+			res := yield(k, v)
+			if !res {
 				return
 			}
-		})
+		}
 	}
 }
 
@@ -343,11 +344,11 @@ func (r *Request) PathParam(key string) string {
 // Use maps.Collect() to gather them into a map if needed.
 func (r *Request) PathParams() iter.Seq2[string, string] {
 	return func(yield func(string, string) bool) {
-		r.path.VisitAll(func(key, val string) {
-			if !yield(key, val) {
+		for k, v := range *r.path {
+			if !yield(k, v) {
 				return
 			}
-		})
+		}
 	}
 }
 

client/request_test.go

@@ -1,3 +1,4 @@
+//nolint:goconst // Much easier to just ignore memory leaks in tests
 package client
 
 import (
@@ -451,6 +452,14 @@ func Test_Request_Cookies(t *testing.T) {
 	require.Equal(t, "bar", cookies["foo"])
 	require.Equal(t, "foo", cookies["bar"])
 
+	require.NotPanics(t, func() {
+		for _, v := range req.Cookies() {
+			if v == "bar" {
+				break
+			}
+		}
+	})
+
 	require.Len(t, cookies, 2)
 }
 
@@ -564,6 +573,14 @@ func Test_Request_PathParams(t *testing.T) {
 	require.Equal(t, "foo", pathParams["bar"])
 
 	require.Len(t, pathParams, 2)
+
+	require.NotPanics(t, func() {
+		for _, v := range req.PathParams() {
+			if v == "bar" {
+				break
+			}
+		}
+	})
 }
 
 func Benchmark_Request_PathParams(b *testing.B) {
@@ -1579,7 +1596,7 @@ func Test_SetValWithStruct(t *testing.T) {
 
 		require.True(t, func() bool {
 			for _, v := range p.PeekMulti("TSlice") {
-				if string(v) == "bar" { //nolint:goconst // test
+				if string(v) == "bar" {
 					return true
 				}
 			}

ctx.go

@@ -33,8 +33,11 @@ const (
 	schemeHTTPS = "https"
 )
 
-// maxParams defines the maximum number of parameters per route.
-const maxParams = 30
+const (
+	// maxParams defines the maximum number of parameters per route.
+	maxParams         = 30
+	maxDetectionPaths = 3
+)
 
 // The contextKey type is unexported to prevent collisions with context keys defined in
 // other packages.
@@ -49,26 +52,25 @@ const userContextKey contextKey = 0 // __local_user_context__
 //
 //go:generate ifacemaker --file ctx.go --struct DefaultCtx --iface Ctx --pkg fiber --output ctx_interface_gen.go --not-exported true --iface-comment "Ctx represents the Context which hold the HTTP request and response.\nIt has methods for the request query string, parameters, body, HTTP headers and so on."
 type DefaultCtx struct {
-	app                 *App                 // Reference to *App
-	route               *Route               // Reference to *Route
-	fasthttp            *fasthttp.RequestCtx // Reference to *fasthttp.RequestCtx
-	bind                *Bind                // Default bind reference
-	redirect            *Redirect            // Default redirect reference
-	values              [maxParams]string    // Route parameter values
-	viewBindMap         sync.Map             // Default view map to bind template engine
-	method              string               // HTTP method
-	baseURI             string               // HTTP base uri
-	path                string               // HTTP path with the modifications by the configuration -> string copy from pathBuffer
-	detectionPath       string               // Route detection path                                  -> string copy from detectionPathBuffer
-	treePath            string               // Path for the search in the tree
-	pathOriginal        string               // Original HTTP path
-	pathBuffer          []byte               // HTTP path buffer
-	detectionPathBuffer []byte               // HTTP detectionPath buffer
-	flashMessages       redirectionMsgs      // Flash messages
-	indexRoute          int                  // Index of the current route
-	indexHandler        int                  // Index of the current handler
-	methodINT           int                  // HTTP method INT equivalent
-	matched             bool                 // Non use route matched
+	app           *App                 // Reference to *App
+	route         *Route               // Reference to *Route
+	fasthttp      *fasthttp.RequestCtx // Reference to *fasthttp.RequestCtx
+	bind          *Bind                // Default bind reference
+	redirect      *Redirect            // Default redirect reference
+	req           *DefaultReq          // Default request api reference
+	res           *DefaultRes          // Default response api reference
+	values        [maxParams]string    // Route parameter values
+	viewBindMap   sync.Map             // Default view map to bind template engine
+	baseURI       string               // HTTP base uri
+	pathOriginal  string               // Original HTTP path
+	flashMessages redirectionMsgs      // Flash messages
+	path          []byte               // HTTP path with the modifications by the configuration
+	detectionPath []byte               // Route detection path
+	treePathHash  int                  // Hash of the path for the search in the tree
+	indexRoute    int                  // Index of the current route
+	indexHandler  int                  // Index of the current handler
+	methodInt     int                  // HTTP method INT equivalent
+	matched       bool                 // Non use route matched
 }
 
 // SendFile defines configuration options when to transfer file with SendFile.
@@ -1003,19 +1005,17 @@ func (c *DefaultCtx) Location(path string) {
 func (c *DefaultCtx) Method(override ...string) string {
 	if len(override) == 0 {
 		// Nothing to override, just return current method from context
-		return c.method
+		return c.app.method(c.methodInt)
 	}
 
 	method := utils.ToUpper(override[0])
-	mINT := c.app.methodInt(method)
-	if mINT == -1 {
+	methodInt := c.app.methodInt(method)
+	if methodInt == -1 {
 		// Provided override does not valid HTTP method, no override, return current method
-		return c.method
+		return c.app.method(c.methodInt)
 	}
-
-	c.method = method
-	c.methodINT = mINT
-	return c.method
+	c.methodInt = methodInt
+	return method
 }
 
 // MultipartForm parse form entries from binary.
@@ -1121,8 +1121,9 @@ func Params[V GenericType](c Ctx, key string, defaultValue ...V) V {
 
 // Path returns the path part of the request URL.
 // Optionally, you could override the path.
+// Make copies or use the Immutable setting to use the value outside the Handler.
 func (c *DefaultCtx) Path(override ...string) string {
-	if len(override) != 0 && c.path != override[0] {
+	if len(override) != 0 && string(c.path) != override[0] {
 		// Set new path to context
 		c.pathOriginal = override[0]
 
@@ -1131,7 +1132,7 @@ func (c *DefaultCtx) Path(override ...string) string {
 		// Prettify path
 		c.configDependentPaths()
 	}
-	return c.path
+	return c.app.getString(c.path)
 }
 
 // Scheme contains the request protocol string: http or https for TLS requests.
@@ -1347,7 +1348,7 @@ func (c *DefaultCtx) getLocationFromRoute(route Route, params Map) (string, erro
 
 		for key, val := range params {
 			isSame := key == segment.ParamName || (!c.app.config.CaseSensitive && utils.EqualFold(key, segment.ParamName))
-			isGreedy := segment.IsGreedy && len(key) == 1 && isInCharset(key[0], greedyParameters)
+			isGreedy := segment.IsGreedy && len(key) == 1 && bytes.IndexByte(greedyParameters, key[0]) != -1
 			if isSame || isGreedy {
 				_, err := buf.WriteString(utils.ToString(val))
 				if err != nil {
@@ -1463,6 +1464,18 @@ func (c *DefaultCtx) renderExtensions(bind any) {
 	}
 }
 
+// Req returns a convenience type whose API is limited to operations
+// on the incoming request.
+func (c *DefaultCtx) Req() Req {
+	return c.req
+}
+
+// Res returns a convenience type whose API is limited to operations
+// on the outgoing response.
+func (c *DefaultCtx) Res() Res {
+	return c.res
+}
+
 // Route returns the matched Route struct.
 func (c *DefaultCtx) Route() *Route {
 	if c.route == nil {
@@ -1470,7 +1483,7 @@ func (c *DefaultCtx) Route() *Route {
 		return &Route{
 			path:     c.pathOriginal,
 			Path:     c.pathOriginal,
-			Method:   c.method,
+			Method:   c.Method(),
 			Handlers: make([]Handler, 0),
 			Params:   make([]string, 0),
 		}
@@ -1555,6 +1568,7 @@ func (c *DefaultCtx) SendFile(file string, config ...SendFile) error {
 			AcceptByteRange:        cfg.ByteRange,
 			Compress:               cfg.Compress,
 			CompressBrotli:         cfg.Compress,
+			CompressZstd:           cfg.Compress,
 			CompressedFileSuffixes: c.app.config.CompressedFileSuffixes,
 			CacheDuration:          cfg.CacheDuration,
 			SkipCache:              cfg.CacheDuration < 0,
@@ -1817,32 +1831,31 @@ func (c *DefaultCtx) XHR() bool {
 // configDependentPaths set paths for route recognition and prepared paths for the user,
 // here the features for caseSensitive, decoded paths, strict paths are evaluated
 func (c *DefaultCtx) configDependentPaths() {
-	c.pathBuffer = append(c.pathBuffer[0:0], c.pathOriginal...)
+	c.path = append(c.path[:0], c.pathOriginal...)
 	// If UnescapePath enabled, we decode the path and save it for the framework user
 	if c.app.config.UnescapePath {
-		c.pathBuffer = fasthttp.AppendUnquotedArg(c.pathBuffer[:0], c.pathBuffer)
+		c.path = fasthttp.AppendUnquotedArg(c.path[:0], c.path)
 	}
-	c.path = c.app.getString(c.pathBuffer)
 
 	// another path is specified which is for routing recognition only
 	// use the path that was changed by the previous configuration flags
-	c.detectionPathBuffer = append(c.detectionPathBuffer[0:0], c.pathBuffer...)
+	c.detectionPath = append(c.detectionPath[:0], c.path...)
 	// If CaseSensitive is disabled, we lowercase the original path
 	if !c.app.config.CaseSensitive {
-		c.detectionPathBuffer = utils.ToLowerBytes(c.detectionPathBuffer)
+		c.detectionPath = utils.ToLowerBytes(c.detectionPath)
 	}
 	// If StrictRouting is disabled, we strip all trailing slashes
-	if !c.app.config.StrictRouting && len(c.detectionPathBuffer) > 1 && c.detectionPathBuffer[len(c.detectionPathBuffer)-1] == '/' {
-		c.detectionPathBuffer = utils.TrimRight(c.detectionPathBuffer, '/')
+	if !c.app.config.StrictRouting && len(c.detectionPath) > 1 && c.detectionPath[len(c.detectionPath)-1] == '/' {
+		c.detectionPath = utils.TrimRight(c.detectionPath, '/')
 	}
-	c.detectionPath = c.app.getString(c.detectionPathBuffer)
 
 	// Define the path for dividing routes into areas for fast tree detection, so that fewer routes need to be traversed,
 	// since the first three characters area select a list of routes
-	c.treePath = c.treePath[0:0]
-	const maxDetectionPaths = 3
+	c.treePathHash = 0
 	if len(c.detectionPath) >= maxDetectionPaths {
-		c.treePath = c.detectionPath[:maxDetectionPaths]
+		c.treePathHash = int(c.detectionPath[0])<<16 |
+			int(c.detectionPath[1])<<8 |
+			int(c.detectionPath[2])
 	}
 }
 
@@ -1903,8 +1916,7 @@ func (c *DefaultCtx) Reset(fctx *fasthttp.RequestCtx) {
 	// Set paths
 	c.pathOriginal = c.app.getString(fctx.URI().PathOriginal())
 	// Set method
-	c.method = c.app.getString(fctx.Request.Header.Method())
-	c.methodINT = c.app.methodInt(c.method)
+	c.methodInt = c.app.methodInt(utils.UnsafeString(fctx.Request.Header.Method()))
 	// Attach *fasthttp.RequestCtx to ctx
 	c.fasthttp = fctx
 	// reset base uri
@@ -1935,20 +1947,20 @@ func (c *DefaultCtx) getBody() []byte {
 }
 
 // Methods to use with next stack.
-func (c *DefaultCtx) getMethodINT() int {
-	return c.methodINT
+func (c *DefaultCtx) getMethodInt() int {
+	return c.methodInt
 }
 
 func (c *DefaultCtx) getIndexRoute() int {
 	return c.indexRoute
 }
 
-func (c *DefaultCtx) getTreePath() string {
-	return c.treePath
+func (c *DefaultCtx) getTreePathHash() int {
+	return c.treePathHash
 }
 
 func (c *DefaultCtx) getDetectionPath() string {
-	return c.detectionPath
+	return c.app.getString(c.detectionPath)
 }
 
 func (c *DefaultCtx) getPathOriginal() string {

ctx_interface.go

@@ -17,9 +17,9 @@ type CustomCtx interface {
 	Reset(fctx *fasthttp.RequestCtx)
 
 	// Methods to use with next stack.
-	getMethodINT() int
+	getMethodInt() int
 	getIndexRoute() int
-	getTreePath() string
+	getTreePathHash() int
 	getDetectionPath() string
 	getPathOriginal() string
 	getValues() *[maxParams]string
@@ -32,10 +32,14 @@ type CustomCtx interface {
 
 func NewDefaultCtx(app *App) *DefaultCtx {
 	// return ctx
-	return &DefaultCtx{
+	ctx := &DefaultCtx{
 		// Set app reference
 		app: app,
 	}
+	ctx.req = &DefaultReq{ctx: ctx}
+	ctx.res = &DefaultRes{ctx: ctx}
+
+	return ctx
 }
 
 func (app *App) newCtx() Ctx {

ctx_interface_gen.go

@@ -265,6 +265,12 @@ type Ctx interface {
 	// We support the following engines: https://github.com/gofiber/template
 	Render(name string, bind any, layouts ...string) error
 	renderExtensions(bind any)
+	// Req returns a convenience type whose API is limited to operations
+	// on the incoming request.
+	Req() Req
+	// Res returns a convenience type whose API is limited to operations
+	// on the outgoing response.
+	Res() Res
 	// Route returns the matched Route struct.
 	Route() *Route
 	// SaveFile saves any multipart file to disk.
@@ -339,9 +345,9 @@ type Ctx interface {
 	release()
 	getBody() []byte
 	// Methods to use with next stack.
-	getMethodINT() int
+	getMethodInt() int
 	getIndexRoute() int
-	getTreePath() string
+	getTreePathHash() int
 	getDetectionPath() string
 	getPathOriginal() string
 	getValues() *[maxParams]string

ctx_test.go

@@ -46,7 +46,7 @@ func Test_Ctx_Accepts(t *testing.T) {
 
 	c.Request().Header.Set(HeaderAccept, "text/html,application/xhtml+xml,application/xml;q=0.9")
 	require.Equal(t, "", c.Accepts(""))
-	require.Equal(t, "", c.Accepts())
+	require.Equal(t, "", c.Req().Accepts())
 	require.Equal(t, ".xml", c.Accepts(".xml"))
 	require.Equal(t, "", c.Accepts(".john"))
 	require.Equal(t, "application/xhtml+xml", c.Accepts("application/xml", "application/xml+rss", "application/yaml", "application/xhtml+xml"), "must use client-preferred mime type")
@@ -57,13 +57,13 @@ func Test_Ctx_Accepts(t *testing.T) {
 	c.Request().Header.Set(HeaderAccept, "text/*, application/json")
 	require.Equal(t, "html", c.Accepts("html"))
 	require.Equal(t, "text/html", c.Accepts("text/html"))
-	require.Equal(t, "json", c.Accepts("json", "text"))
+	require.Equal(t, "json", c.Req().Accepts("json", "text"))
 	require.Equal(t, "application/json", c.Accepts("application/json"))
 	require.Equal(t, "", c.Accepts("image/png"))
 	require.Equal(t, "", c.Accepts("png"))
 
 	c.Request().Header.Set(HeaderAccept, "text/html, application/json")
-	require.Equal(t, "text/*", c.Accepts("text/*"))
+	require.Equal(t, "text/*", c.Req().Accepts("text/*"))
 
 	c.Request().Header.Set(HeaderAccept, "*/*")
 	require.Equal(t, "html", c.Accepts("html"))
@@ -192,7 +192,7 @@ func Test_Ctx_AcceptsCharsets(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_AcceptsCharsets -benchmem -count=4
 func Benchmark_Ctx_AcceptsCharsets(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().Header.Set("Accept-Charset", "utf-8, iso-8859-1;q=0.5")
 	var res string
@@ -218,7 +218,7 @@ func Test_Ctx_AcceptsEncodings(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_AcceptsEncodings -benchmem -count=4
 func Benchmark_Ctx_AcceptsEncodings(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().Header.Set(HeaderAcceptEncoding, "deflate, gzip;q=1.0, *;q=0.5")
 	var res string
@@ -243,7 +243,7 @@ func Test_Ctx_AcceptsLanguages(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_AcceptsLanguages -benchmem -count=4
 func Benchmark_Ctx_AcceptsLanguages(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().Header.Set(HeaderAcceptLanguage, "fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5")
 	var res string
@@ -304,7 +304,7 @@ func Test_Ctx_Append(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_Append -benchmem -count=4
 func Benchmark_Ctx_Append(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -337,7 +337,7 @@ func Test_Ctx_Attachment(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_Attachment -benchmem -count=4
 func Benchmark_Ctx_Attachment(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -363,7 +363,7 @@ func Test_Ctx_BaseURL(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_BaseURL -benchmem
 func Benchmark_Ctx_BaseURL(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetHost("google.com:1337")
 	c.Request().URI().SetPath("/haha/oke/lol")
@@ -380,7 +380,7 @@ func Benchmark_Ctx_BaseURL(b *testing.B) {
 func Test_Ctx_Body(t *testing.T) {
 	t.Parallel()
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBody([]byte("john=doe"))
 	require.Equal(t, []byte("john=doe"), c.Body())
@@ -390,7 +390,7 @@ func Test_Ctx_Body(t *testing.T) {
 func Test_Ctx_BodyRaw(t *testing.T) {
 	t.Parallel()
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBodyRaw([]byte("john=doe"))
 	require.Equal(t, []byte("john=doe"), c.BodyRaw())
@@ -400,7 +400,7 @@ func Test_Ctx_BodyRaw(t *testing.T) {
 func Test_Ctx_BodyRaw_Immutable(t *testing.T) {
 	t.Parallel()
 	app := New(Config{Immutable: true})
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBodyRaw([]byte("john=doe"))
 	require.Equal(t, []byte("john=doe"), c.BodyRaw())
@@ -411,7 +411,7 @@ func Benchmark_Ctx_Body(b *testing.B) {
 	const input = "john=doe"
 
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBody([]byte(input))
 	b.ReportAllocs()
@@ -428,7 +428,7 @@ func Benchmark_Ctx_BodyRaw(b *testing.B) {
 	const input = "john=doe"
 
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBodyRaw([]byte(input))
 	b.ReportAllocs()
@@ -445,7 +445,7 @@ func Benchmark_Ctx_BodyRaw_Immutable(b *testing.B) {
 	const input = "john=doe"
 
 	app := New(Config{Immutable: true})
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBodyRaw([]byte(input))
 	b.ReportAllocs()
@@ -462,7 +462,7 @@ func Test_Ctx_Body_Immutable(t *testing.T) {
 	t.Parallel()
 	app := New()
 	app.config.Immutable = true
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBody([]byte("john=doe"))
 	require.Equal(t, []byte("john=doe"), c.Body())
@@ -474,7 +474,7 @@ func Benchmark_Ctx_Body_Immutable(b *testing.B) {
 
 	app := New()
 	app.config.Immutable = true
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Request().SetBody([]byte(input))
 	b.ReportAllocs()
@@ -527,7 +527,7 @@ func Test_Ctx_Body_With_Compression(t *testing.T) {
 		t.Run(tCase.name, func(t *testing.T) {
 			t.Parallel()
 			app := New()
-			c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+			c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 			c.Request().Header.Set("Content-Encoding", tCase.contentEncoding)
 
 			if strings.Contains(tCase.contentEncoding, "gzip") {
@@ -720,7 +720,7 @@ func Test_Ctx_Body_With_Compression_Immutable(t *testing.T) {
 			t.Parallel()
 			app := New()
 			app.config.Immutable = true
-			c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+			c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 			c.Request().Header.Set("Content-Encoding", tCase.contentEncoding)
 
 			if strings.Contains(tCase.contentEncoding, "gzip") {
@@ -897,7 +897,7 @@ func Test_Ctx_Context(t *testing.T) {
 		t.Parallel()
 		testKey := struct{}{}
 		testValue := "Test Value"
-		ctx := context.WithValue(context.Background(), testKey, testValue) //nolint: staticcheck // not needed for tests
+		ctx := context.WithValue(context.Background(), testKey, testValue) //nolint:staticcheck // not needed for tests
 		require.Equal(t, testValue, ctx.Value(testKey))
 	})
 }
@@ -910,7 +910,7 @@ func Test_Ctx_SetContext(t *testing.T) {
 
 	testKey := struct{}{}
 	testValue := "Test Value"
-	ctx := context.WithValue(context.Background(), testKey, testValue) //nolint: staticcheck // not needed for tests
+	ctx := context.WithValue(context.Background(), testKey, testValue) //nolint:staticcheck // not needed for tests
 	c.SetContext(ctx)
 	require.Equal(t, testValue, c.Context().Value(testKey))
 }
@@ -930,7 +930,7 @@ func Test_Ctx_Context_Multiple_Requests(t *testing.T) {
 		}
 
 		input := utils.CopyString(Query(c, "input", "NO_VALUE"))
-		ctx = context.WithValue(ctx, testKey, fmt.Sprintf("%s_%s", testValue, input)) //nolint: staticcheck // not needed for tests
+		ctx = context.WithValue(ctx, testKey, fmt.Sprintf("%s_%s", testValue, input)) //nolint:staticcheck // not needed for tests
 		c.SetContext(ctx)
 
 		return c.Status(StatusOK).SendString(fmt.Sprintf("resp_%s_returned", input))
@@ -968,52 +968,52 @@ func Test_Ctx_Cookie(t *testing.T) {
 		Expires: expire,
 		// SameSite: CookieSameSiteStrictMode, // default is "lax"
 	}
-	c.Cookie(cookie)
+	c.Res().Cookie(cookie)
 	expect := "username=john; expires=" + httpdate + "; path=/; SameSite=Lax"
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 
 	expect = "username=john; expires=" + httpdate + "; path=/"
 	cookie.SameSite = CookieSameSiteDisabled
-	c.Cookie(cookie)
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	c.Res().Cookie(cookie)
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 
 	expect = "username=john; expires=" + httpdate + "; path=/; SameSite=Strict"
 	cookie.SameSite = CookieSameSiteStrictMode
-	c.Cookie(cookie)
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	c.Res().Cookie(cookie)
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 
 	expect = "username=john; expires=" + httpdate + "; path=/; secure; SameSite=None"
 	cookie.Secure = true
 	cookie.SameSite = CookieSameSiteNoneMode
-	c.Cookie(cookie)
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	c.Res().Cookie(cookie)
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 
 	expect = "username=john; path=/; secure; SameSite=None"
 	// should remove expires and max-age headers
 	cookie.SessionOnly = true
 	cookie.Expires = expire
 	cookie.MaxAge = 10000
-	c.Cookie(cookie)
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	c.Res().Cookie(cookie)
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 
 	expect = "username=john; path=/; secure; SameSite=None"
 	// should remove expires and max-age headers when no expire and no MaxAge (default time)
 	cookie.SessionOnly = false
 	cookie.Expires = time.Time{}
 	cookie.MaxAge = 0
-	c.Cookie(cookie)
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	c.Res().Cookie(cookie)
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 
 	expect = "username=john; path=/; secure; SameSite=None; Partitioned"
 	cookie.Partitioned = true
-	c.Cookie(cookie)
-	require.Equal(t, expect, string(c.Response().Header.Peek(HeaderSetCookie)))
+	c.Res().Cookie(cookie)
+	require.Equal(t, expect, c.Res().Get(HeaderSetCookie))
 }
 
 // go test -v -run=^$ -bench=Benchmark_Ctx_Cookie -benchmem -count=4
 func Benchmark_Ctx_Cookie(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -1033,8 +1033,8 @@ func Test_Ctx_Cookies(t *testing.T) {
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
 
 	c.Request().Header.Set("Cookie", "john=doe")
-	require.Equal(t, "doe", c.Cookies("john"))
-	require.Equal(t, "default", c.Cookies("unknown", "default"))
+	require.Equal(t, "doe", c.Req().Cookies("john"))
+	require.Equal(t, "default", c.Req().Cookies("unknown", "default"))
 }
 
 // go test -run Test_Ctx_Format
@@ -1058,13 +1058,13 @@ func Test_Ctx_Format(t *testing.T) {
 	}
 
 	c.Request().Header.Set(HeaderAccept, `text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7`)
-	err := c.Format(formatHandlers("application/xhtml+xml", "application/xml", "foo/bar")...)
+	err := c.Res().Format(formatHandlers("application/xhtml+xml", "application/xml", "foo/bar")...)
 	require.Equal(t, "application/xhtml+xml", accepted)
 	require.Equal(t, "application/xhtml+xml", c.GetRespHeader(HeaderContentType))
 	require.NoError(t, err)
 	require.NotEqual(t, StatusNotAcceptable, c.Response().StatusCode())
 
-	err = c.Format(formatHandlers("foo/bar;a=b")...)
+	err = c.Res().Format(formatHandlers("foo/bar;a=b")...)
 	require.Equal(t, "foo/bar;a=b", accepted)
 	require.Equal(t, "foo/bar;a=b", c.GetRespHeader(HeaderContentType))
 	require.NoError(t, err)
@@ -1165,7 +1165,7 @@ func Test_Ctx_AutoFormat(t *testing.T) {
 	require.Equal(t, "Hello, World!", string(c.Response().Body()))
 
 	c.Request().Header.Set(HeaderAccept, MIMETextHTML)
-	err = c.AutoFormat("Hello, World!")
+	err = c.Res().AutoFormat("Hello, World!")
 	require.NoError(t, err)
 	require.Equal(t, "<p>Hello, World!</p>", string(c.Response().Body()))
 
@@ -1175,7 +1175,7 @@ func Test_Ctx_AutoFormat(t *testing.T) {
 	require.Equal(t, `"Hello, World!"`, string(c.Response().Body()))
 
 	c.Request().Header.Set(HeaderAccept, MIMETextPlain)
-	err = c.AutoFormat(complex(1, 1))
+	err = c.Res().AutoFormat(complex(1, 1))
 	require.NoError(t, err)
 	require.Equal(t, "(1+1i)", string(c.Response().Body()))
 
@@ -1544,12 +1544,12 @@ func Test_Ctx_Binders(t *testing.T) {
 	t.Run("URI", func(t *testing.T) {
 		t.Skip("URI is not ready for v3")
 		//nolint:gocritic // TODO: uncomment
-		//t.Parallel()
-		//withValues(t, func(c Ctx, testStruct *TestStruct) error {
+		// t.Parallel()
+		// withValues(t, func(c Ctx, testStruct *TestStruct) error {
 		//	c.Route().Params = []string{"name", "name2", "class", "class2"}
 		//	c.Params().value = [30]string{"foo", "bar", "111", "222"}
 		//	return c.Bind().URI(testStruct)
-		//})
+		// })
 	})
 	t.Run("ReqHeader", func(t *testing.T) {
 		t.Parallel()
@@ -2566,7 +2566,7 @@ func Test_Ctx_Params_Case_Sensitive(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_Params -benchmem -count=4
 func Benchmark_Ctx_Params(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.route = &Route{
 		Params: []string{
@@ -2939,7 +2939,7 @@ func Test_Ctx_SaveFile(t *testing.T) {
 	app := New()
 
 	app.Post("/test", func(c Ctx) error {
-		fh, err := c.FormFile("file")
+		fh, err := c.Req().FormFile("file")
 		require.NoError(t, err)
 
 		tempFile, err := os.CreateTemp(os.TempDir(), "test-")
@@ -3075,7 +3075,7 @@ func Test_Ctx_ClearCookie(t *testing.T) {
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
 
 	c.Request().Header.Set(HeaderCookie, "john=doe")
-	c.ClearCookie("john")
+	c.Res().ClearCookie("john")
 	require.True(t, strings.HasPrefix(string(c.Response().Header.Peek(HeaderSetCookie)), "john=; expires="))
 
 	c.Request().Header.Set(HeaderCookie, "test1=dummy")
@@ -3104,7 +3104,7 @@ func Test_Ctx_Download(t *testing.T) {
 	require.Equal(t, expect, c.Response().Body())
 	require.Equal(t, `attachment; filename="Awesome+File%21"`, string(c.Response().Header.Peek(HeaderContentDisposition)))
 
-	require.NoError(t, c.Download("ctx.go"))
+	require.NoError(t, c.Res().Download("ctx.go"))
 	require.Equal(t, `attachment; filename="ctx.go"`, string(c.Response().Header.Peek(HeaderContentDisposition)))
 }
 
@@ -3136,7 +3136,7 @@ func Test_Ctx_SendFile(t *testing.T) {
 
 	// test with custom error code
 	c = app.AcquireCtx(&fasthttp.RequestCtx{})
-	err = c.Status(StatusInternalServerError).SendFile("ctx.go")
+	err = c.Res().Status(StatusInternalServerError).SendFile("ctx.go")
 	// check expectation
 	require.NoError(t, err)
 	require.Equal(t, expectFileContent, c.Response().Body())
@@ -3161,7 +3161,7 @@ func Test_Ctx_SendFile_ContentType(t *testing.T) {
 
 	// 1) simple case
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
-	err := c.SendFile("./.github/testdata/fs/img/fiber.png")
+	err := c.Res().SendFile("./.github/testdata/fs/img/fiber.png")
 	// check expectation
 	require.NoError(t, err)
 	require.Equal(t, StatusOK, c.Response().StatusCode())
@@ -3746,7 +3746,7 @@ func Benchmark_Ctx_CBOR(b *testing.B) {
 func Benchmark_Ctx_JSON_Ctype(b *testing.B) {
 	app := New()
 	// TODO: Check extra allocs because of the interface stuff
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 	type SomeStruct struct {
 		Name string
 		Age  uint8
@@ -3782,7 +3782,7 @@ func Test_Ctx_JSONP(t *testing.T) {
 	require.Equal(t, `callback({"Age":20,"Name":"Grame"});`, string(c.Response().Body()))
 	require.Equal(t, "text/javascript; charset=utf-8", string(c.Response().Header.Peek("content-type")))
 
-	err = c.JSONP(Map{
+	err = c.Res().JSONP(Map{
 		"Name": "Grame",
 		"Age":  20,
 	}, "john")
@@ -3813,7 +3813,7 @@ func Test_Ctx_JSONP(t *testing.T) {
 // go test -v  -run=^$ -bench=Benchmark_Ctx_JSONP -benchmem -count=4
 func Benchmark_Ctx_JSONP(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	type SomeStruct struct {
 		Name string
@@ -3838,7 +3838,7 @@ func Benchmark_Ctx_JSONP(b *testing.B) {
 func Test_Ctx_XML(t *testing.T) {
 	t.Parallel()
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	require.Error(t, c.JSON(complex(1, 1)))
 
@@ -3897,7 +3897,7 @@ func Test_Ctx_XML(t *testing.T) {
 // go test -run=^$ -bench=Benchmark_Ctx_XML -benchmem -count=4
 func Benchmark_Ctx_XML(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 	type SomeStruct struct {
 		Name string `xml:"Name"`
 		Age  uint8  `xml:"Age"`
@@ -3936,7 +3936,7 @@ func Test_Ctx_Links(t *testing.T) {
 // go test -v  -run=^$ -bench=Benchmark_Ctx_Links -benchmem -count=4
 func Benchmark_Ctx_Links(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -4006,7 +4006,7 @@ func Test_Ctx_Render(t *testing.T) {
 	err = c.Render("./.github/testdata/template-non-exists.html", nil)
 	require.Error(t, err)
 
-	err = c.Render("./.github/testdata/template-invalid.html", nil)
+	err = c.Res().Render("./.github/testdata/template-invalid.html", nil)
 	require.Error(t, err)
 }
 
@@ -4363,7 +4363,7 @@ func Benchmark_Ctx_Render_Engine(b *testing.B) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_Get_Location_From_Route -benchmem -count=4
 func Benchmark_Ctx_Get_Location_From_Route(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	app.Get("/user/:name", func(c Ctx) error {
 		return c.SendString(c.Params("name"))
@@ -4578,14 +4578,14 @@ func Test_Ctx_SendStreamWriter(t *testing.T) {
 	c := app.AcquireCtx(&fasthttp.RequestCtx{})
 
 	err := c.SendStreamWriter(func(w *bufio.Writer) {
-		w.WriteString("Don't crash please") //nolint:errcheck, revive // It is fine to ignore the error
+		w.WriteString("Don't crash please") //nolint:errcheck // It is fine to ignore the error
 	})
 	require.NoError(t, err)
 	require.Equal(t, "Don't crash please", string(c.Response().Body()))
 
 	err = c.SendStreamWriter(func(w *bufio.Writer) {
 		for lineNum := 1; lineNum <= 5; lineNum++ {
-			fmt.Fprintf(w, "Line %d\n", lineNum) //nolint:errcheck, revive // It is fine to ignore the error
+			fmt.Fprintf(w, "Line %d\n", lineNum)
 			if err := w.Flush(); err != nil {
 				t.Errorf("unexpected error: %s", err)
 				return
@@ -4607,7 +4607,7 @@ func Test_Ctx_SendStreamWriter_Interrupted(t *testing.T) {
 	app.Get("/", func(c Ctx) error {
 		return c.SendStreamWriter(func(w *bufio.Writer) {
 			for lineNum := 1; lineNum <= 5; lineNum++ {
-				fmt.Fprintf(w, "Line %d\n", lineNum) //nolint:errcheck // It is fine to ignore the error
+				fmt.Fprintf(w, "Line %d\n", lineNum)
 
 				if err := w.Flush(); err != nil {
 					if lineNum < 3 {
@@ -4728,7 +4728,7 @@ func Benchmark_Ctx_Type(b *testing.B) {
 // go test -v  -run=^$ -bench=Benchmark_Ctx_Type_Charset -benchmem -count=4
 func Benchmark_Ctx_Type_Charset(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -4753,7 +4753,7 @@ func Test_Ctx_Vary(t *testing.T) {
 // go test -v  -run=^$ -bench=Benchmark_Ctx_Vary -benchmem -count=4
 func Benchmark_Ctx_Vary(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -4806,7 +4806,7 @@ func Test_Ctx_Writef(t *testing.T) {
 // go test -v -run=^$ -bench=Benchmark_Ctx_Writef -benchmem -count=4
 func Benchmark_Ctx_Writef(b *testing.B) {
 	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	world := "World!"
 	b.ReportAllocs()
@@ -4907,7 +4907,7 @@ func Test_Ctx_Queries(t *testing.T) {
 
 	c.Request().URI().SetQueryString("tags=apple,orange,banana&filters[tags]=apple,orange,banana&filters[category][name]=fruits&filters.tags=apple,orange,banana&filters.category.name=fruits")
 
-	queries = c.Queries()
+	queries = c.Req().Queries()
 	require.Equal(t, "apple,orange,banana", queries["tags"])
 	require.Equal(t, "apple,orange,banana", queries["filters[tags]"])
 	require.Equal(t, "fruits", queries["filters[category][name]"])
@@ -4951,11 +4951,11 @@ func Test_Ctx_BodyStreamWriter(t *testing.T) {
 	ctx := &fasthttp.RequestCtx{}
 
 	ctx.SetBodyStreamWriter(func(w *bufio.Writer) {
-		fmt.Fprintf(w, "body writer line 1\n") //nolint: errcheck // It is fine to ignore the error
+		fmt.Fprintf(w, "body writer line 1\n")
 		if err := w.Flush(); err != nil {
 			t.Errorf("unexpected error: %s", err)
 		}
-		fmt.Fprintf(w, "body writer line 2\n") //nolint: errcheck // It is fine to ignore the error
+		fmt.Fprintf(w, "body writer line 2\n")
 	})
 
 	require.True(t, ctx.IsBodyStream())
@@ -5055,7 +5055,7 @@ func Test_Ctx_IsFromLocal_X_Forwarded(t *testing.T) {
 		c := app.AcquireCtx(&fasthttp.RequestCtx{})
 		c.Request().Header.Set(HeaderXForwardedFor, "93.46.8.90")
 
-		require.False(t, c.IsFromLocal())
+		require.False(t, c.Req().IsFromLocal())
 	}
 }
 
@@ -5088,8 +5088,8 @@ func Test_Ctx_IsFromLocal_RemoteAddr(t *testing.T) {
 		fastCtx := &fasthttp.RequestCtx{}
 		fastCtx.SetRemoteAddr(localIPv6)
 		c := app.AcquireCtx(fastCtx)
-		require.Equal(t, "::1", c.IP())
-		require.True(t, c.IsFromLocal())
+		require.Equal(t, "::1", c.Req().IP())
+		require.True(t, c.Req().IsFromLocal())
 	}
 	// Test for the case fasthttp remoteAddr is set to "0:0:0:0:0:0:0:1".
 	{
@@ -5522,6 +5522,10 @@ func Test_GenericParseTypeUints(t *testing.T) {
 			value: uint(4),
 			str:   "4",
 		},
+		{
+			value: ^uint(0),
+			str:   strconv.FormatUint(uint64(^uint(0)), 10),
+		},
 	}
 
 	for _, test := range uints {

docs/addon/_category_.json

@@ -0,0 +1,9 @@
+{
+  "label": "\uD83D\uDD0C Addon",
+  "position": 5,
+  "collapsed": true,
+  "link": {
+    "type": "generated-index",
+    "description": "Addon is an additional useful package that can be used in Fiber."
+  }
+}

docs/addon/retry.md

@@ -0,0 +1,126 @@
+---
+id: retry
+---
+
+# Retry Addon
+
+Retry addon for [Fiber](https://github.com/gofiber/fiber) designed to apply retry mechanism for unsuccessful network
+operations. This addon uses an exponential backoff algorithm with jitter. It calls the function multiple times and tries
+to make it successful. If all calls are failed, then, it returns an error. It adds a jitter at each retry step because adding
+a jitter is a way to break synchronization across the client and avoid collision.
+
+## Table of Contents
+
+- [Retry Addon](#retry-addon)
+- [Table of Contents](#table-of-contents)
+- [Signatures](#signatures)
+- [Examples](#examples)
+- [Default Config](#default-config)
+- [Custom Config](#custom-config)
+- [Config](#config)
+- [Default Config Example](#default-config-example)
+
+## Signatures
+
+```go
+func NewExponentialBackoff(config ...retry.Config) *retry.ExponentialBackoff
+```
+
+## Examples
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/gofiber/fiber/v3/addon/retry"
+    "github.com/gofiber/fiber/v3/client"
+)
+
+func main() {
+    expBackoff := retry.NewExponentialBackoff(retry.Config{})
+
+    // Local variables that will be used inside of Retry
+    var resp *client.Response
+    var err error
+
+    // Retry a network request and return an error to signify to try again
+    err = expBackoff.Retry(func() error {
+        client := client.New()
+        resp, err = client.Get("https://gofiber.io")
+        if err != nil {
+            return fmt.Errorf("GET gofiber.io failed: %w", err)
+        }
+        if resp.StatusCode() != 200 {
+            return fmt.Errorf("GET gofiber.io did not return OK 200")
+        }
+        return nil
+    })
+
+    // If all retries failed, panic
+    if err != nil {
+        panic(err)
+    }
+    fmt.Printf("GET gofiber.io succeeded with status code %d\n", resp.StatusCode())
+}
+```
+
+## Default Config
+
+```go
+retry.NewExponentialBackoff()
+```
+
+## Custom Config
+
+```go
+retry.NewExponentialBackoff(retry.Config{
+    InitialInterval: 2 * time.Second,
+    MaxBackoffTime:  64 * time.Second,
+    Multiplier:      2.0,
+    MaxRetryCount:   15,
+})
+```
+
+## Config
+
+```go
+// Config defines the config for addon.
+type Config struct {
+    // InitialInterval defines the initial time interval for backoff algorithm.
+    //
+    // Optional. Default: 1 * time.Second
+    InitialInterval time.Duration
+
+    // MaxBackoffTime defines maximum time duration for backoff algorithm. When
+    // the algorithm is reached this time, rest of the retries will be maximum
+    // 32 seconds.
+    //
+    // Optional. Default: 32 * time.Second
+    MaxBackoffTime time.Duration
+
+    // Multiplier defines multiplier number of the backoff algorithm.
+    //
+    // Optional. Default: 2.0
+    Multiplier float64
+
+    // MaxRetryCount defines maximum retry count for the backoff algorithm.
+    //
+    // Optional. Default: 10
+    MaxRetryCount int
+}
+```
+
+## Default Config Example
+
+```go
+// DefaultConfig is the default config for retry.
+var DefaultConfig = Config{
+    InitialInterval: 1 * time.Second,
+    MaxBackoffTime:  32 * time.Second,
+    Multiplier:      2.0,
+    MaxRetryCount:   10,
+    currentInterval: 1 * time.Second,
+}
+```

docs/api/app.md

@@ -135,18 +135,18 @@ func (app *App) Route(path string) Register
 
 ```go
 type Register interface {
-    All(handler Handler, middleware ...Handler) Register
-    Get(handler Handler, middleware ...Handler) Register
-    Head(handler Handler, middleware ...Handler) Register
-    Post(handler Handler, middleware ...Handler) Register
-    Put(handler Handler, middleware ...Handler) Register
-    Delete(handler Handler, middleware ...Handler) Register
-    Connect(handler Handler, middleware ...Handler) Register
-    Options(handler Handler, middleware ...Handler) Register
-    Trace(handler Handler, middleware ...Handler) Register
-    Patch(handler Handler, middleware ...Handler) Register
+    All(handler Handler, handlers ...Handler) Register
+    Get(handler Handler, handlers ...Handler) Register
+    Head(handler Handler, handlers ...Handler) Register
+    Post(handler Handler, handlers ...Handler) Register
+    Put(handler Handler, handlers ...Handler) Register
+    Delete(handler Handler, handlers ...Handler) Register
+    Connect(handler Handler, handlers ...Handler) Register
+    Options(handler Handler, handlers ...Handler) Register
+    Trace(handler Handler, handlers ...Handler) Register
+    Patch(handler Handler, handlers ...Handler) Register
 
-    Add(methods []string, handler Handler, middleware ...Handler) Register
+    Add(methods []string, handler Handler, handlers ...Handler) Register
 
     Route(path string) Register
 }

docs/api/bind.md

@@ -120,6 +120,38 @@ curl -X POST -H "Content-Type: application/x-www-form-urlencoded" --data "name=j
 curl -X POST -H "Content-Type: multipart/form-data" -F "name=john" -F "pass=doe" localhost:3000
 ```
 
+:::info
+If you need to bind multipart file, you can use `*multipart.FileHeader`, `*[]*multipart.FileHeader` or `[]*multipart.FileHeader` as a field type.
+:::
+
+```go title="Example"
+type Person struct {
+    Name string                `form:"name"`
+    Pass string                `form:"pass"`
+    Avatar *multipart.FileHeader `form:"avatar"`
+}
+
+app.Post("/", func(c fiber.Ctx) error {
+    p := new(Person)
+    
+    if err := c.Bind().Form(p); err != nil {
+        return err
+    }
+    
+    log.Println(p.Name) // john
+    log.Println(p.Pass) // doe
+    log.Println(p.Avatar.Filename) // file.txt
+    
+    // ...
+})
+```
+
+Run tests with the following `curl` command:
+
+```bash
+curl -X POST -H "Content-Type: multipart/form-data" -F "name=john" -F "pass=doe" -F 'avatar=@filename' localhost:3000
+```
+
 ### JSON
 
 Binds the request JSON body to a struct.

docs/api/constants.md

@@ -2,7 +2,7 @@
 id: constants
 title: 📋 Constants
 description: Some constants for Fiber.
-sidebar_position: 8
+sidebar_position: 9
 ---
 
 ### HTTP methods were copied from net/http

docs/api/fiber.md

@@ -111,11 +111,9 @@ app.Listen(":8080", fiber.ListenConfig{
 | <Reference id="enableprefork">EnablePrefork</Reference>                 | `bool`                        | When set to true, this will spawn multiple Go processes listening on the same port.                                                           | `false` |
 | <Reference id="enableprintroutes">EnablePrintRoutes</Reference>         | `bool`                        | If set to true, will print all routes with their method, path, and handler.                                                                   | `false` |
 | <Reference id="gracefulcontext">GracefulContext</Reference>             | `context.Context`             | Field to shutdown Fiber by given context gracefully.                                                                                          | `nil`   |
-| <Reference id="ShutdownTimeout">ShutdownTimeout</Reference>             | `time.Duration`               | Specifies the maximum duration to wait for the server to gracefully shutdown. When the timeout is reached, the graceful shutdown process is interrupted and forcibly terminated, and the `context.DeadlineExceeded` error is passed to the `OnShutdownError` callback. Set to 0 to disable the timeout and wait indefinitely. | `10 * time.Second`   |
+| <Reference id="ShutdownTimeout">ShutdownTimeout</Reference>             | `time.Duration`               | Specifies the maximum duration to wait for the server to gracefully shutdown. When the timeout is reached, the graceful shutdown process is interrupted and forcibly terminated, and the `context.DeadlineExceeded` error is passed to the `OnPostShutdown` callback. Set to 0 to disable the timeout and wait indefinitely. | `10 * time.Second`   |
 | <Reference id="listeneraddrfunc">ListenerAddrFunc</Reference>           | `func(addr net.Addr)`         | Allows accessing and customizing `net.Listener`.                                                                                              | `nil`   |
 | <Reference id="listenernetwork">ListenerNetwork</Reference>             | `string`                      | Known networks are "tcp", "tcp4" (IPv4-only), "tcp6" (IPv6-only). WARNING: When prefork is set to true, only "tcp4" and "tcp6" can be chosen. | `tcp4`  |
-| <Reference id="onshutdownerror">OnShutdownError</Reference>             | `func(err error)`             | Allows to customize error behavior when gracefully shutting down the server by given signal.  Prints error with `log.Fatalf()`                | `nil`   |
-| <Reference id="onshutdownsuccess">OnShutdownSuccess</Reference>         | `func()`                      | Allows customizing success behavior when gracefully shutting down the server by given signal.                                                 | `nil`   |
 | <Reference id="tlsconfigfunc">TLSConfigFunc</Reference>                 | `func(tlsConfig *tls.Config)` | Allows customizing `tls.Config` as you want.                                                                                                  | `nil`   |
 | <Reference id="autocertmanager">AutoCertManager</Reference>             | `*autocert.Manager`           | Manages TLS certificates automatically using the ACME protocol. Enables integration with Let's Encrypt or other ACME-compatible providers.    | `nil`   |
 | <Reference id="tlsminversion">TLSMinVersion</Reference>                 | `uint16`                      | Allows customizing the TLS minimum version.    | `tls.VersionTLS12`   |
@@ -230,7 +228,7 @@ Shutdown gracefully shuts down the server without interrupting any active connec
 
 ShutdownWithTimeout will forcefully close any active connections after the timeout expires.
 
-ShutdownWithContext shuts down the server including by force if the context's deadline is exceeded.
+ShutdownWithContext shuts down the server including by force if the context's deadline is exceeded. Shutdown hooks will still be executed, even if an error occurs during the shutdown process, as they are deferred to ensure cleanup happens regardless of errors.
 
 ```go
 func (app *App) Shutdown() error

docs/api/hooks.md

@@ -15,7 +15,8 @@ With Fiber you can execute custom user functions at specific method execution po
 - [OnGroupName](#ongroupname)
 - [OnListen](#onlisten)
 - [OnFork](#onfork)
-- [OnShutdown](#onshutdown)
+- [OnPreShutdown](#onpreshutdown)
+- [OnPostShutdown](#onpostshutdown)
 - [OnMount](#onmount)
 
 ## Constants
@@ -28,7 +29,8 @@ type OnGroupHandler = func(Group) error
 type OnGroupNameHandler = OnGroupHandler
 type OnListenHandler = func(ListenData) error
 type OnForkHandler = func(int) error
-type OnShutdownHandler = func() error
+type OnPreShutdownHandler  = func() error
+type OnPostShutdownHandler = func(error) error
 type OnMountHandler = func(*App) error
 ```
 
@@ -174,12 +176,20 @@ func main() {
 func (h *Hooks) OnFork(handler ...OnForkHandler)
 ```
 
-## OnShutdown
+## OnPreShutdown
 
-`OnShutdown` is a hook to execute user functions after shutdown.
+`OnPreShutdown` is a hook to execute user functions before shutdown.
 
 ```go title="Signature"
-func (h *Hooks) OnShutdown(handler ...OnShutdownHandler)
+func (h *Hooks) OnPreShutdown(handler ...OnPreShutdownHandler)
+```
+
+## OnPostShutdown
+
+`OnPostShutdown` is a hook to execute user functions after shutdown.
+
+```go title="Signature"
+func (h *Hooks) OnPostShutdown(handler ...OnPostShutdownHandler)
 ```
 
 ## OnMount

docs/api/state.md

@@ -0,0 +1,642 @@
+---
+id: state
+title: 🗂️ State Management
+sidebar_position: 8
+---
+
+The State Management provides a global key–value store for managing application dependencies and runtime data. This store is shared across the entire application and remains consistent between requests. It is implemented using Go’s `sync.Map` to ensure safe concurrent access.
+
+## State Type
+
+`State` is a key–value store built on top of `sync.Map`. It allows storage and retrieval of dependencies and configurations in a Fiber application as well as thread–safe access to runtime data.
+
+### Definition
+
+```go
+// State is a key–value store for Fiber's app, used as a global storage for the app's dependencies.
+// It is a thread–safe implementation of a map[string]any, using sync.Map.
+type State struct {
+    dependencies sync.Map
+}
+```
+
+## Methods on State
+
+### Set
+
+Set adds or updates a key–value pair in the State.
+
+```go
+// Set adds or updates a key–value pair in the State.
+func (s *State) Set(key string, value any)
+```
+
+**Usage Example:**
+
+```go
+app.State().Set("appName", "My Fiber App")
+```
+
+### Get
+
+Get retrieves a value from the State.
+
+```go title="Signature"
+func (s *State) Get(key string) (any, bool)
+```
+
+**Usage Example:**
+
+```go
+value, ok := app.State().Get("appName")
+if ok {
+    fmt.Println("App Name:", value)
+}
+```
+
+### MustGet
+
+MustGet retrieves a value from the State and panics if the key is not found.
+
+```go title="Signature"
+func (s *State) MustGet(key string) any
+```
+
+**Usage Example:**
+
+```go
+appName := app.State().MustGet("appName")
+fmt.Println("App Name:", appName)
+```
+
+### Has
+
+Has checks if a key exists in the State.
+
+```go title="Signature"s
+func (s *State) Has(key string) bool
+```
+
+**Usage Example:**
+
+```go
+if app.State().Has("appName") {
+    fmt.Println("App Name is set.")
+}
+```
+
+### Delete
+
+Delete removes a key–value pair from the State.
+
+```go title="Signature"
+func (s *State) Delete(key string)
+```
+
+**Usage Example:**
+
+```go
+app.State().Delete("obsoleteKey")
+```
+
+### Reset
+
+Reset removes all keys from the State.
+
+```go title="Signature"
+func (s *State) Reset()
+```
+
+**Usage Example:**
+
+```go
+app.State().Reset()
+```
+
+### Keys
+
+Keys returns a slice containing all keys present in the State.
+
+```go title="Signature"
+func (s *State) Keys() []string
+```
+
+**Usage Example:**
+
+```go
+keys := app.State().Keys()
+fmt.Println("State Keys:", keys)
+```
+
+### Len
+
+Len returns the number of keys in the State.
+
+```go
+// Len returns the number of keys in the State.
+func (s *State) Len() int
+```
+
+**Usage Example:**
+
+```go
+fmt.Printf("Total State Entries: %d\n", app.State().Len())
+```
+
+### GetString
+
+GetString retrieves a string value from the State. It returns the string and a boolean indicating a successful type assertion.
+
+```go title="Signature"
+func (s *State) GetString(key string) (string, bool)
+```
+
+**Usage Example:**
+
+```go
+if appName, ok := app.State().GetString("appName"); ok {
+    fmt.Println("App Name:", appName)
+}
+```
+
+### GetInt
+
+GetInt retrieves an integer value from the State. It returns the int and a boolean indicating a successful type assertion.
+
+```go title="Signature"
+func (s *State) GetInt(key string) (int, bool)
+```
+
+**Usage Example:**
+
+```go
+if count, ok := app.State().GetInt("userCount"); ok {
+    fmt.Printf("User Count: %d\n", count)
+}
+```
+
+### GetBool
+
+GetBool retrieves a boolean value from the State. It returns the bool and a boolean indicating a successful type assertion.
+
+```go title="Signature"
+func (s *State) GetBool(key string) (value, bool)
+```
+
+**Usage Example:**
+
+```go
+if debug, ok := app.State().GetBool("debugMode"); ok {
+    fmt.Printf("Debug Mode: %v\n", debug)
+}
+```
+
+### GetFloat64
+
+GetFloat64 retrieves a float64 value from the State. It returns the float64 and a boolean indicating a successful type assertion.
+
+```go title="Signature"
+func (s *State) GetFloat64(key string) (float64, bool)
+```
+
+**Usage Example:**
+
+```go title="Signature"
+if ratio, ok := app.State().GetFloat64("scalingFactor"); ok {
+    fmt.Printf("Scaling Factor: %f\n", ratio)
+}
+```
+
+### GetUint
+
+GetUint retrieves a `uint` value from the State.
+
+```go title="Signature"
+func (s *State) GetUint(key string) (uint, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetUint("maxConnections"); ok {
+    fmt.Printf("Max Connections: %d\n", val)
+}
+```
+
+### GetInt8
+
+GetInt8 retrieves an `int8` value from the State.
+
+```go title="Signature"
+func (s *State) GetInt8(key string) (int8, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetInt8("threshold"); ok {
+    fmt.Printf("Threshold: %d\n", val)
+}
+```
+
+### GetInt16
+
+GetInt16 retrieves an `int16` value from the State.
+
+```go title="Signature"
+func (s *State) GetInt16(key string) (int16, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetInt16("minValue"); ok {
+    fmt.Printf("Minimum Value: %d\n", val)
+}
+```
+
+### GetInt32
+
+GetInt32 retrieves an `int32` value from the State.
+
+```go title="Signature"
+func (s *State) GetInt32(key string) (int32, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetInt32("portNumber"); ok {
+    fmt.Printf("Port Number: %d\n", val)
+}
+```
+
+### GetInt64
+
+GetInt64 retrieves an `int64` value from the State.
+
+```go title="Signature"
+func (s *State) GetInt64(key string) (int64, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetInt64("fileSize"); ok {
+    fmt.Printf("File Size: %d\n", val)
+}
+```
+
+### GetUint8
+
+GetUint8 retrieves a `uint8` value from the State.
+
+```go title="Signature"
+func (s *State) GetUint8(key string) (uint8, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetUint8("byteValue"); ok {
+    fmt.Printf("Byte Value: %d\n", val)
+}
+```
+
+### GetUint16
+
+GetUint16 retrieves a `uint16` value from the State.
+
+```go title="Signature"
+func (s *State) GetUint16(key string) (uint16, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetUint16("limit"); ok {
+    fmt.Printf("Limit: %d\n", val)
+}
+```
+
+### GetUint32
+
+GetUint32 retrieves a `uint32` value from the State.
+
+```go title="Signature"
+func (s *State) GetUint32(key string) (uint32, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetUint32("timeout"); ok {
+    fmt.Printf("Timeout: %d\n", val)
+}
+```
+
+### GetUint64
+
+GetUint64 retrieves a `uint64` value from the State.
+
+```go title="Signature"
+func (s *State) GetUint64(key string) (uint64, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetUint64("maxSize"); ok {
+    fmt.Printf("Max Size: %d\n", val)
+}
+```
+
+### GetUintptr
+
+GetUintptr retrieves a `uintptr` value from the State.
+
+```go title="Signature"
+func (s *State) GetUintptr(key string) (uintptr, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetUintptr("pointerValue"); ok {
+    fmt.Printf("Pointer Value: %d\n", val)
+}
+```
+
+### GetFloat32
+
+GetFloat32 retrieves a `float32` value from the State.
+
+```go title="Signature"
+func (s *State) GetFloat32(key string) (float32, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetFloat32("scalingFactor32"); ok {
+    fmt.Printf("Scaling Factor (float32): %f\n", val)
+}
+```
+
+### GetComplex64
+
+GetComplex64 retrieves a `complex64` value from the State.
+
+```go title="Signature"
+func (s *State) GetComplex64(key string) (complex64, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetComplex64("complexVal"); ok {
+    fmt.Printf("Complex Value (complex64): %v\n", val)
+}
+```
+
+### GetComplex128
+
+GetComplex128 retrieves a `complex128` value from the State.
+
+```go title="Signature"
+func (s *State) GetComplex128(key string) (complex128, bool)
+```
+
+**Usage Example:**
+
+```go
+if val, ok := app.State().GetComplex128("complexVal128"); ok {
+    fmt.Printf("Complex Value (complex128): %v\n", val)
+}
+```
+
+## Generic Functions
+
+Fiber provides generic functions to retrieve state values with type safety and fallback options.
+
+### GetState
+
+GetState retrieves a value from the State and casts it to the desired type. It returns the cast value and a boolean indicating if the cast was successful.
+
+```go title="Signature"
+func GetState[T any](s *State, key string) (T, bool)
+```
+
+**Usage Example:**
+
+```go
+// Retrieve an integer value safely.
+userCount, ok := GetState[int](app.State(), "userCount")
+if ok {
+    fmt.Printf("User Count: %d\n", userCount)
+}
+```
+
+### MustGetState
+
+MustGetState retrieves a value from the State and casts it to the desired type. It panics if the key is not found or if the type assertion fails.
+
+```go title="Signature"
+func MustGetState[T any](s *State, key string) T
+```
+
+**Usage Example:**
+
+```go
+// Retrieve the value or panic if it is not present.
+config := MustGetState[string](app.State(), "configFile")
+fmt.Println("Config File:", config)
+```
+
+### GetStateWithDefault
+
+GetStateWithDefault retrieves a value from the State, casting it to the desired type. If the key is not present, it returns the provided default value.
+
+```go title="Signature"
+func GetStateWithDefault[T any](s *State, key string, defaultVal T) T
+```
+
+**Usage Example:**
+
+```go
+// Retrieve a value with a default fallback.
+requestCount := GetStateWithDefault[int](app.State(), "requestCount", 0)
+fmt.Printf("Request Count: %d\n", requestCount)
+```
+
+## Comprehensive Examples
+
+### Example: Request Counter
+
+This example demonstrates how to track the number of requests using the State.
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/gofiber/fiber/v3"
+)
+
+func main() {
+    app := fiber.New()
+
+    // Initialize state with a counter.
+    app.State().Set("requestCount", 0)
+
+    // Middleware: Increase counter for every request.
+    app.Use(func(c fiber.Ctx) error {
+        count, _ := c.App().State().GetInt("requestCount")
+        app.State().Set("requestCount", count+1)
+        return c.Next()
+    })
+
+    app.Get("/", func(c fiber.Ctx) error {
+        return c.SendString("Hello World!")
+    })
+
+    app.Get("/stats", func(c fiber.Ctx) error {
+        count, _ := c.App().State().Get("requestCount")
+        return c.SendString(fmt.Sprintf("Total requests: %d", count))
+    })
+
+    app.Listen(":3000")
+}
+```
+
+### Example: Environment–Specific Configuration
+
+This example shows how to configure different settings based on the environment.
+
+```go
+package main
+
+import (
+    "os"
+
+    "github.com/gofiber/fiber/v3"
+)
+
+func main() {
+    app := fiber.New()
+
+    // Determine environment.
+    environment := os.Getenv("ENV")
+    if environment == "" {
+        environment = "development"
+    }
+    app.State().Set("environment", environment)
+
+    // Set environment-specific configurations.
+    if environment == "development" {
+        app.State().Set("apiUrl", "http://localhost:8080/api")
+        app.State().Set("debug", true)
+    } else {
+        app.State().Set("apiUrl", "https://api.production.com")
+        app.State().Set("debug", false)
+    }
+
+    app.Get("/config", func(c fiber.Ctx) error {
+        config := map[string]any{
+            "environment": environment,
+            "apiUrl":      fiber.GetStateWithDefault(c.App().State(), "apiUrl", ""),
+            "debug":       fiber.GetStateWithDefault(c.App().State(), "debug", false),
+        }
+        return c.JSON(config)
+    })
+
+    app.Listen(":3000")
+}
+```
+
+### Example: Dependency Injection with State Management
+
+This example demonstrates how to use the State for dependency injection in a Fiber application.
+
+```go
+package main
+
+import (
+    "context"
+    "fmt"
+    "log"
+
+    "github.com/gofiber/fiber/v3"
+    "github.com/redis/go-redis/v9"
+)
+
+type User struct {
+    ID    int    `query:"id"`
+    Name  string `query:"name"`
+    Email string `query:"email"`
+}
+
+func main() {
+    app := fiber.New()
+    ctx := context.Background()
+
+    // Initialize Redis client.
+    rdb := redis.NewClient(&redis.Options{
+        Addr:     "localhost:6379",
+        Password: "",
+        DB:       0,
+    })
+
+    // Check the Redis connection.
+    if err := rdb.Ping(ctx).Err(); err != nil {
+        log.Fatalf("Could not connect to Redis: %v", err)
+    }
+
+    // Inject the Redis client into Fiber's State for dependency injection.
+    app.State().Set("redis", rdb)
+
+    app.Get("/user/create", func(c fiber.Ctx) error {
+        var user User
+        if err := c.Bind().Query(&user); err != nil {
+            return c.Status(fiber.StatusBadRequest).SendString(err.Error())
+        }
+
+        // Save the user to the database.
+        rdb, ok := fiber.GetState[*redis.Client](c.App().State(), "redis")
+        if !ok {
+            return c.Status(fiber.StatusInternalServerError).SendString("Redis client not found")
+        }
+
+        // Save the user to the database.
+        key := fmt.Sprintf("user:%d", user.ID)
+        err := rdb.HSet(ctx, key, "name", user.Name, "email", user.Email).Err()
+        if err != nil {
+            return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
+        }
+
+        return c.JSON(user)
+    })
+
+    app.Get("/user/:id", func(c fiber.Ctx) error {
+        id := c.Params("id")
+
+        rdb, ok := fiber.GetState[*redis.Client](c.App().State(), "redis")
+        if !ok {
+            return c.Status(fiber.StatusInternalServerError).SendString("Redis client not found")
+        }
+
+        key := fmt.Sprintf("user:%s", id)
+        user, err := rdb.HGetAll(ctx, key).Result()
+        if err == redis.Nil {
+            return c.Status(fiber.StatusNotFound).SendString("User not found")
+        } else if err != nil {
+            return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
+        }
+
+        return c.JSON(user)
+    })
+
+    app.Listen(":3000")
+}
+```

docs/client/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "\uD83C\uDF0E Client",
-  "position": 5,
+  "position": 6,
   "link": {
     "type": "generated-index",
     "description": "HTTP client for Fiber."

docs/extra/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "\uD83E\uDDE9 Extra",
-  "position": 6,
+  "position": 8,
   "link": {
     "type": "generated-index",
     "description": "Extra contents for Fiber."

docs/extra/faq.md

@@ -30,7 +30,7 @@ app.Use(func(c fiber.Ctx) error {
 })
 ```
 
-## How can i use live reload ?
+## How can I use live reload?
 
 [Air](https://github.com/air-verse/air) is a handy tool that automatically restarts your Go applications whenever the source code changes, making your development process faster and more efficient.
 
@@ -99,10 +99,12 @@ If you have questions or just want to have a chat, feel free to join us via this
 
 ![](/img/support-discord.png)
 
-## Does fiber support sub domain routing ?
+## Does Fiber support subdomain routing?
 
 Yes we do, here are some examples:
-This example works v2
+
+<details>
+<summary>Example</summary>
 
 ```go
 package main
@@ -170,4 +172,18 @@ func main() {
 }
 ```
 
+</details>
+
 If more information is needed, please refer to this issue [#750](https://github.com/gofiber/fiber/issues/750)
+
+## How can I handle conversions between Fiber and net/http?
+
+The `adaptor` middleware provides utilities for converting between Fiber and `net/http`. It allows seamless integration of `net/http` handlers, middleware, and requests into Fiber applications, and vice versa.
+
+For details on how to:
+
+* Convert `net/http` handlers to Fiber handlers
+* Convert Fiber handlers to `net/http` handlers
+* Convert `fiber.Ctx` to `http.Request`
+
+See the dedicated documentation: [Adaptor Documentation](../middleware/adaptor.md).

docs/guide/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "\uD83D\uDCD6 Guide",
-  "position": 5,
+  "position": 7,
   "link": {
     "type": "generated-index",
     "description": "Guides for Fiber."

docs/guide/routing.md

@@ -250,6 +250,10 @@ app.Get("/:test<int>?", func(c fiber.Ctx) error {
 
 Custom constraints can be added to Fiber using the `app.RegisterCustomConstraint` method. Your constraints have to be compatible with the `CustomConstraint` interface.
 
+:::caution
+Attention, custom constraints can now override built-in constraints. If a custom constraint has the same name as a built-in constraint, the custom constraint will be used instead. This allows for more flexibility in defining route parameter constraints.
+:::
+
 It is a good idea to add external constraints to your project once you want to add more specific rules to your routes.
 For example, you can add a constraint to check if a parameter is a valid ULID.
 

docs/guide/validation.md

@@ -8,8 +8,7 @@ sidebar_position: 5
 
 Fiber provides the [Bind](../api/bind.md#validation) function to validate and bind [request data](../api/bind.md#binders) to a struct.
 
-```go title="Example"
-
+```go title="Basic Example"
 import "github.com/go-playground/validator/v10"
 
 type structValidator struct {
@@ -42,3 +41,71 @@ app.Post("/", func(c fiber.Ctx) error {
     return c.JSON(user)
 })
 ```
+
+```go title="Advanced Validation Example"
+type User struct {
+    Name     string `json:"name" validate:"required,min=3,max=32"`
+    Email    string `json:"email" validate:"required,email"`
+    Age      int    `json:"age" validate:"gte=0,lte=100"`
+    Password string `json:"password" validate:"required,min=8"`
+    Website  string `json:"website" validate:"url"`
+}
+
+// Custom validation error messages
+type UserWithCustomMessages struct {
+    Name     string `json:"name" validate:"required,min=3,max=32" message:"Name is required and must be between 3 and 32 characters"`
+    Email    string `json:"email" validate:"required,email" message:"Valid email is required"`
+    Age      int    `json:"age" validate:"gte=0,lte=100" message:"Age must be between 0 and 100"`
+}
+
+app.Post("/user", func(c fiber.Ctx) error {
+    user := new(User)
+    
+    if err := c.Bind().Body(user); err != nil {
+        // Handle validation errors
+        if validationErrors, ok := err.(validator.ValidationErrors); ok {
+            for _, e := range validationErrors {
+                // e.Field() - field name
+                // e.Tag() - validation tag
+                // e.Value() - invalid value
+                // e.Param() - validation parameter
+                return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{
+                    "field": e.Field(),
+                    "error": e.Error(),
+                })
+            }
+        }
+        return err
+    }
+    
+    return c.JSON(user)
+})
+```
+
+```go title="Custom Validator Example"
+// Custom validator for password strength
+type PasswordValidator struct {
+    validate *validator.Validate
+}
+
+func (v *PasswordValidator) Validate(out any) error {
+    if err := v.validate.Struct(out); err != nil {
+        return err
+    }
+    
+    // Custom password validation logic
+    if user, ok := out.(*User); ok {
+        if len(user.Password) < 8 {
+            return errors.New("password must be at least 8 characters")
+        }
+        // Add more password validation rules here
+    }
+    
+    return nil
+}
+
+// Usage
+app := fiber.New(fiber.Config{
+    StructValidator: &PasswordValidator{validate: validator.New()},
+})
+```

docs/middleware/adaptor.md

@@ -4,24 +4,34 @@ id: adaptor
 
 # Adaptor
 
-Converter for net/http handlers to/from Fiber request handlers, special thanks to [@arsmn](https://github.com/arsmn)!
+The `adaptor` package provides utilities for converting between Fiber and `net/http`. It allows seamless integration of `net/http` handlers, middleware, and requests into Fiber applications, and vice versa.
 
-## Signatures
+## Features
 
-| Name | Signature | Description
-| :--- | :--- | :---
-| HTTPHandler | `HTTPHandler(h http.Handler) fiber.Handler` | http.Handler -> fiber.Handler
-| HTTPHandlerFunc | `HTTPHandlerFunc(h http.HandlerFunc) fiber.Handler` | http.HandlerFunc -> fiber.Handler
-| HTTPMiddleware | `HTTPHandlerFunc(mw func(http.Handler) http.Handler) fiber.Handler` | func(http.Handler) http.Handler -> fiber.Handler
-| FiberHandler | `FiberHandler(h fiber.Handler) http.Handler` | fiber.Handler -> http.Handler
-| FiberHandlerFunc | `FiberHandlerFunc(h fiber.Handler) http.HandlerFunc` | fiber.Handler -> http.HandlerFunc
-| FiberApp | `FiberApp(app *fiber.App) http.HandlerFunc` | Fiber app -> http.HandlerFunc
-| ConvertRequest | `ConvertRequest(c fiber.Ctx, forServer bool) (*http.Request, error)` | fiber.Ctx -> http.Request
-| CopyContextToFiberContext | `CopyContextToFiberContext(context any, requestContext *fasthttp.RequestCtx)` | context.Context -> fasthttp.RequestCtx
+- Convert `net/http` handlers and middleware to Fiber handlers.
+- Convert Fiber handlers to `net/http` handlers.
+- Convert Fiber context (`fiber.Ctx`) into an `http.Request`.
 
-## Examples
+## API Reference
 
-### net/http to Fiber
+| Name                        | Signature                                                                     | Description                                                      |
+|-----------------------------|-------------------------------------------------------------------------------|------------------------------------------------------------------|
+| `HTTPHandler`               | `HTTPHandler(h http.Handler) fiber.Handler`                                   | Converts `http.Handler` to `fiber.Handler`                       |
+| `HTTPHandlerFunc`           | `HTTPHandlerFunc(h http.HandlerFunc) fiber.Handler`                           | Converts `http.HandlerFunc` to `fiber.Handler`                   |
+| `HTTPMiddleware`            | `HTTPMiddleware(mw func(http.Handler) http.Handler) fiber.Handler`            | Converts `http.Handler` middleware to `fiber.Handler` middleware |
+| `FiberHandler`              | `FiberHandler(h fiber.Handler) http.Handler`                                  | Converts `fiber.Handler` to `http.Handler`                       |
+| `FiberHandlerFunc`          | `FiberHandlerFunc(h fiber.Handler) http.HandlerFunc`                          | Converts `fiber.Handler` to `http.HandlerFunc`                   |
+| `FiberApp`                  | `FiberApp(app *fiber.App) http.HandlerFunc`                                   | Converts an entire Fiber app to a `http.HandlerFunc`             |
+| `ConvertRequest`            | `ConvertRequest(c fiber.Ctx, forServer bool) (*http.Request, error)`          | Converts `fiber.Ctx` into a `http.Request`                       |
+| `CopyContextToFiberContext` | `CopyContextToFiberContext(context any, requestContext *fasthttp.RequestCtx)` | Copies `context.Context` to `fasthttp.RequestCtx`                |
+
+---
+
+## Usage Examples
+
+### 1. Using `net/http` Handlers in Fiber
+
+This example demonstrates how to use standard `net/http` handlers inside a Fiber application:
 
 ```go
 package main
@@ -29,35 +39,27 @@ package main
 import (
     "fmt"
     "net/http"
-
     "github.com/gofiber/fiber/v3"
     "github.com/gofiber/fiber/v3/middleware/adaptor"
 )
 
 func main() {
-    // New fiber app
     app := fiber.New()
 
-    // http.Handler -> fiber.Handler
-    app.Get("/", adaptor.HTTPHandler(handler(greet)))
+    // Convert a http.Handler to a Fiber handler
+    app.Get("/", adaptor.HTTPHandler(http.HandlerFunc(helloHandler)))
 
-    // http.HandlerFunc -> fiber.Handler
-    app.Get("/func", adaptor.HTTPHandlerFunc(greet))
-
-    // Listen on port 3000
     app.Listen(":3000")
 }
 
-func handler(f http.HandlerFunc) http.Handler {
-    return http.HandlerFunc(f)
-}
-
-func greet(w http.ResponseWriter, r *http.Request) {
-    fmt.Fprint(w, "Hello World!")
+func helloHandler(w http.ResponseWriter, r *http.Request) {
+    fmt.Fprint(w, "Hello from net/http!")
 }
 ```
 
-### net/http middleware to Fiber
+### 2. Using `net/http` Middleware with Fiber
+
+Middleware written for `net/http` can be used in Fiber:
 
 ```go
 package main
@@ -65,111 +67,119 @@ package main
 import (
     "log"
     "net/http"
-
     "github.com/gofiber/fiber/v3"
     "github.com/gofiber/fiber/v3/middleware/adaptor"
 )
 
 func main() {
-    // New fiber app
     app := fiber.New()
 
-    // http middleware -> fiber.Handler
-    app.Use(adaptor.HTTPMiddleware(logMiddleware))
+    // Apply a http middleware in Fiber
+    app.Use(adaptor.HTTPMiddleware(loggingMiddleware))
+
+    app.Get("/", func(c fiber.Ctx) error {
+        return c.SendString("Hello Fiber!")
+    })
 
-    // Listen on port 3000
     app.Listen(":3000")
 }
 
-func logMiddleware(next http.Handler) http.Handler {
+func loggingMiddleware(next http.Handler) http.Handler {
     return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-        log.Println("log middleware")
+        log.Println("Request received")
         next.ServeHTTP(w, r)
     })
 }
 ```
 
-### Fiber Handler to net/http
+### 3. Using Fiber Handlers in `net/http`
+
+You can embed Fiber handlers inside `net/http`:
 
 ```go
 package main
 
 import (
     "net/http"
-
     "github.com/gofiber/fiber/v3"
     "github.com/gofiber/fiber/v3/middleware/adaptor"
 )
 
 func main() {
-    // fiber.Handler -> http.Handler
-    http.Handle("/", adaptor.FiberHandler(greet))
-
-      // fiber.Handler -> http.HandlerFunc
-    http.HandleFunc("/func", adaptor.FiberHandlerFunc(greet))
-
-    // Listen on port 3000
+    // Convert Fiber handler to an http.Handler
+    http.Handle("/", adaptor.FiberHandler(helloFiber))
+    
+    // Convert Fiber handler to http.HandlerFunc
+    http.HandleFunc("/func", adaptor.FiberHandlerFunc(helloFiber))
+    
     http.ListenAndServe(":3000", nil)
 }
 
-func greet(c fiber.Ctx) error {
-    return c.SendString("Hello World!")
+func helloFiber(c fiber.Ctx) error {
+    return c.SendString("Hello from Fiber!")
 }
 ```
 
-### Fiber App to net/http
+### 4. Running a Fiber App in `net/http`
+
+You can wrap a full Fiber app inside `net/http`:
 
 ```go
 package main
 
 import (
     "net/http"
-
     "github.com/gofiber/fiber/v3"
     "github.com/gofiber/fiber/v3/middleware/adaptor"
 )
 
 func main() {
     app := fiber.New()
+    app.Get("/", func(c fiber.Ctx) error {
+        return c.SendString("Hello from Fiber!")
+    })
 
-    app.Get("/greet", greet)
-
-    // Listen on port 3000
+    // Run Fiber inside an http server
     http.ListenAndServe(":3000", adaptor.FiberApp(app))
 }
-
-func greet(c fiber.Ctx) error {
-    return c.SendString("Hello World!")
-}
 ```
 
-### Fiber Context to (net/http).Request
+### 5. Converting Fiber Context (`fiber.Ctx`) to `http.Request`
+
+If you need to use a `http.Request` inside a Fiber handler:
 
 ```go
 package main
 
 import (
     "net/http"
-
     "github.com/gofiber/fiber/v3"
     "github.com/gofiber/fiber/v3/middleware/adaptor"
 )
 
 func main() {
     app := fiber.New()
-
-    app.Get("/greet", greetWithHTTPReq)
-
-    // Listen on port 3000
-    http.ListenAndServe(":3000", adaptor.FiberApp(app))
+    app.Get("/request", handleRequest)
+    app.Listen(":3000")
 }
 
-func greetWithHTTPReq(c fiber.Ctx) error {
+func handleRequest(c fiber.Ctx) error {
     httpReq, err := adaptor.ConvertRequest(c, false)
     if err != nil {
         return err
     }
-
-    return c.SendString("Request URL: " + httpReq.URL.String())
+    return c.SendString("Converted Request URL: " + httpReq.URL.String())
 }
 ```
+
+---
+
+## Summary
+
+The `adaptor` package allows easy interoperation between Fiber and `net/http`. You can:
+
+- Convert handlers and middleware in both directions.
+- Run Fiber apps inside `net/http`.
+- Convert `fiber.Ctx` to `http.Request`.
+
+This makes it simple to integrate Fiber with existing Go projects or migrate between frameworks as needed.

docs/middleware/healthcheck.md

@@ -27,7 +27,7 @@ Liveness, readiness and startup probes middleware for [Fiber](https://github.com
 ## Signatures
 
 ```go
-func NewHealthChecker(config Config) fiber.Handler
+func New(config Config) fiber.Handler
 ```
 
 ## Examples
@@ -41,38 +41,44 @@ import(
 )
 ```
 
-After you initiate your [Fiber](https://github.com/gofiber/fiber) app, you can use the following possibilities:
+After you initiate your [Fiber](https://github.com/gofiber/fiber) app, you can use the following options:
 
 ```go
 // Provide a minimal config for liveness check
-app.Get(healthcheck.DefaultLivenessEndpoint, healthcheck.NewHealthChecker())
+app.Get(healthcheck.LivenessEndpoint, healthcheck.New())
+
 // Provide a minimal config for readiness check
-app.Get(healthcheck.DefaultReadinessEndpoint, healthcheck.NewHealthChecker())
+app.Get(healthcheck.ReadinessEndpoint, healthcheck.New())
+
 // Provide a minimal config for startup check
-app.Get(healthcheck.DefaultStartupEndpoint, healthcheck.NewHealthChecker())
+app.Get(healthcheck.StartupEndpoint, healthcheck.New())
+
 // Provide a minimal config for check with custom endpoint
-app.Get("/live", healthcheck.NewHealthChecker())
+app.Get("/live", healthcheck.New())
 
 // Or extend your config for customization
-app.Get(healthcheck.DefaultLivenessEndpoint, healthcheck.NewHealthChecker(healthcheck.Config{
+app.Get(healthcheck.LivenessEndpoint, healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return true
     },
 }))
+
 // And it works the same for readiness, just change the route
-app.Get(healthcheck.DefaultReadinessEndpoint, healthcheck.NewHealthChecker(healthcheck.Config{
+app.Get(healthcheck.ReadinessEndpoint, healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return true
     },
 }))
+
 // And it works the same for startup, just change the route
-app.Get(healthcheck.DefaultStartupEndpoint, healthcheck.NewHealthChecker(healthcheck.Config{
+app.Get(healthcheck.StartupEndpoint, healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return true
     },
 }))
+
 // With a custom route and custom probe
-app.Get("/live", healthcheck.NewHealthChecker(healthcheck.Config{
+app.Get("/live", healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return true
     },
@@ -81,7 +87,7 @@ app.Get("/live", healthcheck.NewHealthChecker(healthcheck.Config{
 // It can also be used with app.All, although it will only respond to requests with the GET method
 // in case of calling the route with any method which isn't GET, the return will be 404 Not Found when app.All is used
 // and 405 Method Not Allowed when app.Get is used
-app.All(healthcheck.DefaultReadinessEndpoint, healthcheck.NewHealthChecker(healthcheck.Config{
+app.All(healthcheck.ReadinessEndpoint, healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return true
     },
@@ -108,7 +114,7 @@ type Config struct {
     // initialization and readiness checks
     //
     // Optional. Default: func(c fiber.Ctx) bool { return true }
-    Probe HealthChecker
+    Probe func(fiber.Ctx) bool
 }
 ```
 
@@ -117,7 +123,7 @@ type Config struct {
 The default configuration used by this middleware is defined as follows:
 
 ```go
-func defaultProbe(fiber.Ctx) bool { return true }
+func defaultProbe(_ fiber.Ctx) bool { return true }
 
 var ConfigDefault = Config{
     Probe:     defaultProbe,

docs/middleware/helmet.md

@@ -54,7 +54,7 @@ curl -I http://localhost:3000
 | ContentSecurityPolicy     | `string`                | ContentSecurityPolicy                       | ""               |
 | CSPReportOnly             | `bool`                  | CSPReportOnly                               | false            |
 | HSTSPreloadEnabled        | `bool`                  | HSTSPreloadEnabled                          | false            |
-| ReferrerPolicy            | `string`                | ReferrerPolicy                              | "ReferrerPolicy" |
+| ReferrerPolicy            | `string`                | ReferrerPolicy                              | "no-referrer" |
 | PermissionPolicy          | `string`                | Permissions-Policy                          | ""               |
 | CrossOriginEmbedderPolicy | `string`                | Cross-Origin-Embedder-Policy                | "require-corp"   |
 | CrossOriginOpenerPolicy   | `string`                | Cross-Origin-Opener-Policy                  | "same-origin"    |

docs/middleware/logger.md

@@ -55,13 +55,13 @@ app.Use(logger.New(logger.Config{
 }))
 
 // Custom File Writer
-file, err := os.OpenFile("./123.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+accessLog, err := os.OpenFile("./access.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
 if err != nil {
-    log.Fatalf("error opening file: %v", err)
+    log.Fatalf("error opening access.log file: %v", err)
 }
-defer file.Close()
+defer accessLog.Close()
 app.Use(logger.New(logger.Config{
-    Output: file,
+    Stream: accessLog,
 }))
 
 // Add Custom Tags
@@ -79,7 +79,7 @@ app.Use(logger.New(logger.Config{
     TimeZone:   "Asia/Shanghai",
     Done: func(c fiber.Ctx, logString []byte) {
         if c.Response().StatusCode() != fiber.StatusOK {
-            reporter.SendToSlack(logString) 
+            reporter.SendToSlack(logString)
         }
     },
 }))
@@ -88,6 +88,23 @@ app.Use(logger.New(logger.Config{
 app.Use(logger.New(logger.Config{
     DisableColors: true,
 }))
+
+// Use predefined formats 
+app.Use(logger.New(logger.Config{
+    Format: logger.FormatCommon,
+}))
+
+app.Use(logger.New(logger.Config{
+    Format: logger.FormatCombined,
+}))
+
+app.Use(logger.New(logger.Config{
+    Format: logger.FormatJSON, 
+}))
+
+app.Use(logger.New(logger.Config{
+    Format: logger.FormatECS, 
+}))
 ```
 
 ### Use Logger Middleware with Other Loggers
@@ -115,7 +132,7 @@ func main() {
 
     // Use the logger middleware with zerolog logger
     app.Use(logger.New(logger.Config{
-        Output: logger.LoggerToWriter(zap, log.LevelDebug),
+        Stream: logger.LoggerToWriter(zap, log.LevelDebug),
     }))
 
     // Define a route
@@ -129,45 +146,57 @@ func main() {
 ```
 
 :::tip
-Writing to os.File is goroutine-safe, but if you are using a custom Output that is not goroutine-safe, make sure to implement locking to properly serialize writes.
+Writing to os.File is goroutine-safe, but if you are using a custom Stream that is not goroutine-safe, make sure to implement locking to properly serialize writes.
 :::
 
 ## Config
 
 ### Config
 
-| Property         | Type                       | Description                                                                                                                      | Default                                                               |
-|:-----------------|:---------------------------|:---------------------------------------------------------------------------------------------------------------------------------|:----------------------------------------------------------------------|
-| Next             | `func(fiber.Ctx) bool`    | Next defines a function to skip this middleware when returned true.                                                              | `nil`                                                                 |
-| Done             | `func(fiber.Ctx, []byte)` | Done is a function that is called after the log string for a request is written to Output, and pass the log string as parameter. | `nil`                                                                 |
-| CustomTags       | `map[string]LogFunc`       | tagFunctions defines the custom tag action.                                                                                      | `map[string]LogFunc`                                                  |
-| Format           | `string`                   | Format defines the logging tags.                                                                                                 | `[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}\n` |
-| TimeFormat       | `string`                   | TimeFormat defines the time format for log timestamps.                                                                           | `15:04:05`                                                            |
-| TimeZone         | `string`                   | TimeZone can be specified, such as "UTC" and "America/New_York" and "Asia/Chongqing", etc                                        | `"Local"`                                                             |
-| TimeInterval     | `time.Duration`            | TimeInterval is the delay before the timestamp is updated.                                                                       | `500 * time.Millisecond`                                              |
-| Output           | `io.Writer`                | Output is a writer where logs are written.                                                                                       | `os.Stdout`                                                           |
-| LoggerFunc | `func(c fiber.Ctx, data *Data, cfg Config) error` | Custom logger function for integration with logging libraries (Zerolog, Zap, Logrus, etc). Defaults to Fiber's default logger if not defined. | `see default_logger.go defaultLoggerInstance` |
-| DisableColors    | `bool`                     | DisableColors defines if the logs output should be colorized.                                                                    | `false`                                                               |
-| enableColors     | `bool`                     | Internal field for enabling colors in the log output. (This is not a user-configurable field)                                    | -                                                                     |
-| enableLatency    | `bool`                     | Internal field for enabling latency measurement in logs. (This is not a user-configurable field)                                 | -                                                                     |
-| timeZoneLocation | `*time.Location`           | Internal field for the time zone location. (This is not a user-configurable field)                                               | -                                                                     |
+| Property      | Type                                              | Description                                                                                                                                   | Default                                                               |
+| :------------ | :------------------------------------------------ | :-------------------------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- |
+| Next          | `func(fiber.Ctx) bool`                            | Next defines a function to skip this middleware when returned true.                                                                           | `nil`                                                                 |
+| Skip          | `func(fiber.Ctx) bool`                            | Skip is a function to determine if logging is skipped or written to Stream.                                                                   | `nil`                                                                 |
+| Done          | `func(fiber.Ctx, []byte)`                         | Done is a function that is called after the log string for a request is written to Stream, and pass the log string as parameter.              | `nil`                                                                 |
+| CustomTags    | `map[string]LogFunc`                              | tagFunctions defines the custom tag action.                                                                                                   | `map[string]LogFunc`                                                  |
+| `Format`   | `string`  | Defines the logging tags. See more in [Predefined Formats](#predefined-formats), or create your own using [Tags](#constants). | `[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}\n` (same as `DefaultFormat`) |
+| TimeFormat    | `string`                                          | TimeFormat defines the time format for log timestamps.                                                                                        | `15:04:05`                                                            |
+| TimeZone      | `string`                                          | TimeZone can be specified, such as "UTC" and "America/New_York" and "Asia/Chongqing", etc                                                     | `"Local"`                                                             |
+| TimeInterval  | `time.Duration`                                   | TimeInterval is the delay before the timestamp is updated.                                                                                    | `500 * time.Millisecond`                                              |
+| Stream        | `io.Writer`                                       | Stream is a writer where logs are written.                                                                                                    | `os.Stdout`                                                           |
+| LoggerFunc    | `func(c fiber.Ctx, data *Data, cfg Config) error` | Custom logger function for integration with logging libraries (Zerolog, Zap, Logrus, etc). Defaults to Fiber's default logger if not defined. | `see default_logger.go defaultLoggerInstance`                         |
+| DisableColors | `bool`                                            | DisableColors defines if the logs output should be colorized.                                                                                 | `false`                                                               |
 
 ## Default Config
 
 ```go
 var ConfigDefault = Config{
-    Next:          nil,
-    Done:          nil,
-    Format:        "[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}\n",
-    TimeFormat:    "15:04:05",
-    TimeZone:      "Local",
-    TimeInterval:  500 * time.Millisecond,
-    Output:        os.Stdout,
-    DisableColors: false,
-    LoggerFunc:    defaultLoggerInstance,
+    Next:              nil,
+    Skip:              nil,
+    Done:              nil,
+    Format:            DefaultFormat,
+    TimeFormat:        "15:04:05",
+    TimeZone:          "Local",
+    TimeInterval:      500 * time.Millisecond,
+    Stream:            os.Stdout,
+    BeforeHandlerFunc: beforeHandlerFunc,
+    LoggerFunc:        defaultLoggerInstance,
+    enableColors:      true,
 }
 ```
 
+## Predefined Formats
+
+Logger provides predefined formats that you can use by name or directly by specifying the format string.
+
+| **Format Constant** | **Format String** | **Description** |
+|---------------------|--------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------|
+| `DefaultFormat` | `"[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}\n"` | Fiber's default logger format. |
+| `CommonFormat` | `"${ip} - - [${time}] "${method} ${url} ${protocol}" ${status} ${bytesSent}\n"` | Common Log Format (CLF) used in web server logs. |
+| `CombinedFormat` | `"${ip} - - [${time}] "${method} ${url} ${protocol}" ${status} ${bytesSent} "${referer}" "${ua}"\n"` | CLF format plus the `referer` and `user agent` fields. |
+| `JSONFormat` | `"{time: ${time}, ip: ${ip}, method: ${method}, url: ${url}, status: ${status}, bytesSent: ${bytesSent}}\n"` | JSON format for structured logging. |
+| `ECSFormat` | `"{\"@timestamp\":\"${time}\",\"ecs\":{\"version\":\"1.6.0\"},\"client\":{\"ip\":\"${ip}\"},\"http\":{\"request\":{\"method\":\"${method}\",\"url\":\"${url}\",\"protocol\":\"${protocol}\"},\"response\":{\"status_code\":${status},\"body\":{\"bytes\":${bytesSent}}}},\"log\":{\"level\":\"INFO\",\"logger\":\"fiber\"},\"message\":\"${method} ${url} responded with ${status}\"}\n"` | Elastic Common Schema (ECS) format for structured logging. |
+
 ## Constants
 
 ```go

docs/partials/routing/handler.md

@@ -9,22 +9,22 @@ Registers a route bound to a specific [HTTP method](https://developer.mozilla.or
 
 ```go title="Signatures"
 // HTTP methods
-func (app *App) Get(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Head(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Post(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Put(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Delete(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Connect(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Options(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Trace(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Patch(path string, handler Handler, middlewares ...Handler) Router
+func (app *App) Get(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Head(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Post(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Put(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Delete(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Connect(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Options(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Trace(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Patch(path string, handler Handler, handlers ...Handler) Router
 
 // Add allows you to specify a method as value
-func (app *App) Add(method, path string, handler Handler, middlewares ...Handler) Router
+func (app *App) Add(method, path string, handler Handler, handlers ...Handler) Router
 
 // All will register the route on all HTTP methods
 // Almost the same as app.Use but not bound to prefixes
-func (app *App) All(path string, handler Handler, middlewares ...Handler) Router
+func (app *App) All(path string, handler Handler, handlers ...Handler) Router
 ```
 
 ```go title="Examples"
@@ -47,9 +47,9 @@ Can be used for middleware packages and prefix catchers. These routes will only
 func (app *App) Use(args ...any) Router
 
 // Different usage variations
-func (app *App) Use(handler Handler, middlewares ...Handler) Router
-func (app *App) Use(path string, handler Handler, middlewares ...Handler) Router
-func (app *App) Use(paths []string, handler Handler, middlewares ...Handler) Router
+func (app *App) Use(handler Handler, handlers ...Handler) Router
+func (app *App) Use(path string, handler Handler, handlers ...Handler) Router
+func (app *App) Use(paths []string, handler Handler, handlers ...Handler) Router
 func (app *App) Use(path string, app *App) Router
 ```
 

docs/whats_new.md

@@ -16,6 +16,8 @@ In this guide, we'll walk you through the most important changes in Fiber `v3` a
 Here's a quick overview of the changes in Fiber `v3`:
 
 - [🚀 App](#-app)
+- [🎣 Hooks](#-hooks)
+- [🚀 Listen](#-listen)
 - [🗺️ Router](#-router)
 - [🧠 Context](#-context)
 - [📎 Binding](#-binding)
@@ -31,6 +33,7 @@ Here's a quick overview of the changes in Fiber `v3`:
   - [Filesystem](#filesystem)
   - [Monitor](#monitor)
   - [Healthcheck](#healthcheck)
+- [🔌 Addons](#-addons)
 - [📋 Migration guide](#-migration-guide)
 
 ## Drop for old Go versions
@@ -56,6 +59,7 @@ We have made several changes to the Fiber app, including:
 - **RegisterCustomBinder**: Allows for the registration of custom binders.
 - **RegisterCustomConstraint**: Allows for the registration of custom constraints.
 - **NewCtxFunc**: Introduces a new context function.
+- **State**: Provides a global state for the application, which can be used to store and retrieve data across the application. Check out the [State](./api/state) method for further details.
 
 ### Removed Methods
 
@@ -158,6 +162,63 @@ app.Listen(":444", fiber.ListenConfig{
 })
 ```
 
+## 🎣 Hooks
+
+We have made several changes to the Fiber hooks, including:
+
+- Added new shutdown hooks to provide better control over the shutdown process:
+  - `OnPreShutdown` - Executes before the server starts shutting down
+  - `OnPostShutdown` - Executes after the server has shut down, receives any shutdown error
+- Deprecated `OnShutdown` in favor of the new pre/post shutdown hooks
+- Improved shutdown hook execution order and reliability
+- Added mutex protection for hook registration and execution
+
+Important: When using shutdown hooks, ensure app.Listen() is called in a separate goroutine:
+
+```go
+// Correct usage
+go app.Listen(":3000")
+// ... register shutdown hooks
+app.Shutdown()
+
+// Incorrect usage - hooks won't work
+app.Listen(":3000") // This blocks
+app.Shutdown()      // Never reached
+```
+
+## 🚀 Listen
+
+We have made several changes to the Fiber listen, including:
+
+- Removed `OnShutdownError` and `OnShutdownSuccess` from `ListenerConfig` in favor of using `OnPostShutdown` hook which receives the shutdown error
+
+```go
+app := fiber.New()
+
+// Before - using ListenerConfig callbacks
+app.Listen(":3000", fiber.ListenerConfig{
+    OnShutdownError: func(err error) {
+        log.Printf("Shutdown error: %v", err)
+    },
+    OnShutdownSuccess: func() {
+        log.Println("Shutdown successful")
+    },
+})
+
+// After - using OnPostShutdown hook
+app.Hooks().OnPostShutdown(func(err error) error {
+    if err != nil {
+        log.Printf("Shutdown error: %v", err)
+    } else {
+        log.Println("Shutdown successful")
+    }
+    return nil
+})
+go app.Listen(":3000")
+```
+
+This change simplifies the shutdown handling by consolidating the shutdown callbacks into a single hook that receives the error status.
+
 ## 🗺 Router
 
 We have slightly adapted our router interface
@@ -487,6 +548,7 @@ Fiber v3 introduces a new binding mechanism that simplifies the process of bindi
 - Unified binding from URL parameters, query parameters, headers, and request bodies.
 - Support for custom binders and constraints.
 - Improved error handling and validation.
+- Support multipart file binding for `*multipart.FileHeader`, `*[]*multipart.FileHeader`, and `[]*multipart.FileHeader` field types.
 
 <details>
 <summary>Example</summary>
@@ -851,6 +913,47 @@ func main() {
 
 </details>
 
+The `Skip` is a function to determine if logging is skipped or written to `Stream`.
+
+<details>
+<summary>Example Usage</summary>
+
+```go
+app.Use(logger.New(logger.Config{
+    Skip: func(c fiber.Ctx) bool {
+        // Skip logging HTTP 200 requests
+        return c.Response().StatusCode() == fiber.StatusOK
+    },
+}))
+```
+
+```go
+app.Use(logger.New(logger.Config{
+    Skip: func(c fiber.Ctx) bool {
+        // Only log errors, similar to an error.log
+        return c.Response().StatusCode() < 400
+    },
+}))
+```
+
+</details>
+
+#### Predefined Formats
+
+Logger provides predefined formats that you can use by name or directly by specifying the format string.
+<details>
+
+<summary>Example Usage</summary>
+
+```go
+app.Use(logger.New(logger.Config{
+    Format: logger.FormatCombined, 
+}))
+```
+
+See more in [Logger](./middleware/logger.md#predefined-formats)
+</details>
+
 ### Filesystem
 
 We've decided to remove filesystem middleware to clear up the confusion between static and filesystem middleware.
@@ -879,6 +982,59 @@ The Healthcheck middleware has been enhanced to support more than two routes, wi
 
 Refer to the [healthcheck middleware migration guide](./middleware/healthcheck.md) or the [general migration guide](#-migration-guide) to review the changes.
 
+## 🔌 Addons
+
+In v3, Fiber introduced Addons. Addons are additional useful packages that can be used in Fiber.
+
+### Retry
+
+The Retry addon is a new addon that implements a retry mechanism for unsuccessful network operations. It uses an exponential backoff algorithm with jitter.
+It calls the function multiple times and tries to make it successful. If all calls are failed, then, it returns an error.
+It adds a jitter at each retry step because adding a jitter is a way to break synchronization across the client and avoid collision.
+
+<details>
+<summary>Example</summary>
+
+```go
+package main
+
+import (
+    "fmt"
+
+    "github.com/gofiber/fiber/v3/addon/retry"
+    "github.com/gofiber/fiber/v3/client"
+)
+
+func main() {
+    expBackoff := retry.NewExponentialBackoff(retry.Config{})
+
+    // Local variables that will be used inside of Retry
+    var resp *client.Response
+    var err error
+
+    // Retry a network request and return an error to signify to try again
+    err = expBackoff.Retry(func() error {
+        client := client.New()
+        resp, err = client.Get("https://gofiber.io")
+        if err != nil {
+            return fmt.Errorf("GET gofiber.io failed: %w", err)
+        }
+        if resp.StatusCode() != 200 {
+            return fmt.Errorf("GET gofiber.io did not return OK 200")
+        }
+        return nil
+    })
+
+    // If all retries failed, panic
+    if err != nil {
+        panic(err)
+    }
+    fmt.Printf("GET gofiber.io succeeded with status code %d\n", resp.StatusCode())
+}
+```
+
+</details>
+
 ## 📋 Migration guide
 
 - [🚀 App](#-app-1)
@@ -1409,25 +1565,25 @@ With the new version, each health check endpoint is configured separately, allow
 // after
 
 // Default liveness endpoint configuration
-app.Get(healthcheck.DefaultLivenessEndpoint, healthcheck.NewHealthChecker(healthcheck.Config{
+app.Get(healthcheck.LivenessEndpoint, healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return true
     },
 }))
 
 // Default readiness endpoint configuration
-app.Get(healthcheck.DefaultReadinessEndpoint, healthcheck.NewHealthChecker())
+app.Get(healthcheck.ReadinessEndpoint, healthcheck.New())
 
 // New default startup endpoint configuration
 // Default endpoint is /startupz
-app.Get(healthcheck.DefaultStartupEndpoint, healthcheck.NewHealthChecker(healthcheck.Config{
+app.Get(healthcheck.StartupEndpoint, healthcheck.New(healthcheck.Config{
     Probe: func(c fiber.Ctx) bool {
         return serviceA.Ready() && serviceB.Ready() && ...
     },
 }))
 
 // Custom liveness endpoint configuration
-app.Get("/live", healthcheck.NewHealthChecker())
+app.Get("/live", healthcheck.New())
 ```
 
 #### Monitor

error.go

@@ -40,7 +40,7 @@ var (
 	ErrNoHandlers = errors.New("format: at least one handler is required, but none were set")
 )
 
-// gorilla/schema errors
+// gofiber/schema errors
 type (
 	// ConversionError Conversion error exposes the internal schema.ConversionError for public use.
 	ConversionError = schema.ConversionError

go.mod

@@ -1,31 +1,30 @@
 module github.com/gofiber/fiber/v3
 
-go 1.23
+go 1.23.0
 
 require (
-	github.com/gofiber/schema v1.2.0
-	github.com/gofiber/utils/v2 v2.0.0-beta.7
+	github.com/gofiber/schema v1.3.0
+	github.com/gofiber/utils/v2 v2.0.0-beta.8
 	github.com/google/uuid v1.6.0
 	github.com/mattn/go-colorable v0.1.14
 	github.com/mattn/go-isatty v0.0.20
 	github.com/stretchr/testify v1.10.0
 	github.com/tinylib/msgp v1.2.5
 	github.com/valyala/bytebufferpool v1.0.0
-	github.com/valyala/fasthttp v1.58.0
-	golang.org/x/crypto v0.33.0
+	github.com/valyala/fasthttp v1.59.0
+	golang.org/x/crypto v0.36.0
 )
 
 require (
 	github.com/andybalholm/brotli v1.1.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fxamacker/cbor/v2 v2.7.0 // direct
+	github.com/fxamacker/cbor/v2 v2.8.0 // direct
 	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/philhofer/fwd v1.1.3-0.20240916144458-20a13a1f6b7c // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/valyala/tcplisten v1.0.0 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
-	golang.org/x/net v0.33.0 // indirect
-	golang.org/x/sys v0.30.0 // indirect
-	golang.org/x/text v0.22.0 // indirect
+	golang.org/x/net v0.37.0 // indirect
+	golang.org/x/sys v0.31.0 // indirect
+	golang.org/x/text v0.23.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -2,12 +2,12 @@ github.com/andybalholm/brotli v1.1.1 h1:PR2pgnyFznKEugtsUo0xLdDop5SKXd5Qf5ysW+7X
 github.com/andybalholm/brotli v1.1.1/go.mod h1:05ib4cKhjx3OQYUY22hTVd34Bc8upXjOLL2rKwwZBoA=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fxamacker/cbor/v2 v2.7.0 h1:iM5WgngdRBanHcxugY4JySA0nk1wZorNOpTgCMedv5E=
-github.com/fxamacker/cbor/v2 v2.7.0/go.mod h1:pxXPTn3joSm21Gbwsv0w9OSA2y1HFR9qXEeXQVeNoDQ=
-github.com/gofiber/schema v1.2.0 h1:j+ZRrNnUa/0ZuWrn/6kAtAufEr4jCJ+JuTURAMxNSZg=
-github.com/gofiber/schema v1.2.0/go.mod h1:YYwj01w3hVfaNjhtJzaqetymL56VW642YS3qZPhuE6c=
-github.com/gofiber/utils/v2 v2.0.0-beta.7 h1:NnHFrRHvhrufPABdWajcKZejz9HnCWmT/asoxRsiEbQ=
-github.com/gofiber/utils/v2 v2.0.0-beta.7/go.mod h1:J/M03s+HMdZdvhAeyh76xT72IfVqBzuz/OJkrMa7cwU=
+github.com/fxamacker/cbor/v2 v2.8.0 h1:fFtUGXUzXPHTIUdne5+zzMPTfffl3RD5qYnkY40vtxU=
+github.com/fxamacker/cbor/v2 v2.8.0/go.mod h1:vM4b+DJCtHn+zz7h3FFp/hDAI9WNWCsZj23V5ytsSxQ=
+github.com/gofiber/schema v1.3.0 h1:K3F3wYzAY+aivfCCEHPufCthu5/13r/lzp1nuk6mr3Q=
+github.com/gofiber/schema v1.3.0/go.mod h1:YYwj01w3hVfaNjhtJzaqetymL56VW642YS3qZPhuE6c=
+github.com/gofiber/utils/v2 v2.0.0-beta.8 h1:ZifwbHZqZO3YJsx1ZhDsWnPjaQ7C0YD20LHt+DQeXOU=
+github.com/gofiber/utils/v2 v2.0.0-beta.8/go.mod h1:1lCBo9vEF4RFEtTgWntipnaScJZQiM8rrsYycLZ4n9c=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
@@ -26,23 +26,21 @@ github.com/tinylib/msgp v1.2.5 h1:WeQg1whrXRFiZusidTQqzETkRpGjFjcIhW6uqWH09po=
 github.com/tinylib/msgp v1.2.5/go.mod h1:ykjzy2wzgrlvpDCRc4LA8UXy6D8bzMSuAF3WD57Gok0=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-github.com/valyala/fasthttp v1.58.0 h1:GGB2dWxSbEprU9j0iMJHgdKYJVDyjrOwF9RE59PbRuE=
-github.com/valyala/fasthttp v1.58.0/go.mod h1:SYXvHHaFp7QZHGKSHmoMipInhrI5StHrhDTYVEjK/Kw=
-github.com/valyala/tcplisten v1.0.0 h1:rBHj/Xf+E1tRGZyWIWwJDiRY0zc1Js+CV5DqwacVSA8=
-github.com/valyala/tcplisten v1.0.0/go.mod h1:T0xQ8SeCZGxckz9qRXTfG43PvQ/mcWh7FwZEA7Ioqkc=
+github.com/valyala/fasthttp v1.59.0 h1:Qu0qYHfXvPk1mSLNqcFtEk6DpxgA26hy6bmydotDpRI=
+github.com/valyala/fasthttp v1.59.0/go.mod h1:GTxNb9Bc6r2a9D0TWNSPwDz78UxnTGBViY3xZNEqyYU=
 github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
-golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
-golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
-golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
-golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
+golang.org/x/crypto v0.36.0 h1:AnAEvhDddvBdpY+uR+MyHmuZzzNqXSe/GvuDeob5L34=
+golang.org/x/crypto v0.36.0/go.mod h1:Y4J0ReaxCR1IMaabaSMugxJES1EpwhBHhv2bDHklZvc=
+golang.org/x/net v0.37.0 h1:1zLorHbz+LYj7MQlSf1+2tPIIgibq2eL5xkrGk6f+2c=
+golang.org/x/net v0.37.0/go.mod h1:ivrbrMbzFq5J41QOQh0siUuly180yBYtLp+CKbEaFx8=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
-golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
-golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
+golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
+golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY=
+golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

group.go

@@ -97,7 +97,7 @@ func (grp *Group) Use(args ...any) Router {
 			return grp
 		}
 
-		grp.app.register([]string{methodUse}, getGroupPath(grp.Prefix, prefix), grp, nil, handlers...)
+		grp.app.register([]string{methodUse}, getGroupPath(grp.Prefix, prefix), grp, handlers...)
 	}
 
 	if !grp.anyRouteDefined {
@@ -109,60 +109,60 @@ func (grp *Group) Use(args ...any) Router {
 
 // Get registers a route for GET methods that requests a representation
 // of the specified resource. Requests using GET should only retrieve data.
-func (grp *Group) Get(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodGet}, path, handler, middleware...)
+func (grp *Group) Get(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodGet}, path, handler, handlers...)
 }
 
 // Head registers a route for HEAD methods that asks for a response identical
 // to that of a GET request, but without the response body.
-func (grp *Group) Head(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodHead}, path, handler, middleware...)
+func (grp *Group) Head(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodHead}, path, handler, handlers...)
 }
 
 // Post registers a route for POST methods that is used to submit an entity to the
 // specified resource, often causing a change in state or side effects on the server.
-func (grp *Group) Post(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodPost}, path, handler, middleware...)
+func (grp *Group) Post(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodPost}, path, handler, handlers...)
 }
 
 // Put registers a route for PUT methods that replaces all current representations
 // of the target resource with the request payload.
-func (grp *Group) Put(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodPut}, path, handler, middleware...)
+func (grp *Group) Put(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodPut}, path, handler, handlers...)
 }
 
 // Delete registers a route for DELETE methods that deletes the specified resource.
-func (grp *Group) Delete(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodDelete}, path, handler, middleware...)
+func (grp *Group) Delete(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodDelete}, path, handler, handlers...)
 }
 
 // Connect registers a route for CONNECT methods that establishes a tunnel to the
 // server identified by the target resource.
-func (grp *Group) Connect(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodConnect}, path, handler, middleware...)
+func (grp *Group) Connect(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodConnect}, path, handler, handlers...)
 }
 
 // Options registers a route for OPTIONS methods that is used to describe the
 // communication options for the target resource.
-func (grp *Group) Options(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodOptions}, path, handler, middleware...)
+func (grp *Group) Options(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodOptions}, path, handler, handlers...)
 }
 
 // Trace registers a route for TRACE methods that performs a message loop-back
 // test along the path to the target resource.
-func (grp *Group) Trace(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodTrace}, path, handler, middleware...)
+func (grp *Group) Trace(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodTrace}, path, handler, handlers...)
 }
 
 // Patch registers a route for PATCH methods that is used to apply partial
 // modifications to a resource.
-func (grp *Group) Patch(path string, handler Handler, middleware ...Handler) Router {
-	return grp.Add([]string{MethodPatch}, path, handler, middleware...)
+func (grp *Group) Patch(path string, handler Handler, handlers ...Handler) Router {
+	return grp.Add([]string{MethodPatch}, path, handler, handlers...)
 }
 
 // Add allows you to specify multiple HTTP methods to register a route.
-func (grp *Group) Add(methods []string, path string, handler Handler, middleware ...Handler) Router {
-	grp.app.register(methods, getGroupPath(grp.Prefix, path), grp, handler, middleware...)
+func (grp *Group) Add(methods []string, path string, handler Handler, handlers ...Handler) Router {
+	grp.app.register(methods, getGroupPath(grp.Prefix, path), grp, append([]Handler{handler}, handlers...)...)
 	if !grp.anyRouteDefined {
 		grp.anyRouteDefined = true
 	}
@@ -171,8 +171,8 @@ func (grp *Group) Add(methods []string, path string, handler Handler, middleware
 }
 
 // All will register the handler on all HTTP methods
-func (grp *Group) All(path string, handler Handler, middleware ...Handler) Router {
-	_ = grp.Add(grp.app.config.RequestMethods, path, handler, middleware...)
+func (grp *Group) All(path string, handler Handler, handlers ...Handler) Router {
+	_ = grp.Add(grp.app.config.RequestMethods, path, handler, handlers...)
 	return grp
 }
 
@@ -183,7 +183,7 @@ func (grp *Group) All(path string, handler Handler, middleware ...Handler) Route
 func (grp *Group) Group(prefix string, handlers ...Handler) Router {
 	prefix = getGroupPath(grp.Prefix, prefix)
 	if len(handlers) > 0 {
-		grp.app.register([]string{methodUse}, prefix, grp, nil, handlers...)
+		grp.app.register([]string{methodUse}, prefix, grp, handlers...)
 	}
 
 	// Create new group

helpers.go

@@ -14,6 +14,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -51,16 +52,16 @@ func getTLSConfig(ln net.Listener) *tls.Config {
 	}
 
 	// Copy value from pointer
-	if val := reflect.Indirect(pointer); val.Type() != nil {
+	if val := reflect.Indirect(pointer); val.IsValid() {
 		// Get private field from value
-		if field := val.FieldByName("config"); field.Type() != nil {
+		if field := val.FieldByName("config"); field.IsValid() {
 			// Copy value from pointer field (unsafe)
 			newval := reflect.NewAt(field.Type(), unsafe.Pointer(field.UnsafeAddr())) //nolint:gosec // Probably the only way to extract the *tls.Config from a net.Listener. TODO: Verify there really is no easier way without using unsafe.
-			if newval.Type() == nil {
+			if !newval.IsValid() {
 				return nil
 			}
 			// Get element from pointer
-			if elem := newval.Elem(); elem.Type() != nil {
+			if elem := newval.Elem(); elem.IsValid() {
 				// Cast value to *tls.Config
 				c, ok := elem.Interface().(*tls.Config)
 				if !ok {
@@ -107,15 +108,15 @@ func (app *App) methodExist(c *DefaultCtx) bool {
 	methods := app.config.RequestMethods
 	for i := 0; i < len(methods); i++ {
 		// Skip original method
-		if c.getMethodINT() == i {
+		if c.getMethodInt() == i {
 			continue
 		}
 		// Reset stack index
 		c.setIndexRoute(-1)
 
-		tree, ok := c.App().treeStack[i][c.getTreePath()]
+		tree, ok := c.App().treeStack[i][c.treePathHash]
 		if !ok {
-			tree = c.App().treeStack[i][""]
+			tree = c.App().treeStack[i][0]
 		}
 		// Get stack length
 		lenr := len(tree) - 1
@@ -151,15 +152,15 @@ func (app *App) methodExistCustom(c CustomCtx) bool {
 	methods := app.config.RequestMethods
 	for i := 0; i < len(methods); i++ {
 		// Skip original method
-		if c.getMethodINT() == i {
+		if c.getMethodInt() == i {
 			continue
 		}
 		// Reset stack index
 		c.setIndexRoute(-1)
 
-		tree, ok := c.App().treeStack[i][c.getTreePath()]
+		tree, ok := c.App().treeStack[i][c.getTreePathHash()]
 		if !ok {
-			tree = c.App().treeStack[i][""]
+			tree = c.App().treeStack[i][0]
 		}
 		// Get stack length
 		lenr := len(tree) - 1
@@ -192,12 +193,10 @@ func (app *App) methodExistCustom(c CustomCtx) bool {
 // uniqueRouteStack drop all not unique routes from the slice
 func uniqueRouteStack(stack []*Route) []*Route {
 	var unique []*Route
-	m := make(map[*Route]int)
+	m := make(map[*Route]struct{})
 	for _, v := range stack {
 		if _, ok := m[v]; !ok {
-			// Unique key found. Record position and collect
-			// in result.
-			m[v] = len(unique)
+			m[v] = struct{}{}
 			unique = append(unique, v)
 		}
 	}
@@ -323,28 +322,23 @@ func getSplicedStrList(headerValue string, dst []string) []string {
 		return nil
 	}
 
-	var (
-		index             int
-		character         rune
-		lastElementEndsAt int
-		insertIndex       int
-	)
-	for index, character = range headerValue + "$" {
-		if character == ',' || index == len(headerValue) {
-			if insertIndex >= len(dst) {
-				oldSlice := dst
-				dst = make([]string, len(dst)+(len(dst)>>1)+2)
-				copy(dst, oldSlice)
-			}
-			dst[insertIndex] = utils.TrimLeft(headerValue[lastElementEndsAt:index], ' ')
-			lastElementEndsAt = index + 1
-			insertIndex++
+	dst = dst[:0]
+	segmentStart := 0
+	isLeadingSpace := true
+	for i, c := range headerValue {
+		switch {
+		case c == ',':
+			dst = append(dst, headerValue[segmentStart:i])
+			segmentStart = i + 1
+			isLeadingSpace = true
+		case c == ' ' && isLeadingSpace:
+			segmentStart = i + 1
+		default:
+			isLeadingSpace = false
 		}
 	}
+	dst = append(dst, headerValue[segmentStart:])
 
-	if len(dst) > insertIndex {
-		dst = dst[:insertIndex]
-	}
 	return dst
 }
 
@@ -490,7 +484,7 @@ func getOffer(header []byte, isAccepted func(spec, offer string, specParams head
 
 	if len(acceptedTypes) > 1 {
 		// Sort accepted types by quality and specificity, preserving order of equal elements
-		sortAcceptedTypes(&acceptedTypes)
+		sortAcceptedTypes(acceptedTypes)
 	}
 
 	// Find the first offer that matches the accepted types
@@ -518,19 +512,14 @@ func getOffer(header []byte, isAccepted func(spec, offer string, specParams head
 // A type with parameters has higher priority than an equivalent one without parameters.
 // e.g., text/html;a=1;b=2 comes before text/html;a=1
 // See: https://www.rfc-editor.org/rfc/rfc9110#name-content-negotiation-fields
-func sortAcceptedTypes(acceptedTypes *[]acceptedType) {
-	if acceptedTypes == nil || len(*acceptedTypes) < 2 {
-		return
-	}
-	at := *acceptedTypes
-
+func sortAcceptedTypes(at []acceptedType) {
 	for i := 1; i < len(at); i++ {
 		lo, hi := 0, i-1
 		for lo <= hi {
 			mid := (lo + hi) / 2
 			if at[i].quality < at[mid].quality ||
 				(at[i].quality == at[mid].quality && at[i].specificity < at[mid].specificity) ||
-				(at[i].quality == at[mid].quality && at[i].specificity < at[mid].specificity && len(at[i].params) < len(at[mid].params)) ||
+				(at[i].quality == at[mid].quality && at[i].specificity == at[mid].specificity && len(at[i].params) < len(at[mid].params)) ||
 				(at[i].quality == at[mid].quality && at[i].specificity == at[mid].specificity && len(at[i].params) == len(at[mid].params) && at[i].order > at[mid].order) {
 				lo = mid + 1
 			} else {
@@ -664,39 +653,35 @@ func getBytesImmutable(s string) []byte {
 func (app *App) methodInt(s string) int {
 	// For better performance
 	if len(app.configured.RequestMethods) == 0 {
-		// TODO: Use iota instead
 		switch s {
 		case MethodGet:
-			return 0
+			return methodGet
 		case MethodHead:
-			return 1
+			return methodHead
 		case MethodPost:
-			return 2
+			return methodPost
 		case MethodPut:
-			return 3
+			return methodPut
 		case MethodDelete:
-			return 4
+			return methodDelete
 		case MethodConnect:
-			return 5
+			return methodConnect
 		case MethodOptions:
-			return 6
+			return methodOptions
 		case MethodTrace:
-			return 7
+			return methodTrace
 		case MethodPatch:
-			return 8
+			return methodPatch
 		default:
 			return -1
 		}
 	}
-
 	// For method customization
-	for i, v := range app.config.RequestMethods {
-		if s == v {
-			return i
-		}
-	}
+	return slices.Index(app.config.RequestMethods, s)
+}
 
-	return -1
+func (app *App) method(methodInt int) string {
+	return app.config.RequestMethods[methodInt]
 }
 
 // IsMethodSafe reports whether the HTTP method is considered safe.
@@ -796,7 +781,7 @@ func genericParseType[V GenericType](str string, v V, defaultValue ...V) V {
 	case int64:
 		return genericParseInt[V](str, 64, func(i int64) V { return assertValueType[V, int64](i) }, defaultValue...)
 	case uint:
-		return genericParseUint[V](str, 32, func(i uint64) V { return assertValueType[V, uint](uint(i)) }, defaultValue...)
+		return genericParseUint[V](str, 0, func(i uint64) V { return assertValueType[V, uint](uint(i)) }, defaultValue...)
 	case uint8:
 		return genericParseUint[V](str, 8, func(i uint64) V { return assertValueType[V, uint8](uint8(i)) }, defaultValue...)
 	case uint16:

helpers_test.go

@@ -303,6 +303,26 @@ func Test_Utils_GetSplicedStrList(t *testing.T) {
 			headerValue:  "gzip,",
 			expectedList: []string{"gzip", ""},
 		},
+		{
+			description:  "has a space between words",
+			headerValue:  "  foo bar, hello  world",
+			expectedList: []string{"foo bar", "hello  world"},
+		},
+		{
+			description:  "single comma",
+			headerValue:  ",",
+			expectedList: []string{"", ""},
+		},
+		{
+			description:  "multiple comma",
+			headerValue:  ",,",
+			expectedList: []string{"", "", ""},
+		},
+		{
+			description:  "comma with space",
+			headerValue:  ",  ,",
+			expectedList: []string{"", "", ""},
+		},
 	}
 
 	for _, tc := range testCases {
@@ -334,7 +354,6 @@ func Test_Utils_SortAcceptedTypes(t *testing.T) {
 		{spec: "text/html", quality: 1, specificity: 3, order: 0},
 		{spec: "text/*", quality: 0.5, specificity: 2, order: 1},
 		{spec: "*/*", quality: 0.1, specificity: 1, order: 2},
-		{spec: "application/json", quality: 0.999, specificity: 3, order: 3},
 		{spec: "application/xml", quality: 1, specificity: 3, order: 4},
 		{spec: "application/pdf", quality: 1, specificity: 3, order: 5},
 		{spec: "image/png", quality: 1, specificity: 3, order: 6},
@@ -343,8 +362,9 @@ func Test_Utils_SortAcceptedTypes(t *testing.T) {
 		{spec: "image/gif", quality: 1, specificity: 3, order: 9},
 		{spec: "text/plain", quality: 1, specificity: 3, order: 10},
 		{spec: "application/json", quality: 0.999, specificity: 3, params: headerParams{"a": []byte("1")}, order: 11},
+		{spec: "application/json", quality: 0.999, specificity: 3, order: 3},
 	}
-	sortAcceptedTypes(&acceptedTypes)
+	sortAcceptedTypes(acceptedTypes)
 	require.Equal(t, []acceptedType{
 		{spec: "text/html", quality: 1, specificity: 3, order: 0},
 		{spec: "application/xml", quality: 1, specificity: 3, order: 4},
@@ -370,7 +390,7 @@ func Benchmark_Utils_SortAcceptedTypes_Sorted(b *testing.B) {
 		acceptedTypes[0] = acceptedType{spec: "text/html", quality: 1, specificity: 1, order: 0}
 		acceptedTypes[1] = acceptedType{spec: "text/*", quality: 0.5, specificity: 1, order: 1}
 		acceptedTypes[2] = acceptedType{spec: "*/*", quality: 0.1, specificity: 1, order: 2}
-		sortAcceptedTypes(&acceptedTypes)
+		sortAcceptedTypes(acceptedTypes)
 	}
 	require.Equal(b, "text/html", acceptedTypes[0].spec)
 	require.Equal(b, "text/*", acceptedTypes[1].spec)
@@ -394,7 +414,7 @@ func Benchmark_Utils_SortAcceptedTypes_Unsorted(b *testing.B) {
 		acceptedTypes[8] = acceptedType{spec: "image/*", quality: 1, specificity: 2, order: 8}
 		acceptedTypes[9] = acceptedType{spec: "image/gif", quality: 1, specificity: 3, order: 9}
 		acceptedTypes[10] = acceptedType{spec: "text/plain", quality: 1, specificity: 3, order: 10}
-		sortAcceptedTypes(&acceptedTypes)
+		sortAcceptedTypes(acceptedTypes)
 	}
 	require.Equal(b, []acceptedType{
 		{spec: "text/html", quality: 1, specificity: 3, order: 0},
@@ -546,7 +566,7 @@ func Test_Utils_TestConn_Closed_Write(t *testing.T) {
 	require.NoError(t, err)
 
 	// Close early, write should fail
-	conn.Close() //nolint:errcheck, revive // It is fine to ignore the error here
+	conn.Close() //nolint:errcheck // It is fine to ignore the error here
 	_, err = conn.Write([]byte("Response 2\n"))
 	require.ErrorIs(t, err, errTestConnClosed)
 

hooks.go

@@ -6,14 +6,15 @@ import (
 
 // OnRouteHandler Handlers define a function to create hooks for Fiber.
 type (
-	OnRouteHandler     = func(Route) error
-	OnNameHandler      = OnRouteHandler
-	OnGroupHandler     = func(Group) error
-	OnGroupNameHandler = OnGroupHandler
-	OnListenHandler    = func(ListenData) error
-	OnShutdownHandler  = func() error
-	OnForkHandler      = func(int) error
-	OnMountHandler     = func(*App) error
+	OnRouteHandler        = func(Route) error
+	OnNameHandler         = OnRouteHandler
+	OnGroupHandler        = func(Group) error
+	OnGroupNameHandler    = OnGroupHandler
+	OnListenHandler       = func(ListenData) error
+	OnPreShutdownHandler  = func() error
+	OnPostShutdownHandler = func(error) error
+	OnForkHandler         = func(int) error
+	OnMountHandler        = func(*App) error
 )
 
 // Hooks is a struct to use it with App.
@@ -22,14 +23,15 @@ type Hooks struct {
 	app *App
 
 	// Hooks
-	onRoute     []OnRouteHandler
-	onName      []OnNameHandler
-	onGroup     []OnGroupHandler
-	onGroupName []OnGroupNameHandler
-	onListen    []OnListenHandler
-	onShutdown  []OnShutdownHandler
-	onFork      []OnForkHandler
-	onMount     []OnMountHandler
+	onRoute        []OnRouteHandler
+	onName         []OnNameHandler
+	onGroup        []OnGroupHandler
+	onGroupName    []OnGroupNameHandler
+	onListen       []OnListenHandler
+	onPreShutdown  []OnPreShutdownHandler
+	onPostShutdown []OnPostShutdownHandler
+	onFork         []OnForkHandler
+	onMount        []OnMountHandler
 }
 
 // ListenData is a struct to use it with OnListenHandler
@@ -41,15 +43,16 @@ type ListenData struct {
 
 func newHooks(app *App) *Hooks {
 	return &Hooks{
-		app:         app,
-		onRoute:     make([]OnRouteHandler, 0),
-		onGroup:     make([]OnGroupHandler, 0),
-		onGroupName: make([]OnGroupNameHandler, 0),
-		onName:      make([]OnNameHandler, 0),
-		onListen:    make([]OnListenHandler, 0),
-		onShutdown:  make([]OnShutdownHandler, 0),
-		onFork:      make([]OnForkHandler, 0),
-		onMount:     make([]OnMountHandler, 0),
+		app:            app,
+		onRoute:        make([]OnRouteHandler, 0),
+		onGroup:        make([]OnGroupHandler, 0),
+		onGroupName:    make([]OnGroupNameHandler, 0),
+		onName:         make([]OnNameHandler, 0),
+		onListen:       make([]OnListenHandler, 0),
+		onPreShutdown:  make([]OnPreShutdownHandler, 0),
+		onPostShutdown: make([]OnPostShutdownHandler, 0),
+		onFork:         make([]OnForkHandler, 0),
+		onMount:        make([]OnMountHandler, 0),
 	}
 }
 
@@ -96,10 +99,17 @@ func (h *Hooks) OnListen(handler ...OnListenHandler) {
 	h.app.mutex.Unlock()
 }
 
-// OnShutdown is a hook to execute user functions after Shutdown.
-func (h *Hooks) OnShutdown(handler ...OnShutdownHandler) {
+// OnPreShutdown is a hook to execute user functions before Shutdown.
+func (h *Hooks) OnPreShutdown(handler ...OnPreShutdownHandler) {
 	h.app.mutex.Lock()
-	h.onShutdown = append(h.onShutdown, handler...)
+	h.onPreShutdown = append(h.onPreShutdown, handler...)
+	h.app.mutex.Unlock()
+}
+
+// OnPostShutdown is a hook to execute user functions after Shutdown.
+func (h *Hooks) OnPostShutdown(handler ...OnPostShutdownHandler) {
+	h.app.mutex.Lock()
+	h.onPostShutdown = append(h.onPostShutdown, handler...)
 	h.app.mutex.Unlock()
 }
 
@@ -191,10 +201,18 @@ func (h *Hooks) executeOnListenHooks(listenData ListenData) error {
 	return nil
 }
 
-func (h *Hooks) executeOnShutdownHooks() {
-	for _, v := range h.onShutdown {
+func (h *Hooks) executeOnPreShutdownHooks() {
+	for _, v := range h.onPreShutdown {
 		if err := v(); err != nil {
-			log.Errorf("failed to call shutdown hook: %v", err)
+			log.Errorf("failed to call pre shutdown hook: %v", err)
+		}
+	}
+}
+
+func (h *Hooks) executeOnPostShutdownHooks(err error) {
+	for _, v := range h.onPostShutdown {
+		if err := v(err); err != nil {
+			log.Errorf("failed to call post shutdown hook: %v", err)
 		}
 	}
 }

hooks_test.go

@@ -2,7 +2,6 @@ package fiber
 
 import (
 	"errors"
-	"fmt"
 	"testing"
 	"time"
 
@@ -83,17 +82,14 @@ func Test_Hook_OnName(t *testing.T) {
 func Test_Hook_OnName_Error(t *testing.T) {
 	t.Parallel()
 	app := New()
-	defer func() {
-		if err := recover(); err != nil {
-			require.Equal(t, "unknown error", fmt.Sprintf("%v", err))
-		}
-	}()
 
 	app.Hooks().OnName(func(_ Route) error {
 		return errors.New("unknown error")
 	})
 
-	app.Get("/", testSimpleHandler).Name("index")
+	require.PanicsWithError(t, "unknown error", func() {
+		app.Get("/", testSimpleHandler).Name("index")
+	})
 }
 
 func Test_Hook_OnGroup(t *testing.T) {
@@ -167,36 +163,99 @@ func Test_Hook_OnGroupName(t *testing.T) {
 func Test_Hook_OnGroupName_Error(t *testing.T) {
 	t.Parallel()
 	app := New()
-	defer func() {
-		if err := recover(); err != nil {
-			require.Equal(t, "unknown error", fmt.Sprintf("%v", err))
-		}
-	}()
 
 	app.Hooks().OnGroupName(func(_ Group) error {
 		return errors.New("unknown error")
 	})
 
-	grp := app.Group("/x").Name("x.")
-	grp.Get("/test", testSimpleHandler)
+	require.PanicsWithError(t, "unknown error", func() {
+		_ = app.Group("/x").Name("x.")
+	})
 }
 
-func Test_Hook_OnShutdown(t *testing.T) {
+func Test_Hook_OnPrehutdown(t *testing.T) {
 	t.Parallel()
 	app := New()
 
 	buf := bytebufferpool.Get()
 	defer bytebufferpool.Put(buf)
 
-	app.Hooks().OnShutdown(func() error {
-		_, err := buf.WriteString("shutdowning")
+	app.Hooks().OnPreShutdown(func() error {
+		_, err := buf.WriteString("pre-shutdowning")
 		require.NoError(t, err)
 
 		return nil
 	})
 
 	require.NoError(t, app.Shutdown())
-	require.Equal(t, "shutdowning", buf.String())
+	require.Equal(t, "pre-shutdowning", buf.String())
+}
+
+func Test_Hook_OnPostShutdown(t *testing.T) {
+	t.Run("should execute post shutdown hook with error", func(t *testing.T) {
+		app := New()
+		expectedErr := errors.New("test shutdown error")
+
+		hookCalled := make(chan error, 1)
+		defer close(hookCalled)
+
+		app.Hooks().OnPostShutdown(func(err error) error {
+			hookCalled <- err
+			return nil
+		})
+
+		go func() {
+			if err := app.Listen(":0"); err != nil {
+				return
+			}
+		}()
+
+		time.Sleep(100 * time.Millisecond)
+
+		app.hooks.executeOnPostShutdownHooks(expectedErr)
+
+		select {
+		case err := <-hookCalled:
+			require.Equal(t, expectedErr, err)
+		case <-time.After(time.Second):
+			t.Fatal("hook execution timeout")
+		}
+
+		require.NoError(t, app.Shutdown())
+	})
+
+	t.Run("should execute multiple hooks in order", func(t *testing.T) {
+		app := New()
+
+		execution := make([]int, 0)
+
+		app.Hooks().OnPostShutdown(func(_ error) error {
+			execution = append(execution, 1)
+			return nil
+		})
+
+		app.Hooks().OnPostShutdown(func(_ error) error {
+			execution = append(execution, 2)
+			return nil
+		})
+
+		app.hooks.executeOnPostShutdownHooks(nil)
+
+		require.Len(t, execution, 2, "expected 2 hooks to execute")
+		require.Equal(t, []int{1, 2}, execution, "hooks executed in wrong order")
+	})
+
+	t.Run("should handle hook error", func(_ *testing.T) {
+		app := New()
+		hookErr := errors.New("hook error")
+
+		app.Hooks().OnPostShutdown(func(_ error) error {
+			return hookErr
+		})
+
+		// Should not panic
+		app.hooks.executeOnPostShutdownHooks(nil)
+	})
 }
 
 func Test_Hook_OnListen(t *testing.T) {

internal/storage/memory/memory_test.go

@@ -209,7 +209,7 @@ func Benchmark_Memory_Set(b *testing.B) {
 	b.ResetTimer()
 
 	for i := 0; i < b.N; i++ {
-		_ = testStore.Set("john", []byte("doe"), 0) //nolint: errcheck // error not needed for benchmark
+		_ = testStore.Set("john", []byte("doe"), 0) //nolint:errcheck // error not needed for benchmark
 	}
 }
 
@@ -220,7 +220,7 @@ func Benchmark_Memory_Set_Parallel(b *testing.B) {
 
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {
-			_ = testStore.Set("john", []byte("doe"), 0) //nolint: errcheck // error not needed for benchmark
+			_ = testStore.Set("john", []byte("doe"), 0) //nolint:errcheck // error not needed for benchmark
 		}
 	})
 }
@@ -259,7 +259,7 @@ func Benchmark_Memory_Get(b *testing.B) {
 	b.ResetTimer()
 
 	for i := 0; i < b.N; i++ {
-		_, _ = testStore.Get("john") //nolint: errcheck // error not needed for benchmark
+		_, _ = testStore.Get("john") //nolint:errcheck // error not needed for benchmark
 	}
 }
 
@@ -273,7 +273,7 @@ func Benchmark_Memory_Get_Parallel(b *testing.B) {
 
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {
-			_, _ = testStore.Get("john") //nolint: errcheck // error not needed for benchmark
+			_, _ = testStore.Get("john") //nolint:errcheck // error not needed for benchmark
 		}
 	})
 }
@@ -315,8 +315,8 @@ func Benchmark_Memory_SetAndDelete(b *testing.B) {
 	b.ResetTimer()
 
 	for i := 0; i < b.N; i++ {
-		_ = testStore.Set("john", []byte("doe"), 0) //nolint: errcheck // error not needed for benchmark
-		_ = testStore.Delete("john")                //nolint: errcheck // error not needed for benchmark
+		_ = testStore.Set("john", []byte("doe"), 0) //nolint:errcheck // error not needed for benchmark
+		_ = testStore.Delete("john")                //nolint:errcheck // error not needed for benchmark
 	}
 }
 
@@ -327,8 +327,8 @@ func Benchmark_Memory_SetAndDelete_Parallel(b *testing.B) {
 
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {
-			_ = testStore.Set("john", []byte("doe"), 0) //nolint: errcheck // error not needed for benchmark
-			_ = testStore.Delete("john")                //nolint: errcheck // error not needed for benchmark
+			_ = testStore.Set("john", []byte("doe"), 0) //nolint:errcheck // error not needed for benchmark
+			_ = testStore.Delete("john")                //nolint:errcheck // error not needed for benchmark
 		}
 	})
 }

listen.go

@@ -60,17 +60,6 @@ type ListenConfig struct {
 	// Default: nil
 	BeforeServeFunc func(app *App) error `json:"before_serve_func"`
 
-	// OnShutdownError allows to customize error behavior when to graceful shutdown server by given signal.
-	//
-	// Print error with log.Fatalf() by default.
-	// Default: nil
-	OnShutdownError func(err error)
-
-	// OnShutdownSuccess allows to customize success behavior when to graceful shutdown server by given signal.
-	//
-	// Default: nil
-	OnShutdownSuccess func()
-
 	// AutoCertManager manages TLS certificates automatically using the ACME protocol,
 	// Enables integration with Let's Encrypt or other ACME-compatible providers.
 	//
@@ -102,7 +91,7 @@ type ListenConfig struct {
 	CertClientFile string `json:"cert_client_file"`
 
 	// When the graceful shutdown begins, use this field to set the timeout
-	// duration. If the timeout is reached, OnShutdownError will be called.
+	// duration. If the timeout is reached, OnPostShutdown will be called with the error.
 	// Set to 0 to disable the timeout and wait indefinitely.
 	//
 	// Default: 10 * time.Second
@@ -136,9 +125,6 @@ func listenConfigDefault(config ...ListenConfig) ListenConfig {
 		return ListenConfig{
 			TLSMinVersion:   tls.VersionTLS12,
 			ListenerNetwork: NetworkTCP4,
-			OnShutdownError: func(err error) {
-				log.Fatalf("shutdown: %v", err) //nolint:revive // It's an option
-			},
 			ShutdownTimeout: 10 * time.Second,
 		}
 	}
@@ -148,12 +134,6 @@ func listenConfigDefault(config ...ListenConfig) ListenConfig {
 		cfg.ListenerNetwork = NetworkTCP4
 	}
 
-	if cfg.OnShutdownError == nil {
-		cfg.OnShutdownError = func(err error) {
-			log.Fatalf("shutdown: %v", err) //nolint:revive // It's an option
-		}
-	}
-
 	if cfg.TLSMinVersion == 0 {
 		cfg.TLSMinVersion = tls.VersionTLS12
 	}
@@ -348,7 +328,7 @@ func (*App) prepareListenData(addr string, isTLS bool, cfg ListenConfig) ListenD
 }
 
 // startupMessage prepares the startup message with the handler number, port, address and other information
-func (app *App) startupMessage(addr string, isTLS bool, pids string, cfg ListenConfig) { //nolint: revive // Accepting a bool param named isTLS if fine here
+func (app *App) startupMessage(addr string, isTLS bool, pids string, cfg ListenConfig) { //nolint:revive // Accepting a bool param named isTLS if fine here
 	// ignore child processes
 	if IsChild() {
 		return
@@ -386,38 +366,35 @@ func (app *App) startupMessage(addr string, isTLS bool, pids string, cfg ListenC
 		out = colorable.NewNonColorable(os.Stdout)
 	}
 
-	fmt.Fprintf(out, "%s\n", fmt.Sprintf(figletFiberText, colors.Red+"v"+Version+colors.Reset)) //nolint:errcheck,revive // ignore error
-	fmt.Fprintf(out, strings.Repeat("-", 50)+"\n")                                              //nolint:errcheck,revive,govet // ignore error
+	fmt.Fprintf(out, "%s\n", fmt.Sprintf(figletFiberText, colors.Red+"v"+Version+colors.Reset))
+	fmt.Fprintf(out, strings.Repeat("-", 50)+"\n")
 
 	if host == "0.0.0.0" {
-		//nolint:errcheck,revive // ignore error
 		fmt.Fprintf(out,
 			"%sINFO%s Server started on: \t%s%s://127.0.0.1:%s%s (bound on host 0.0.0.0 and port %s)\n",
 			colors.Green, colors.Reset, colors.Blue, scheme, port, colors.Reset, port)
 	} else {
-		//nolint:errcheck,revive // ignore error
 		fmt.Fprintf(out,
 			"%sINFO%s Server started on: \t%s%s%s\n",
 			colors.Green, colors.Reset, colors.Blue, fmt.Sprintf("%s://%s:%s", scheme, host, port), colors.Reset)
 	}
 
 	if app.config.AppName != "" {
-		fmt.Fprintf(out, "%sINFO%s Application name: \t\t%s%s%s\n", colors.Green, colors.Reset, colors.Blue, app.config.AppName, colors.Reset) //nolint:errcheck,revive // ignore error
+		fmt.Fprintf(out, "%sINFO%s Application name: \t\t%s%s%s\n", colors.Green, colors.Reset, colors.Blue, app.config.AppName, colors.Reset)
 	}
 
-	//nolint:errcheck,revive // ignore error
 	fmt.Fprintf(out,
 		"%sINFO%s Total handlers count: \t%s%s%s\n",
 		colors.Green, colors.Reset, colors.Blue, strconv.Itoa(int(app.handlersCount)), colors.Reset)
 
 	if isPrefork == "Enabled" {
-		fmt.Fprintf(out, "%sINFO%s Prefork: \t\t\t%s%s%s\n", colors.Green, colors.Reset, colors.Blue, isPrefork, colors.Reset) //nolint:errcheck,revive // ignore error
+		fmt.Fprintf(out, "%sINFO%s Prefork: \t\t\t%s%s%s\n", colors.Green, colors.Reset, colors.Blue, isPrefork, colors.Reset)
 	} else {
-		fmt.Fprintf(out, "%sINFO%s Prefork: \t\t\t%s%s%s\n", colors.Green, colors.Reset, colors.Red, isPrefork, colors.Reset) //nolint:errcheck,revive // ignore error
+		fmt.Fprintf(out, "%sINFO%s Prefork: \t\t\t%s%s%s\n", colors.Green, colors.Reset, colors.Red, isPrefork, colors.Reset)
 	}
 
-	fmt.Fprintf(out, "%sINFO%s PID: \t\t\t%s%v%s\n", colors.Green, colors.Reset, colors.Blue, os.Getpid(), colors.Reset)       //nolint:errcheck,revive // ignore error
-	fmt.Fprintf(out, "%sINFO%s Total process count: \t%s%s%s\n", colors.Green, colors.Reset, colors.Blue, procs, colors.Reset) //nolint:errcheck,revive // ignore error
+	fmt.Fprintf(out, "%sINFO%s PID: \t\t\t%s%v%s\n", colors.Green, colors.Reset, colors.Blue, os.Getpid(), colors.Reset)
+	fmt.Fprintf(out, "%sINFO%s Total process count: \t%s%s%s\n", colors.Green, colors.Reset, colors.Blue, procs, colors.Reset)
 
 	if cfg.EnablePrefork {
 		// Turn the `pids` variable (in the form ",a,b,c,d,e,f,etc") into a slice of PIDs
@@ -428,7 +405,7 @@ func (app *App) startupMessage(addr string, isTLS bool, pids string, cfg ListenC
 			}
 		}
 
-		fmt.Fprintf(out, "%sINFO%s Child PIDs: \t\t%s", colors.Green, colors.Reset, colors.Blue) //nolint:errcheck,revive // ignore error
+		fmt.Fprintf(out, "%sINFO%s Child PIDs: \t\t%s", colors.Green, colors.Reset, colors.Blue)
 		totalPids := len(pidSlice)
 		rowTotalPidCount := 10
 
@@ -441,17 +418,17 @@ func (app *App) startupMessage(addr string, isTLS bool, pids string, cfg ListenC
 			}
 
 			for n, pid := range pidSlice[start:end] {
-				fmt.Fprintf(out, "%s", pid) //nolint:errcheck,revive // ignore error
+				fmt.Fprintf(out, "%s", pid)
 				if n+1 != len(pidSlice[start:end]) {
-					fmt.Fprintf(out, ", ") //nolint:errcheck,revive // ignore error
+					fmt.Fprintf(out, ", ")
 				}
 			}
-			fmt.Fprintf(out, "\n%s", colors.Reset) //nolint:errcheck,revive // ignore error
+			fmt.Fprintf(out, "\n%s", colors.Reset)
 		}
 	}
 
 	// add new Line as spacer
-	fmt.Fprintf(out, "\n%s", colors.Reset) //nolint:errcheck,revive // ignore error
+	fmt.Fprintf(out, "\n%s", colors.Reset)
 }
 
 // printRoutesMessage print all routes with method, path, name and handlers
@@ -493,11 +470,10 @@ func (app *App) printRoutesMessage() {
 		return routes[i].path < routes[j].path
 	})
 
-	fmt.Fprintf(w, "%smethod\t%s| %spath\t%s| %sname\t%s| %shandlers\t%s\n", colors.Blue, colors.White, colors.Green, colors.White, colors.Cyan, colors.White, colors.Yellow, colors.Reset) //nolint:errcheck,revive // ignore error
-	fmt.Fprintf(w, "%s------\t%s| %s----\t%s| %s----\t%s| %s--------\t%s\n", colors.Blue, colors.White, colors.Green, colors.White, colors.Cyan, colors.White, colors.Yellow, colors.Reset) //nolint:errcheck,revive // ignore error
+	fmt.Fprintf(w, "%smethod\t%s| %spath\t%s| %sname\t%s| %shandlers\t%s\n", colors.Blue, colors.White, colors.Green, colors.White, colors.Cyan, colors.White, colors.Yellow, colors.Reset)
+	fmt.Fprintf(w, "%s------\t%s| %s----\t%s| %s----\t%s| %s--------\t%s\n", colors.Blue, colors.White, colors.Green, colors.White, colors.Cyan, colors.White, colors.Yellow, colors.Reset)
 
 	for _, route := range routes {
-		//nolint:errcheck,revive // ignore error
 		fmt.Fprintf(w, "%s%s\t%s| %s%s\t%s| %s%s\t%s| %s%s%s\n", colors.Blue, route.method, colors.White, colors.Green, route.path, colors.White, colors.Cyan, route.name, colors.White, colors.Yellow, route.handlers, colors.Reset)
 	}
 
@@ -517,11 +493,9 @@ func (app *App) gracefulShutdown(ctx context.Context, cfg ListenConfig) {
 	}
 
 	if err != nil {
-		cfg.OnShutdownError(err)
+		app.hooks.executeOnPostShutdownHooks(err)
 		return
 	}
 
-	if success := cfg.OnShutdownSuccess; success != nil {
-		success()
-	}
+	app.hooks.executeOnPostShutdownHooks(nil)
 }

listen_test.go

@@ -15,6 +15,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/gofiber/utils/v2"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/valyala/fasthttp"
@@ -37,98 +38,42 @@ func Test_Listen(t *testing.T) {
 
 // go test -run Test_Listen_Graceful_Shutdown
 func Test_Listen_Graceful_Shutdown(t *testing.T) {
-	var mu sync.Mutex
-	var shutdown bool
-
-	app := New()
-
-	app.Get("/", func(c Ctx) error {
-		return c.SendString(c.Hostname())
+	t.Run("Basic Graceful Shutdown", func(t *testing.T) {
+		testGracefulShutdown(t, 0)
 	})
 
-	ln := fasthttputil.NewInmemoryListener()
-	errs := make(chan error)
+	t.Run("Shutdown With Timeout", func(t *testing.T) {
+		testGracefulShutdown(t, 500*time.Millisecond)
+	})
 
-	go func() {
-		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
-		defer cancel()
-
-		errs <- app.Listener(ln, ListenConfig{
-			DisableStartupMessage: true,
-			GracefulContext:       ctx,
-			OnShutdownSuccess: func() {
-				mu.Lock()
-				shutdown = true
-				mu.Unlock()
-			},
-		})
-	}()
-
-	// Server readiness check
-	for i := 0; i < 10; i++ {
-		conn, err := ln.Dial()
-		if err == nil {
-			conn.Close() //nolint:errcheck // ignore error
-			break
-		}
-		// Wait a bit before retrying
-		time.Sleep(100 * time.Millisecond)
-		if i == 9 {
-			t.Fatalf("Server did not become ready in time: %v", err)
-		}
-	}
-
-	testCases := []struct {
-		ExpectedErr        error
-		ExpectedBody       string
-		Time               time.Duration
-		ExpectedStatusCode int
-	}{
-		{Time: 500 * time.Millisecond, ExpectedBody: "example.com", ExpectedStatusCode: StatusOK, ExpectedErr: nil},
-		{Time: 3 * time.Second, ExpectedBody: "", ExpectedStatusCode: StatusOK, ExpectedErr: fasthttputil.ErrInmemoryListenerClosed},
-	}
-
-	for _, tc := range testCases {
-		time.Sleep(tc.Time)
-
-		req := fasthttp.AcquireRequest()
-		req.SetRequestURI("http://example.com")
-
-		client := fasthttp.HostClient{}
-		client.Dial = func(_ string) (net.Conn, error) { return ln.Dial() }
-
-		resp := fasthttp.AcquireResponse()
-		err := client.Do(req, resp)
-
-		require.Equal(t, tc.ExpectedErr, err)
-		require.Equal(t, tc.ExpectedStatusCode, resp.StatusCode())
-		require.Equal(t, tc.ExpectedBody, string(resp.Body()))
-
-		fasthttp.ReleaseRequest(req)
-		fasthttp.ReleaseResponse(resp)
-	}
-
-	mu.Lock()
-	err := <-errs
-	require.True(t, shutdown)
-	require.NoError(t, err)
-	mu.Unlock()
+	t.Run("Shutdown With Timeout Error", func(t *testing.T) {
+		testGracefulShutdown(t, 1*time.Nanosecond)
+	})
 }
 
-// go test -run Test_Listen_Graceful_Shutdown_Timeout
-func Test_Listen_Graceful_Shutdown_Timeout(t *testing.T) {
+func testGracefulShutdown(t *testing.T, shutdownTimeout time.Duration) {
+	t.Helper()
+
 	var mu sync.Mutex
-	var shutdownSuccess bool
-	var shutdownTimeoutError error
+	var shutdown bool
+	var receivedErr error
 
 	app := New()
-
 	app.Get("/", func(c Ctx) error {
+		time.Sleep(10 * time.Millisecond)
 		return c.SendString(c.Hostname())
 	})
 
 	ln := fasthttputil.NewInmemoryListener()
-	errs := make(chan error)
+	errs := make(chan error, 1)
+
+	app.hooks.OnPostShutdown(func(err error) error {
+		mu.Lock()
+		defer mu.Unlock()
+		shutdown = true
+		receivedErr = err
+		return nil
+	})
 
 	go func() {
 		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
@@ -137,93 +82,83 @@ func Test_Listen_Graceful_Shutdown_Timeout(t *testing.T) {
 		errs <- app.Listener(ln, ListenConfig{
 			DisableStartupMessage: true,
 			GracefulContext:       ctx,
-			ShutdownTimeout:       500 * time.Millisecond,
-			OnShutdownSuccess: func() {
-				mu.Lock()
-				shutdownSuccess = true
-				mu.Unlock()
-			},
-			OnShutdownError: func(err error) {
-				mu.Lock()
-				shutdownTimeoutError = err
-				mu.Unlock()
-			},
+			ShutdownTimeout:       shutdownTimeout,
 		})
 	}()
 
-	// Server readiness check
-	for i := 0; i < 10; i++ {
+	require.Eventually(t, func() bool {
 		conn, err := ln.Dial()
-		// To test a graceful shutdown timeout, do not close the connection.
 		if err == nil {
-			_ = conn
-			break
-		}
-		// Wait a bit before retrying
-		time.Sleep(100 * time.Millisecond)
-		if i == 9 {
-			t.Fatalf("Server did not become ready in time: %v", err)
+			if err := conn.Close(); err != nil {
+				t.Logf("error closing connection: %v", err)
+			}
+			return true
 		}
+		return false
+	}, time.Second, 100*time.Millisecond, "Server failed to become ready")
+
+	client := fasthttp.HostClient{
+		Dial: func(_ string) (net.Conn, error) { return ln.Dial() },
 	}
 
-	testCases := []struct {
-		ExpectedErr             error
-		ExpectedShutdownError   error
-		ExpectedBody            string
-		Time                    time.Duration
-		ExpectedStatusCode      int
-		ExpectedShutdownSuccess bool
-	}{
+	type testCase struct {
+		expectedErr        error
+		expectedBody       string
+		name               string
+		waitTime           time.Duration
+		expectedStatusCode int
+		closeConnection    bool
+	}
+
+	testCases := []testCase{
 		{
-			Time:                    100 * time.Millisecond,
-			ExpectedBody:            "example.com",
-			ExpectedStatusCode:      StatusOK,
-			ExpectedErr:             nil,
-			ExpectedShutdownError:   nil,
-			ExpectedShutdownSuccess: false,
+			name:               "Server running normally",
+			waitTime:           500 * time.Millisecond,
+			expectedBody:       "example.com",
+			expectedStatusCode: StatusOK,
+			expectedErr:        nil,
+			closeConnection:    true,
 		},
 		{
-			Time:                    3 * time.Second,
-			ExpectedBody:            "",
-			ExpectedStatusCode:      StatusOK,
-			ExpectedErr:             fasthttputil.ErrInmemoryListenerClosed,
-			ExpectedShutdownError:   context.DeadlineExceeded,
-			ExpectedShutdownSuccess: false,
+			name:               "Server shutdown complete",
+			waitTime:           3 * time.Second,
+			expectedBody:       "",
+			expectedStatusCode: StatusOK,
+			expectedErr:        fasthttputil.ErrInmemoryListenerClosed,
+			closeConnection:    true,
 		},
 	}
 
 	for _, tc := range testCases {
-		time.Sleep(tc.Time)
+		t.Run(tc.name, func(t *testing.T) {
+			time.Sleep(tc.waitTime)
 
-		req := fasthttp.AcquireRequest()
-		req.SetRequestURI("http://example.com")
+			req := fasthttp.AcquireRequest()
+			defer fasthttp.ReleaseRequest(req)
+			req.SetRequestURI("http://example.com")
 
-		client := fasthttp.HostClient{}
-		client.Dial = func(_ string) (net.Conn, error) { return ln.Dial() }
+			resp := fasthttp.AcquireResponse()
+			defer fasthttp.ReleaseResponse(resp)
 
-		resp := fasthttp.AcquireResponse()
-		err := client.Do(req, resp)
+			err := client.Do(req, resp)
 
-		if err == nil {
-			require.NoError(t, err)
-			require.Equal(t, tc.ExpectedStatusCode, resp.StatusCode())
-			require.Equal(t, tc.ExpectedBody, string(resp.Body()))
-		} else {
-			require.ErrorIs(t, err, tc.ExpectedErr)
-		}
-
-		mu.Lock()
-		require.Equal(t, tc.ExpectedShutdownSuccess, shutdownSuccess)
-		require.Equal(t, tc.ExpectedShutdownError, shutdownTimeoutError)
-		mu.Unlock()
-
-		fasthttp.ReleaseRequest(req)
-		fasthttp.ReleaseResponse(resp)
+			if tc.expectedErr == nil {
+				require.NoError(t, err)
+				require.Equal(t, tc.expectedStatusCode, resp.StatusCode())
+				require.Equal(t, tc.expectedBody, utils.UnsafeString(resp.Body()))
+			} else {
+				require.ErrorIs(t, err, tc.expectedErr)
+			}
+		})
 	}
 
 	mu.Lock()
-	err := <-errs
-	require.NoError(t, err)
+	require.True(t, shutdown)
+	if shutdownTimeout == 1*time.Nanosecond {
+		require.Error(t, receivedErr)
+		require.ErrorIs(t, receivedErr, context.DeadlineExceeded)
+	}
+	require.NoError(t, <-errs)
 	mu.Unlock()
 }
 

log/default.go

@@ -53,9 +53,9 @@ func (l *defaultLogger) privateLogf(lv Level, format string, fmtArgs []any) {
 	buf.WriteString(level)
 
 	if len(fmtArgs) > 0 {
-		_, _ = fmt.Fprintf(buf, format, fmtArgs...) //nolint: errcheck // It is fine to ignore the error
+		_, _ = fmt.Fprintf(buf, format, fmtArgs...)
 	} else {
-		_, _ = fmt.Fprint(buf, fmtArgs...) //nolint: errcheck // It is fine to ignore the error
+		_, _ = fmt.Fprint(buf, fmtArgs...)
 	}
 
 	_ = l.stdlog.Output(l.depth, buf.String()) //nolint:errcheck // It is fine to ignore the error

middleware/adaptor/adaptor_test.go

@@ -1,4 +1,4 @@
-//nolint:contextcheck, revive // Much easier to just ignore memory leaks in tests
+//nolint:contextcheck,revive // Much easier to just ignore memory leaks in tests
 package adaptor
 
 import (
@@ -68,7 +68,7 @@ func Test_HTTPHandler(t *testing.T) {
 		w.Header().Set("Header1", "value1")
 		w.Header().Set("Header2", "value2")
 		w.WriteHeader(http.StatusBadRequest)
-		fmt.Fprintf(w, "request body is %q", body) //nolint:errcheck // not needed
+		fmt.Fprintf(w, "request body is %q", body)
 	}
 	fiberH := HTTPHandlerFunc(http.HandlerFunc(nethttpH))
 	fiberH = setFiberContextValueMiddleware(fiberH, expectedContextKey, expectedContextValue)

middleware/cache/cache.go

@@ -35,17 +35,17 @@ const (
 	noStore = "no-store"
 )
 
-var ignoreHeaders = map[string]any{
-	"Connection":          nil,
-	"Keep-Alive":          nil,
-	"Proxy-Authenticate":  nil,
-	"Proxy-Authorization": nil,
-	"TE":                  nil,
-	"Trailers":            nil,
-	"Transfer-Encoding":   nil,
-	"Upgrade":             nil,
-	"Content-Type":        nil, // already stored explicitly by the cache manager
-	"Content-Encoding":    nil, // already stored explicitly by the cache manager
+var ignoreHeaders = map[string]struct{}{
+	"Connection":          {},
+	"Keep-Alive":          {},
+	"Proxy-Authenticate":  {},
+	"Proxy-Authorization": {},
+	"TE":                  {},
+	"Trailers":            {},
+	"Transfer-Encoding":   {},
+	"Upgrade":             {},
+	"Content-Type":        {}, // already stored explicitly by the cache manager
+	"Content-Encoding":    {}, // already stored explicitly by the cache manager
 }
 
 var cacheableStatusCodes = map[int]bool{

middleware/csrf/csrf_test.go

@@ -1333,56 +1333,65 @@ func Test_CSRF_Cookie_Injection_Exploit(t *testing.T) {
 }
 
 // TODO: use this test case and make the unsafe header value bug from https://github.com/gofiber/fiber/issues/2045 reproducible and permanently fixed/tested by this testcase
-// func Test_CSRF_UnsafeHeaderValue(t *testing.T) {
-//  t.Parallel()
-// 	app := fiber.New()
+func Test_CSRF_UnsafeHeaderValue(t *testing.T) {
+	t.SkipNow()
+	t.Parallel()
+	app := fiber.New()
 
-// 	app.Use(New())
-// 	app.Get("/", func(c fiber.Ctx) error {
-// 		return c.SendStatus(fiber.StatusOK)
-// 	})
-// 	app.Get("/test", func(c fiber.Ctx) error {
-// 		return c.SendStatus(fiber.StatusOK)
-// 	})
-// 	app.Post("/", func(c fiber.Ctx) error {
-// 		return c.SendStatus(fiber.StatusOK)
-// 	})
+	app.Use(New())
+	app.Get("/", func(c fiber.Ctx) error {
+		return c.SendStatus(fiber.StatusOK)
+	})
+	app.Get("/test", func(c fiber.Ctx) error {
+		return c.SendStatus(fiber.StatusOK)
+	})
+	app.Post("/", func(c fiber.Ctx) error {
+		return c.SendStatus(fiber.StatusOK)
+	})
 
-// 	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", nil))
-// 	require.NoError(t, err)
-// 	require.Equal(t, fiber.StatusOK, resp.StatusCode)
+	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", nil))
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusOK, resp.StatusCode)
 
-// 	var token string
-// 	for _, c := range resp.Cookies() {
-// 		if c.Name != ConfigDefault.CookieName {
-// 			continue
-// 		}
-// 		token = c.Value
-// 		break
-// 	}
+	var token string
+	for _, c := range resp.Cookies() {
+		if c.Name != ConfigDefault.CookieName {
+			continue
+		}
+		token = c.Value
+		break
+	}
 
-// 	fmt.Println("token", token)
+	t.Log("token", token)
 
-// 	getReq := httptest.NewRequest(fiber.MethodGet, "/", nil)
-// 	getReq.Header.Set(HeaderName, token)
-// 	resp, err = app.Test(getReq)
+	getReq := httptest.NewRequest(fiber.MethodGet, "/", nil)
+	getReq.Header.Set(HeaderName, token)
+	resp, err = app.Test(getReq)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusOK, resp.StatusCode)
 
-// 	getReq = httptest.NewRequest(fiber.MethodGet, "/test", nil)
-// 	getReq.Header.Set("X-Requested-With", "XMLHttpRequest")
-// 	getReq.Header.Set(fiber.HeaderCacheControl, "no")
-// 	getReq.Header.Set(HeaderName, token)
+	getReq = httptest.NewRequest(fiber.MethodGet, "/test", nil)
+	getReq.Header.Set("X-Requested-With", "XMLHttpRequest")
+	getReq.Header.Set(fiber.HeaderCacheControl, "no")
+	getReq.Header.Set(HeaderName, token)
 
-// 	resp, err = app.Test(getReq)
+	resp, err = app.Test(getReq)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusOK, resp.StatusCode)
 
-// 	getReq.Header.Set(fiber.HeaderAccept, "*/*")
-// 	getReq.Header.Del(HeaderName)
-// 	resp, err = app.Test(getReq)
+	getReq.Header.Set(fiber.HeaderAccept, "*/*")
+	getReq.Header.Del(HeaderName)
+	resp, err = app.Test(getReq)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusOK, resp.StatusCode)
 
-// 	postReq := httptest.NewRequest(fiber.MethodPost, "/", nil)
-// 	postReq.Header.Set("X-Requested-With", "XMLHttpRequest")
-// 	postReq.Header.Set(HeaderName, token)
-// 	resp, err = app.Test(postReq)
-// }
+	postReq := httptest.NewRequest(fiber.MethodPost, "/", nil)
+	postReq.Header.Set("X-Requested-With", "XMLHttpRequest")
+	postReq.Header.Set(HeaderName, token)
+	resp, err = app.Test(postReq)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusOK, resp.StatusCode)
+}
 
 // go test -v -run=^$ -bench=Benchmark_Middleware_CSRF_Check -benchmem -count=4
 func Benchmark_Middleware_CSRF_Check(b *testing.B) {

middleware/healthcheck/config.go

@@ -18,18 +18,18 @@ type Config struct {
 	// the application is in a state where it can handle requests (e.g., the server is up and running).
 	//
 	// Optional. Default: func(c fiber.Ctx) bool { return true }
-	Probe HealthChecker
+	Probe func(fiber.Ctx) bool
 }
 
 const (
-	DefaultLivenessEndpoint  = "/livez"
-	DefaultReadinessEndpoint = "/readyz"
-	DefaultStartupEndpoint   = "/startupz"
+	LivenessEndpoint  = "/livez"
+	ReadinessEndpoint = "/readyz"
+	StartupEndpoint   = "/startupz"
 )
 
-func defaultProbe(fiber.Ctx) bool { return true }
+func defaultProbe(_ fiber.Ctx) bool { return true }
 
-func defaultConfigV3(config ...Config) Config {
+func defaultConfig(config ...Config) Config {
 	if len(config) < 1 {
 		return Config{
 			Probe: defaultProbe,

middleware/healthcheck/healthcheck.go

@@ -4,11 +4,8 @@ import (
 	"github.com/gofiber/fiber/v3"
 )
 
-// HealthChecker defines a function to check liveness or readiness of the application
-type HealthChecker func(fiber.Ctx) bool
-
-func NewHealthChecker(config ...Config) fiber.Handler {
-	cfg := defaultConfigV3(config...)
+func New(config ...Config) fiber.Handler {
+	cfg := defaultConfig(config...)
 
 	return func(c fiber.Ctx) error {
 		// Don't execute middleware if Next returns true

middleware/healthcheck/healthcheck_test.go

@@ -34,9 +34,9 @@ func Test_HealthCheck_Strict_Routing_Default(t *testing.T) {
 		StrictRouting: true,
 	})
 
-	app.Get(DefaultLivenessEndpoint, NewHealthChecker())
-	app.Get(DefaultReadinessEndpoint, NewHealthChecker())
-	app.Get(DefaultStartupEndpoint, NewHealthChecker())
+	app.Get(LivenessEndpoint, New())
+	app.Get(ReadinessEndpoint, New())
+	app.Get(StartupEndpoint, New())
 
 	shouldGiveOK(t, app, "/readyz")
 	shouldGiveOK(t, app, "/livez")
@@ -53,9 +53,9 @@ func Test_HealthCheck_Default(t *testing.T) {
 	t.Parallel()
 
 	app := fiber.New()
-	app.Get(DefaultLivenessEndpoint, NewHealthChecker())
-	app.Get(DefaultReadinessEndpoint, NewHealthChecker())
-	app.Get(DefaultStartupEndpoint, NewHealthChecker())
+	app.Get(LivenessEndpoint, New())
+	app.Get(ReadinessEndpoint, New())
+	app.Get(StartupEndpoint, New())
 
 	shouldGiveOK(t, app, "/readyz")
 	shouldGiveOK(t, app, "/livez")
@@ -73,12 +73,12 @@ func Test_HealthCheck_Custom(t *testing.T) {
 
 	app := fiber.New()
 	c1 := make(chan struct{}, 1)
-	app.Get("/live", NewHealthChecker(Config{
+	app.Get("/live", New(Config{
 		Probe: func(_ fiber.Ctx) bool {
 			return true
 		},
 	}))
-	app.Get("/ready", NewHealthChecker(Config{
+	app.Get("/ready", New(Config{
 		Probe: func(_ fiber.Ctx) bool {
 			select {
 			case <-c1:
@@ -88,7 +88,7 @@ func Test_HealthCheck_Custom(t *testing.T) {
 			}
 		},
 	}))
-	app.Get(DefaultStartupEndpoint, NewHealthChecker(Config{
+	app.Get(StartupEndpoint, New(Config{
 		Probe: func(_ fiber.Ctx) bool {
 			return false
 		},
@@ -123,12 +123,12 @@ func Test_HealthCheck_Custom_Nested(t *testing.T) {
 	app := fiber.New()
 
 	c1 := make(chan struct{}, 1)
-	app.Get("/probe/live", NewHealthChecker(Config{
+	app.Get("/probe/live", New(Config{
 		Probe: func(_ fiber.Ctx) bool {
 			return true
 		},
 	}))
-	app.Get("/probe/ready", NewHealthChecker(Config{
+	app.Get("/probe/ready", New(Config{
 		Probe: func(_ fiber.Ctx) bool {
 			select {
 			case <-c1:
@@ -164,15 +164,15 @@ func Test_HealthCheck_Next(t *testing.T) {
 
 	app := fiber.New()
 
-	checker := NewHealthChecker(Config{
+	checker := New(Config{
 		Next: func(_ fiber.Ctx) bool {
 			return true
 		},
 	})
 
-	app.Get(DefaultLivenessEndpoint, checker)
-	app.Get(DefaultReadinessEndpoint, checker)
-	app.Get(DefaultStartupEndpoint, checker)
+	app.Get(LivenessEndpoint, checker)
+	app.Get(ReadinessEndpoint, checker)
+	app.Get(StartupEndpoint, checker)
 
 	// This should give not found since there are no other handlers to execute
 	// so it's like the route isn't defined at all
@@ -184,9 +184,9 @@ func Test_HealthCheck_Next(t *testing.T) {
 func Benchmark_HealthCheck(b *testing.B) {
 	app := fiber.New()
 
-	app.Get(DefaultLivenessEndpoint, NewHealthChecker())
-	app.Get(DefaultReadinessEndpoint, NewHealthChecker())
-	app.Get(DefaultStartupEndpoint, NewHealthChecker())
+	app.Get(LivenessEndpoint, New())
+	app.Get(ReadinessEndpoint, New())
+	app.Get(StartupEndpoint, New())
 
 	h := app.Handler()
 	fctx := &fasthttp.RequestCtx{}
@@ -206,9 +206,9 @@ func Benchmark_HealthCheck(b *testing.B) {
 func Benchmark_HealthCheck_Parallel(b *testing.B) {
 	app := fiber.New()
 
-	app.Get(DefaultLivenessEndpoint, NewHealthChecker())
-	app.Get(DefaultReadinessEndpoint, NewHealthChecker())
-	app.Get(DefaultStartupEndpoint, NewHealthChecker())
+	app.Get(LivenessEndpoint, New())
+	app.Get(ReadinessEndpoint, New())
+	app.Get(StartupEndpoint, New())
 
 	h := app.Handler()
 

middleware/helmet/config.go

@@ -28,7 +28,7 @@ type Config struct {
 	ContentSecurityPolicy string
 
 	// ReferrerPolicy
-	// Optional. Default value "ReferrerPolicy".
+	// Optional. Default value "no-referrer".
 	ReferrerPolicy string
 
 	// Permissions-Policy

middleware/logger/config.go

@@ -10,16 +10,21 @@ import (
 
 // Config defines the config for middleware.
 type Config struct {
-	// Output is a writer where logs are written
+	// Stream is a writer where logs are written
 	//
 	// Default: os.Stdout
-	Output io.Writer
+	Stream io.Writer
 
 	// Next defines a function to skip this middleware when returned true.
 	//
 	// Optional. Default: nil
 	Next func(c fiber.Ctx) bool
 
+	// Skip is a function to determine if logging is skipped or written to Stream.
+	//
+	// Optional. Default: nil
+	Skip func(c fiber.Ctx) bool
+
 	// Done is a function that is called after the log string for a request is written to Output,
 	// and pass the log string as parameter.
 	//
@@ -45,9 +50,23 @@ type Config struct {
 
 	timeZoneLocation *time.Location
 
-	// Format defines the logging tags
+	// Format defines the logging format for the middleware.
 	//
-	// Optional. Default: [${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}
+	// You can customize the log output by defining a format string with placeholders
+	// such as: ${time}, ${ip}, ${status}, ${method}, ${path}, ${latency}, ${error}, etc.
+	// The full list of available placeholders can be found in 'tags.go' or at
+	// 'https://docs.gofiber.io/api/middleware/logger/#constants'.
+	//
+	// Fiber provides predefined logging formats that can be used directly:
+	//
+	//   - DefaultFormat    → Uses the default log format: "[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}"
+	//   - CommonFormat     → Uses the Apache Common Log Format (CLF): "${ip} - - [${time}] \"${method} ${url} ${protocol}\" ${status} ${bytesSent}\n"
+	//   - CombinedFormat   → Uses the Apache Combined Log Format: "${ip} - - [${time}] \"${method} ${url} ${protocol}\" ${status} ${bytesSent} \"${referer}\" \"${ua}\"\n"
+	//   - JSONFormat      → Uses the JSON log format: "{\"time\":\"${time}\",\"ip\":\"${ip}\",\"method\":\"${method}\",\"url\":\"${url}\",\"status\":${status},\"bytesSent\":${bytesSent}}\n"
+	//   - ECSFormat        → Uses the Elastic Common Schema (ECS) log format: {\"@timestamp\":\"${time}\",\"ecs\":{\"version\":\"1.6.0\"},\"client\":{\"ip\":\"${ip}\"},\"http\":{\"request\":{\"method\":\"${method}\",\"url\":\"${url}\",\"protocol\":\"${protocol}\"},\"response\":{\"status_code\":${status},\"body\":{\"bytes\":${bytesSent}}}},\"log\":{\"level\":\"INFO\",\"logger\":\"fiber\"},\"message\":\"${method} ${url} responded with ${status}\"}"
+	// If both `Format` and `CustomFormat` are provided, the `CustomFormat` will be used, and the `Format` field will be ignored.
+	// If no format is specified, the default format is used:
+	// "[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}"
 	Format string
 
 	// TimeFormat https://programming.guide/go/format-parse-string-time-date-example.html
@@ -98,20 +117,18 @@ type LogFunc func(output Buffer, c fiber.Ctx, data *Data, extraParam string) (in
 // ConfigDefault is the default config
 var ConfigDefault = Config{
 	Next:              nil,
+	Skip:              nil,
 	Done:              nil,
-	Format:            defaultFormat,
+	Format:            DefaultFormat,
 	TimeFormat:        "15:04:05",
 	TimeZone:          "Local",
 	TimeInterval:      500 * time.Millisecond,
-	Output:            os.Stdout,
+	Stream:            os.Stdout,
 	BeforeHandlerFunc: beforeHandlerFunc,
 	LoggerFunc:        defaultLoggerInstance,
 	enableColors:      true,
 }
 
-// default logging format for Fiber's default logger
-var defaultFormat = "[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}\n"
-
 // Helper function to set default values
 func configDefault(config ...Config) Config {
 	// Return default config if nothing provided
@@ -126,6 +143,9 @@ func configDefault(config ...Config) Config {
 	if cfg.Next == nil {
 		cfg.Next = ConfigDefault.Next
 	}
+	if cfg.Skip == nil {
+		cfg.Skip = ConfigDefault.Skip
+	}
 	if cfg.Done == nil {
 		cfg.Done = ConfigDefault.Done
 	}
@@ -141,8 +161,8 @@ func configDefault(config ...Config) Config {
 	if int(cfg.TimeInterval) <= 0 {
 		cfg.TimeInterval = ConfigDefault.TimeInterval
 	}
-	if cfg.Output == nil {
-		cfg.Output = ConfigDefault.Output
+	if cfg.Stream == nil {
+		cfg.Stream = ConfigDefault.Stream
 	}
 
 	if cfg.BeforeHandlerFunc == nil {
@@ -154,7 +174,7 @@ func configDefault(config ...Config) Config {
 	}
 
 	// Enable colors if no custom format or output is given
-	if !cfg.DisableColors && cfg.Output == ConfigDefault.Output {
+	if !cfg.DisableColors && cfg.Stream == ConfigDefault.Stream {
 		cfg.enableColors = true
 	}
 

middleware/logger/default_logger.go

@@ -15,6 +15,12 @@ import (
 
 // default logger for fiber
 func defaultLoggerInstance(c fiber.Ctx, data *Data, cfg Config) error {
+	// Check if Skip is defined and call it.
+	// Now, if Skip(c) == true, we SKIP logging:
+	if cfg.Skip != nil && cfg.Skip(c) {
+		return nil // Skip logging if Skip returns true
+	}
+
 	// Alias colors
 	colors := c.App().Config().ColorScheme
 
@@ -22,7 +28,7 @@ func defaultLoggerInstance(c fiber.Ctx, data *Data, cfg Config) error {
 	buf := bytebufferpool.Get()
 
 	// Default output when no custom Format or io.Writer is given
-	if cfg.Format == defaultFormat {
+	if cfg.Format == DefaultFormat {
 		// Format error if exist
 		formatErr := ""
 		if cfg.enableColors {
@@ -91,7 +97,7 @@ func defaultLoggerInstance(c fiber.Ctx, data *Data, cfg Config) error {
 		}
 
 		// Write buffer to output
-		writeLog(cfg.Output, buf.Bytes())
+		writeLog(cfg.Stream, buf.Bytes())
 
 		if cfg.Done != nil {
 			cfg.Done(c, buf.Bytes())
@@ -125,7 +131,7 @@ func defaultLoggerInstance(c fiber.Ctx, data *Data, cfg Config) error {
 		buf.WriteString(err.Error())
 	}
 
-	writeLog(cfg.Output, buf.Bytes())
+	writeLog(cfg.Stream, buf.Bytes())
 
 	if cfg.Done != nil {
 		cfg.Done(c, buf.Bytes())
@@ -141,9 +147,9 @@ func defaultLoggerInstance(c fiber.Ctx, data *Data, cfg Config) error {
 func beforeHandlerFunc(cfg Config) {
 	// If colors are enabled, check terminal compatibility
 	if cfg.enableColors {
-		cfg.Output = colorable.NewColorableStdout()
+		cfg.Stream = colorable.NewColorableStdout()
 		if os.Getenv("TERM") == "dumb" || os.Getenv("NO_COLOR") == "1" || (!isatty.IsTerminal(os.Stdout.Fd()) && !isatty.IsCygwinTerminal(os.Stdout.Fd())) {
-			cfg.Output = colorable.NewNonColorable(os.Stdout)
+			cfg.Stream = colorable.NewNonColorable(os.Stdout)
 		}
 	}
 }
@@ -160,7 +166,7 @@ func writeLog(w io.Writer, msg []byte) {
 		// Write error to output
 		if _, err := w.Write([]byte(err.Error())); err != nil {
 			// There is something wrong with the given io.Writer
-			_, _ = fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err) //nolint: errcheck // It is fine to ignore the error
+			_, _ = fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
 		}
 	}
 }

middleware/logger/format.go

@@ -0,0 +1,14 @@
+package logger
+
+const (
+	// Fiber's default logger
+	DefaultFormat = "[${time}] ${ip} ${status} - ${latency} ${method} ${path} ${error}\n"
+	// Apache Common Log Format (CLF)
+	CommonFormat = "${ip} - - [${time}] \"${method} ${url} ${protocol}\" ${status} ${bytesSent}\n"
+	// Apache Combined Log Format
+	CombinedFormat = "${ip} - - [${time}] \"${method} ${url} ${protocol}\" ${status} ${bytesSent} \"${referer}\" \"${ua}\"\n"
+	// JSON log formats
+	JSONFormat = "{\"time\":\"${time}\",\"ip\":\"${ip}\",\"method\":\"${method}\",\"url\":\"${url}\",\"status\":${status},\"bytesSent\":${bytesSent}}\n"
+	// Elastic Common Schema (ECS) Log Format
+	ECSFormat = "{\"@timestamp\":\"${time}\",\"ecs\":{\"version\":\"1.6.0\"},\"client\":{\"ip\":\"${ip}\"},\"http\":{\"request\":{\"method\":\"${method}\",\"url\":\"${url}\",\"protocol\":\"${protocol}\"},\"response\":{\"status_code\":${status},\"body\":{\"bytes\":${bytesSent}}}},\"log\":{\"level\":\"INFO\",\"logger\":\"fiber\"},\"message\":\"${method} ${url} responded with ${status}\"}\n"
+)

middleware/logger/logger.go

@@ -40,7 +40,6 @@ func New(config ...Config) fiber.Handler {
 			}
 		}()
 	}
-
 	// Set PID once
 	pid := strconv.Itoa(os.Getpid())
 

middleware/logger/logger_test.go

@@ -71,7 +71,7 @@ func Test_Logger(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${error}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	app.Get("/", func(_ fiber.Ctx) error {
@@ -94,7 +94,7 @@ func Test_Logger_locals(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${locals:demo}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	app.Get("/", func(c fiber.Ctx) error {
@@ -171,6 +171,147 @@ func Test_Logger_Done(t *testing.T) {
 	require.Positive(t, buf.Len(), 0)
 }
 
+// Test_Logger_Filter tests the Filter functionality of the logger middleware.
+// It verifies that logs are written or skipped based on the filter condition.
+func Test_Logger_Filter(t *testing.T) {
+	t.Parallel()
+
+	t.Run("Test Not Found", func(t *testing.T) {
+		t.Parallel()
+		app := fiber.New()
+
+		logOutput := bytes.Buffer{}
+
+		// Return true to skip logging for all requests != 404
+		app.Use(New(Config{
+			Skip: func(c fiber.Ctx) bool {
+				return c.Response().StatusCode() != fiber.StatusNotFound
+			},
+			Stream: &logOutput,
+		}))
+
+		resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/nonexistent", nil))
+		require.NoError(t, err)
+		require.Equal(t, fiber.StatusNotFound, resp.StatusCode)
+
+		// Expect logs for the 404 request
+		require.Contains(t, logOutput.String(), "404")
+	})
+
+	t.Run("Test OK", func(t *testing.T) {
+		t.Parallel()
+		app := fiber.New()
+
+		logOutput := bytes.Buffer{}
+
+		// Return true to skip logging for all requests == 200
+		app.Use(New(Config{
+			Skip: func(c fiber.Ctx) bool {
+				return c.Response().StatusCode() == fiber.StatusOK
+			},
+			Stream: &logOutput,
+		}))
+
+		app.Get("/", func(c fiber.Ctx) error {
+			return c.SendStatus(fiber.StatusOK)
+		})
+
+		resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", nil))
+		require.NoError(t, err)
+		require.Equal(t, fiber.StatusOK, resp.StatusCode)
+
+		// We skip logging for status == 200, so "200" should not appear
+		require.NotContains(t, logOutput.String(), "200")
+	})
+
+	t.Run("Always Skip", func(t *testing.T) {
+		t.Parallel()
+		app := fiber.New()
+
+		logOutput := bytes.Buffer{}
+
+		// Filter always returns true => skip all logs
+		app.Use(New(Config{
+			Skip: func(_ fiber.Ctx) bool {
+				return true // always skip
+			},
+			Stream: &logOutput,
+		}))
+
+		app.Get("/something", func(c fiber.Ctx) error {
+			return c.Status(fiber.StatusTeapot).SendString("I'm a teapot")
+		})
+
+		_, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/something", nil))
+		require.NoError(t, err)
+
+		// Expect NO logs
+		require.Empty(t, logOutput.String())
+	})
+
+	t.Run("Never Skip", func(t *testing.T) {
+		t.Parallel()
+		app := fiber.New()
+
+		logOutput := bytes.Buffer{}
+
+		// Filter always returns false => never skip logs
+		app.Use(New(Config{
+			Skip: func(_ fiber.Ctx) bool {
+				return false // never skip
+			},
+			Stream: &logOutput,
+		}))
+
+		app.Get("/always", func(c fiber.Ctx) error {
+			return c.Status(fiber.StatusTeapot).SendString("Teapot again")
+		})
+
+		_, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/always", nil))
+		require.NoError(t, err)
+
+		// Expect some logging - check any substring
+		require.Contains(t, logOutput.String(), strconv.Itoa(fiber.StatusTeapot))
+	})
+
+	t.Run("Skip /healthz", func(t *testing.T) {
+		t.Parallel()
+		app := fiber.New()
+
+		logOutput := bytes.Buffer{}
+
+		// Filter returns true (skip logs) if the request path is /healthz
+		app.Use(New(Config{
+			Skip: func(c fiber.Ctx) bool {
+				return c.Path() == "/healthz"
+			},
+			Stream: &logOutput,
+		}))
+
+		// Normal route
+		app.Get("/", func(c fiber.Ctx) error {
+			return c.SendString("Hello World!")
+		})
+		// Health route
+		app.Get("/healthz", func(c fiber.Ctx) error {
+			return c.SendString("OK")
+		})
+
+		// Request to "/" -> should be logged
+		_, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", nil))
+		require.NoError(t, err)
+		require.Contains(t, logOutput.String(), "200")
+
+		// Reset output buffer
+		logOutput.Reset()
+
+		// Request to "/healthz" -> should be skipped
+		_, err = app.Test(httptest.NewRequest(fiber.MethodGet, "/healthz", nil))
+		require.NoError(t, err)
+		require.Empty(t, logOutput.String())
+	})
+}
+
 // go test -run Test_Logger_ErrorTimeZone
 func Test_Logger_ErrorTimeZone(t *testing.T) {
 	t.Parallel()
@@ -234,7 +375,7 @@ func Test_Logger_LoggerToWriter(t *testing.T) {
 
 			app.Use("/"+level, New(Config{
 				Format: "${error}",
-				Output: LoggerToWriter(logger, tc.
+				Stream: LoggerToWriter(logger, tc.
 					level),
 			}))
 
@@ -276,7 +417,7 @@ func Test_Logger_ErrorOutput_WithoutColor(t *testing.T) {
 	app := fiber.New()
 
 	app.Use(New(Config{
-		Output:        o,
+		Stream:        o,
 		DisableColors: true,
 	}))
 
@@ -293,7 +434,7 @@ func Test_Logger_ErrorOutput(t *testing.T) {
 	app := fiber.New()
 
 	app.Use(New(Config{
-		Output: o,
+		Stream: o,
 	}))
 
 	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", nil))
@@ -312,7 +453,7 @@ func Test_Logger_All(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${pid}${reqHeaders}${referer}${scheme}${protocol}${ip}${ips}${host}${url}${ua}${body}${route}${black}${red}${green}${yellow}${blue}${magenta}${cyan}${white}${reset}${error}${reqHeader:test}${query:test}${form:test}${cookie:test}${non}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	// Alias colors
@@ -326,6 +467,124 @@ func Test_Logger_All(t *testing.T) {
 	require.Equal(t, expected, buf.String())
 }
 
+func Test_Logger_CLF_Format(t *testing.T) {
+	t.Parallel()
+	buf := bytebufferpool.Get()
+	defer bytebufferpool.Put(buf)
+
+	app := fiber.New()
+
+	app.Use(New(Config{
+		Format: CommonFormat,
+		Stream: buf,
+	}))
+
+	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/?foo=bar", nil))
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusNotFound, resp.StatusCode)
+
+	expected := fmt.Sprintf("0.0.0.0 - - [%s] \"%s %s %s\" %d %d\n",
+		time.Now().Format("15:04:05"),
+		fiber.MethodGet, "/?foo=bar", "HTTP/1.1",
+		fiber.StatusNotFound,
+		0)
+	logResponse := buf.String()
+	require.Equal(t, expected, logResponse)
+}
+
+func Test_Logger_Combined_CLF_Format(t *testing.T) {
+	t.Parallel()
+	buf := bytebufferpool.Get()
+	defer bytebufferpool.Put(buf)
+
+	app := fiber.New()
+
+	app.Use(New(Config{
+		Format: CombinedFormat,
+		Stream: buf,
+	}))
+	const expectedUA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"
+	const expectedReferer = "http://example.com"
+	req := httptest.NewRequest(fiber.MethodGet, "/?foo=bar", nil)
+	req.Header.Set("Referer", expectedReferer)
+	req.Header.Set("User-Agent", expectedUA)
+	resp, err := app.Test(req)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusNotFound, resp.StatusCode)
+
+	expected := fmt.Sprintf("0.0.0.0 - - [%s] %q %d %d %q %q\n",
+		time.Now().Format("15:04:05"),
+		fmt.Sprintf("%s %s %s", fiber.MethodGet, "/?foo=bar", "HTTP/1.1"),
+		fiber.StatusNotFound,
+		0,
+		expectedReferer,
+		expectedUA)
+	logResponse := buf.String()
+	require.Equal(t, expected, logResponse)
+}
+
+func Test_Logger_Json_Format(t *testing.T) {
+	t.Parallel()
+	buf := bytebufferpool.Get()
+	defer bytebufferpool.Put(buf)
+
+	app := fiber.New()
+
+	app.Use(New(Config{
+		Format: JSONFormat,
+		Stream: buf,
+	}))
+
+	req := httptest.NewRequest(fiber.MethodGet, "/?foo=bar", nil)
+	resp, err := app.Test(req)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusNotFound, resp.StatusCode)
+
+	expected := fmt.Sprintf(
+		"{\"time\":%q,\"ip\":%q,\"method\":%q,\"url\":%q,\"status\":%d,\"bytesSent\":%d}\n",
+		time.Now().Format("15:04:05"),
+		"0.0.0.0",
+		fiber.MethodGet,
+		"/?foo=bar",
+		fiber.StatusNotFound,
+		0,
+	)
+	logResponse := buf.String()
+	require.Equal(t, expected, logResponse)
+}
+
+func Test_Logger_ECS_Format(t *testing.T) {
+	t.Parallel()
+	buf := bytebufferpool.Get()
+	defer bytebufferpool.Put(buf)
+
+	app := fiber.New()
+
+	app.Use(New(Config{
+		Format: ECSFormat,
+		Stream: buf,
+	}))
+
+	req := httptest.NewRequest(fiber.MethodGet, "/?foo=bar", nil)
+	resp, err := app.Test(req)
+	require.NoError(t, err)
+	require.Equal(t, fiber.StatusNotFound, resp.StatusCode)
+
+	expected := fmt.Sprintf(
+		"{\"@timestamp\":%q,\"ecs\":{\"version\":\"1.6.0\"},\"client\":{\"ip\":%q},\"http\":{\"request\":{\"method\":%q,\"url\":%q,\"protocol\":%q},\"response\":{\"status_code\":%d,\"body\":{\"bytes\":%d}}},\"log\":{\"level\":\"INFO\",\"logger\":\"fiber\"},\"message\":%q}\n",
+		time.Now().Format("15:04:05"),
+		"0.0.0.0",
+		fiber.MethodGet,
+		"/?foo=bar",
+		"HTTP/1.1",
+		fiber.StatusNotFound,
+		0,
+		fmt.Sprintf("%s %s responded with %d", fiber.MethodGet, "/?foo=bar", fiber.StatusNotFound),
+	)
+	logResponse := buf.String()
+	require.Equal(t, expected, logResponse)
+}
+
 func getLatencyTimeUnits() []struct {
 	unit string
 	div  time.Duration
@@ -358,7 +617,7 @@ func Test_Logger_WithLatency(t *testing.T) {
 	app := fiber.New()
 
 	logger := New(Config{
-		Output: buff,
+		Stream: buff,
 		Format: "${latency}",
 	})
 	app.Use(logger)
@@ -403,7 +662,7 @@ func Test_Logger_WithLatency_DefaultFormat(t *testing.T) {
 	app := fiber.New()
 
 	logger := New(Config{
-		Output: buff,
+		Stream: buff,
 	})
 	app.Use(logger)
 
@@ -453,7 +712,7 @@ func Test_Query_Params(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${queryParams}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/?foo=bar&baz=moz", nil))
@@ -474,7 +733,7 @@ func Test_Response_Body(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${resBody}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	app.Get("/", func(c fiber.Ctx) error {
@@ -508,7 +767,7 @@ func Test_Request_Body(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${bytesReceived} ${bytesSent} ${status}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	app.Post("/", func(c fiber.Ctx) error {
@@ -536,7 +795,7 @@ func Test_Logger_AppendUint(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${bytesReceived} ${bytesSent} ${status}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	app.Get("/", func(c fiber.Ctx) error {
@@ -611,7 +870,7 @@ func Test_Response_Header(t *testing.T) {
 	}))
 	app.Use(New(Config{
 		Format: "${respHeader:X-Request-ID}",
-		Output: buf,
+		Stream: buf,
 	}))
 	app.Get("/", func(c fiber.Ctx) error {
 		return c.SendString("Hello fiber!")
@@ -634,7 +893,7 @@ func Test_Req_Header(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${reqHeader:test}",
-		Output: buf,
+		Stream: buf,
 	}))
 	app.Get("/", func(c fiber.Ctx) error {
 		return c.SendString("Hello fiber!")
@@ -658,7 +917,7 @@ func Test_ReqHeader_Header(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${reqHeader:test}",
-		Output: buf,
+		Stream: buf,
 	}))
 	app.Get("/", func(c fiber.Ctx) error {
 		return c.SendString("Hello fiber!")
@@ -689,7 +948,7 @@ func Test_CustomTags(t *testing.T) {
 				return output.WriteString(customTag)
 			},
 		},
-		Output: buf,
+		Stream: buf,
 	}))
 	app.Get("/", func(c fiber.Ctx) error {
 		return c.SendString("Hello fiber!")
@@ -713,7 +972,7 @@ func Test_Logger_ByteSent_Streaming(t *testing.T) {
 
 	app.Use(New(Config{
 		Format: "${bytesReceived} ${bytesSent} ${status}",
-		Output: buf,
+		Stream: buf,
 	}))
 
 	app.Get("/", func(c fiber.Ctx) error {
@@ -724,7 +983,7 @@ func Test_Logger_ByteSent_Streaming(t *testing.T) {
 			for {
 				i++
 				msg := fmt.Sprintf("%d - the time is %v", i, time.Now())
-				fmt.Fprintf(w, "data: Message: %s\n\n", msg) //nolint:errcheck // ignore error
+				fmt.Fprintf(w, "data: Message: %s\n\n", msg)
 				err := w.Flush()
 				if err != nil {
 					break
@@ -759,7 +1018,7 @@ func Test_Logger_EnableColors(t *testing.T) {
 	app := fiber.New()
 
 	app.Use(New(Config{
-		Output: o,
+		Stream: o,
 	}))
 
 	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", nil))
@@ -782,7 +1041,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${bytesReceived} ${bytesSent} ${status}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Set("test", "test")
@@ -794,7 +1053,7 @@ func Benchmark_Logger(b *testing.B) {
 	b.Run("DefaultFormat", func(bb *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Hello, World!")
@@ -805,7 +1064,7 @@ func Benchmark_Logger(b *testing.B) {
 	b.Run("DefaultFormatDisableColors", func(bb *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
-			Output:        io.Discard,
+			Stream:        io.Discard,
 			DisableColors: true,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
@@ -819,7 +1078,7 @@ func Benchmark_Logger(b *testing.B) {
 		logger := fiberlog.DefaultLogger()
 		logger.SetOutput(io.Discard)
 		app.Use(New(Config{
-			Output: LoggerToWriter(logger, fiberlog.LevelDebug),
+			Stream: LoggerToWriter(logger, fiberlog.LevelDebug),
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Hello, World!")
@@ -831,7 +1090,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${bytesReceived} ${bytesSent} ${status} ${reqHeader:test}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Set("test", "test")
@@ -844,7 +1103,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${locals:demo}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Locals("demo", "johndoe")
@@ -857,7 +1116,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${locals:demo}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/int", func(c fiber.Ctx) error {
 			c.Locals("demo", 55)
@@ -874,7 +1133,7 @@ func Benchmark_Logger(b *testing.B) {
 					io.Discard.Write(logString) //nolint:errcheck // ignore error
 				}
 			},
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/logging", func(ctx fiber.Ctx) error {
 			return ctx.SendStatus(fiber.StatusOK)
@@ -886,7 +1145,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${pid}${reqHeaders}${referer}${scheme}${protocol}${ip}${ips}${host}${url}${ua}${body}${route}${black}${red}${green}${yellow}${blue}${magenta}${cyan}${white}${reset}${error}${reqHeader:test}${query:test}${form:test}${cookie:test}${non}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Hello, World!")
@@ -898,7 +1157,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${bytesReceived} ${bytesSent} ${status}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Set("Connection", "keep-alive")
@@ -908,7 +1167,7 @@ func Benchmark_Logger(b *testing.B) {
 				for {
 					i++
 					msg := fmt.Sprintf("%d - the time is %v", i, time.Now())
-					fmt.Fprintf(w, "data: Message: %s\n\n", msg) //nolint:errcheck // ignore error
+					fmt.Fprintf(w, "data: Message: %s\n\n", msg)
 					err := w.Flush()
 					if err != nil {
 						break
@@ -927,7 +1186,7 @@ func Benchmark_Logger(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${resBody}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Sample response body")
@@ -950,7 +1209,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${bytesReceived} ${bytesSent} ${status}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Set("test", "test")
@@ -962,7 +1221,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 	b.Run("DefaultFormat", func(bb *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Hello, World!")
@@ -975,7 +1234,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		logger := fiberlog.DefaultLogger()
 		logger.SetOutput(io.Discard)
 		app.Use(New(Config{
-			Output: LoggerToWriter(logger, fiberlog.LevelDebug),
+			Stream: LoggerToWriter(logger, fiberlog.LevelDebug),
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Hello, World!")
@@ -986,7 +1245,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 	b.Run("DefaultFormatDisableColors", func(bb *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
-			Output:        io.Discard,
+			Stream:        io.Discard,
 			DisableColors: true,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
@@ -999,7 +1258,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${bytesReceived} ${bytesSent} ${status} ${reqHeader:test}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Set("test", "test")
@@ -1012,7 +1271,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${locals:demo}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Locals("demo", "johndoe")
@@ -1025,7 +1284,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${locals:demo}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/int", func(c fiber.Ctx) error {
 			c.Locals("demo", 55)
@@ -1042,7 +1301,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 					io.Discard.Write(logString) //nolint:errcheck // ignore error
 				}
 			},
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/logging", func(ctx fiber.Ctx) error {
 			return ctx.SendStatus(fiber.StatusOK)
@@ -1054,7 +1313,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${pid}${reqHeaders}${referer}${scheme}${protocol}${ip}${ips}${host}${url}${ua}${body}${route}${black}${red}${green}${yellow}${blue}${magenta}${cyan}${white}${reset}${error}${reqHeader:test}${query:test}${form:test}${cookie:test}${non}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Hello, World!")
@@ -1066,7 +1325,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${bytesReceived} ${bytesSent} ${status}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			c.Set("Connection", "keep-alive")
@@ -1076,7 +1335,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 				for {
 					i++
 					msg := fmt.Sprintf("%d - the time is %v", i, time.Now())
-					fmt.Fprintf(w, "data: Message: %s\n\n", msg) //nolint:errcheck // ignore error
+					fmt.Fprintf(w, "data: Message: %s\n\n", msg)
 					err := w.Flush()
 					if err != nil {
 						break
@@ -1095,7 +1354,7 @@ func Benchmark_Logger_Parallel(b *testing.B) {
 		app := fiber.New()
 		app.Use(New(Config{
 			Format: "${resBody}",
-			Output: io.Discard,
+			Stream: io.Discard,
 		}))
 		app.Get("/", func(c fiber.Ctx) error {
 			return c.SendString("Sample response body")

middleware/proxy/proxy_test.go

@@ -506,7 +506,10 @@ func Test_Proxy_Do_WithRealURL(t *testing.T) {
 		return Do(c, "https://www.google.com")
 	})
 
-	resp, err1 := app.Test(httptest.NewRequest(fiber.MethodGet, "/test", nil))
+	resp, err1 := app.Test(httptest.NewRequest(fiber.MethodGet, "/test", nil), fiber.TestConfig{
+		Timeout:       2 * time.Second,
+		FailOnTimeout: true,
+	})
 	require.NoError(t, err1)
 	require.Equal(t, fiber.StatusOK, resp.StatusCode)
 	require.Equal(t, "/test", resp.Request.URL.String())
@@ -523,7 +526,10 @@ func Test_Proxy_Do_WithRedirect(t *testing.T) {
 		return Do(c, "https://google.com")
 	})
 
-	resp, err1 := app.Test(httptest.NewRequest(fiber.MethodGet, "/test", nil))
+	resp, err1 := app.Test(httptest.NewRequest(fiber.MethodGet, "/test", nil), fiber.TestConfig{
+		Timeout:       2 * time.Second,
+		FailOnTimeout: true,
+	})
 	require.NoError(t, err1)
 	body, err := io.ReadAll(resp.Body)
 	require.NoError(t, err)
@@ -558,7 +564,10 @@ func Test_Proxy_DoRedirects_TooManyRedirects(t *testing.T) {
 		return DoRedirects(c, "http://google.com", 0)
 	})
 
-	resp, err1 := app.Test(httptest.NewRequest(fiber.MethodGet, "/test", nil))
+	resp, err1 := app.Test(httptest.NewRequest(fiber.MethodGet, "/test", nil), fiber.TestConfig{
+		Timeout:       2 * time.Second,
+		FailOnTimeout: true,
+	})
 	require.NoError(t, err1)
 	body, err := io.ReadAll(resp.Body)
 	require.NoError(t, err)

middleware/static/static.go

@@ -66,6 +66,7 @@ func New(root string, cfg ...Config) fiber.Handler {
 				AcceptByteRange:        config.ByteRange,
 				Compress:               config.Compress,
 				CompressBrotli:         config.Compress, // Brotli compression won't work without this
+				CompressZstd:           config.Compress, // Zstd compression won't work without this
 				CompressedFileSuffixes: c.App().Config().CompressedFileSuffixes,
 				CacheDuration:          config.CacheDuration,
 				SkipCache:              config.CacheDuration < 0,

mount.go

@@ -55,7 +55,7 @@ func (app *App) mount(prefix string, subApp *App) Router {
 
 	// register mounted group
 	mountGroup := &Group{Prefix: prefix, app: subApp}
-	app.register([]string{methodUse}, prefix, mountGroup, nil)
+	app.register([]string{methodUse}, prefix, mountGroup)
 
 	// Execute onMount hooks
 	if err := subApp.hooks.executeOnMountHooks(app); err != nil {
@@ -85,7 +85,7 @@ func (grp *Group) mount(prefix string, subApp *App) Router {
 
 	// register mounted group
 	mountGroup := &Group{Prefix: groupPath, app: subApp}
-	grp.app.register([]string{methodUse}, groupPath, mountGroup, nil)
+	grp.app.register([]string{methodUse}, groupPath, mountGroup)
 
 	// Execute onMount hooks
 	if err := subApp.hooks.executeOnMountHooks(grp.app); err != nil {

path.go

@@ -7,9 +7,11 @@
 package fiber
 
 import (
+	"bytes"
 	"regexp"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 	"unicode"
 
@@ -25,6 +27,12 @@ type routeParser struct {
 	plusCount     int             // number of plus parameters, used internally to give the plus parameter its number
 }
 
+var routerParserPool = &sync.Pool{
+	New: func() any {
+		return &routeParser{}
+	},
+}
+
 // routeSegment holds the segment metadata
 type routeSegment struct {
 	// const information
@@ -115,18 +123,6 @@ var (
 	parameterDelimiterChars = append([]byte{paramStarterChar, escapeChar}, routeDelimiter...)
 	// list of chars to find the end of a parameter
 	parameterEndChars = append([]byte{optionalParam}, parameterDelimiterChars...)
-	// list of parameter constraint start
-	parameterConstraintStartChars = []byte{paramConstraintStart}
-	// list of parameter constraint end
-	parameterConstraintEndChars = []byte{paramConstraintEnd}
-	// list of parameter separator
-	parameterConstraintSeparatorChars = []byte{paramConstraintSeparator}
-	// list of parameter constraint data start
-	parameterConstraintDataStartChars = []byte{paramConstraintDataStart}
-	// list of parameter constraint data end
-	parameterConstraintDataEndChars = []byte{paramConstraintDataEnd}
-	// list of parameter constraint data separator
-	parameterConstraintDataSeparatorChars = []byte{paramConstraintDataSeparator}
 )
 
 // RoutePatternMatch checks if a given path matches a Fiber route pattern.
@@ -152,11 +148,11 @@ func RoutePatternMatch(path, pattern string, cfg ...Config) bool {
 		pattern = "/" + pattern
 	}
 
-	patternPretty := pattern
+	patternPretty := []byte(pattern)
 
 	// Case-sensitive routing, all to lowercase
 	if !config.CaseSensitive {
-		patternPretty = utils.ToLower(patternPretty)
+		patternPretty = utils.ToLowerBytes(patternPretty)
 		path = utils.ToLower(path)
 	}
 	// Strict routing, remove trailing slashes
@@ -164,12 +160,15 @@ func RoutePatternMatch(path, pattern string, cfg ...Config) bool {
 		patternPretty = utils.TrimRight(patternPretty, '/')
 	}
 
-	parser := parseRoute(patternPretty)
+	parser, _ := routerParserPool.Get().(*routeParser) //nolint:errcheck // only contains routeParser
+	parser.reset()
+	parser.parseRoute(string(patternPretty))
+	defer routerParserPool.Put(parser)
 
-	if patternPretty == "/" && path == "/" {
+	if string(patternPretty) == "/" && path == "/" {
 		return true
 		// '*' wildcard matches any path
-	} else if patternPretty == "/*" {
+	} else if string(patternPretty) == "/*" {
 		return true
 	}
 
@@ -180,42 +179,47 @@ func RoutePatternMatch(path, pattern string, cfg ...Config) bool {
 		}
 	}
 	// Check for a simple match
-	patternPretty = RemoveEscapeChar(patternPretty)
-	if len(patternPretty) == len(path) && patternPretty == path {
-		return true
-	}
-	// No match
-	return false
+	patternPretty = RemoveEscapeCharBytes(patternPretty)
+
+	return string(patternPretty) == path
+}
+
+func (parser *routeParser) reset() {
+	parser.segs = parser.segs[:0]
+	parser.params = parser.params[:0]
+	parser.wildCardCount = 0
+	parser.plusCount = 0
 }
 
 // parseRoute analyzes the route and divides it into segments for constant areas and parameters,
 // this information is needed later when assigning the requests to the declared routes
-func parseRoute(pattern string, customConstraints ...CustomConstraint) routeParser {
-	parser := routeParser{}
-	part := ""
+func (parser *routeParser) parseRoute(pattern string, customConstraints ...CustomConstraint) {
+	var n int
+	var seg *routeSegment
 	for len(pattern) > 0 {
 		nextParamPosition := findNextParamPosition(pattern)
 		// handle the parameter part
 		if nextParamPosition == 0 {
-			processedPart, seg := parser.analyseParameterPart(pattern, customConstraints...)
-			parser.params, parser.segs, part = append(parser.params, seg.ParamName), append(parser.segs, seg), processedPart
+			n, seg = parser.analyseParameterPart(pattern, customConstraints...)
+			parser.params, parser.segs = append(parser.params, seg.ParamName), append(parser.segs, seg)
 		} else {
-			processedPart, seg := parser.analyseConstantPart(pattern, nextParamPosition)
-			parser.segs, part = append(parser.segs, seg), processedPart
+			n, seg = parser.analyseConstantPart(pattern, nextParamPosition)
+			parser.segs = append(parser.segs, seg)
 		}
-
-		// reduce the pattern by the processed parts
-		if len(part) == len(pattern) {
-			break
-		}
-		pattern = pattern[len(part):]
+		pattern = pattern[n:]
 	}
 	// mark last segment
 	if len(parser.segs) > 0 {
 		parser.segs[len(parser.segs)-1].IsLast = true
 	}
 	parser.segs = addParameterMetaInfo(parser.segs)
+}
 
+// parseRoute analyzes the route and divides it into segments for constant areas and parameters,
+// this information is needed later when assigning the requests to the declared routes
+func parseRoute(pattern string, customConstraints ...CustomConstraint) routeParser {
+	parser := routeParser{}
+	parser.parseRoute(pattern, customConstraints...)
 	return parser
 }
 
@@ -283,7 +287,7 @@ func findNextParamPosition(pattern string) int {
 }
 
 // analyseConstantPart find the end of the constant part and create the route segment
-func (*routeParser) analyseConstantPart(pattern string, nextParamPosition int) (string, *routeSegment) {
+func (*routeParser) analyseConstantPart(pattern string, nextParamPosition int) (int, *routeSegment) {
 	// handle the constant part
 	processedPart := pattern
 	if nextParamPosition != -1 {
@@ -291,14 +295,14 @@ func (*routeParser) analyseConstantPart(pattern string, nextParamPosition int) (
 		processedPart = pattern[:nextParamPosition]
 	}
 	constPart := RemoveEscapeChar(processedPart)
-	return processedPart, &routeSegment{
+	return len(processedPart), &routeSegment{
 		Const:  constPart,
 		Length: len(constPart),
 	}
 }
 
 // analyseParameterPart find the parameter end and create the route segment
-func (routeParser *routeParser) analyseParameterPart(pattern string, customConstraints ...CustomConstraint) (string, *routeSegment) {
+func (parser *routeParser) analyseParameterPart(pattern string, customConstraints ...CustomConstraint) (int, *routeSegment) {
 	isWildCard := pattern[0] == wildcardParam
 	isPlusParam := pattern[0] == plusParam
 
@@ -317,18 +321,19 @@ func (routeParser *routeParser) analyseParameterPart(pattern string, customConst
 		parameterEndPosition = 0
 	case parameterEndPosition == -1:
 		parameterEndPosition = len(pattern) - 1
-	case !isInCharset(pattern[parameterEndPosition+1], parameterDelimiterChars):
+	case bytes.IndexByte(parameterDelimiterChars, pattern[parameterEndPosition+1]) == -1:
 		parameterEndPosition++
 	}
 
 	// find constraint part if exists in the parameter part and remove it
 	if parameterEndPosition > 0 {
-		parameterConstraintStart = findNextNonEscapedCharsetPosition(pattern[0:parameterEndPosition], parameterConstraintStartChars)
-		parameterConstraintEnd = findLastCharsetPosition(pattern[0:parameterEndPosition+1], parameterConstraintEndChars)
+		parameterConstraintStart = findNextNonEscapedCharPosition(pattern[:parameterEndPosition], paramConstraintStart)
+		parameterConstraintEnd = strings.LastIndexByte(pattern[:parameterEndPosition+1], paramConstraintEnd)
 	}
 
 	// cut params part
 	processedPart := pattern[0 : parameterEndPosition+1]
+	n := parameterEndPosition + 1
 	paramName := RemoveEscapeChar(GetTrimmedParam(processedPart))
 
 	// Check has constraint
@@ -336,12 +341,12 @@ func (routeParser *routeParser) analyseParameterPart(pattern string, customConst
 
 	if hasConstraint := parameterConstraintStart != -1 && parameterConstraintEnd != -1; hasConstraint {
 		constraintString := pattern[parameterConstraintStart+1 : parameterConstraintEnd]
-		userConstraints := splitNonEscaped(constraintString, string(parameterConstraintSeparatorChars))
+		userConstraints := splitNonEscaped(constraintString, paramConstraintSeparator)
 		constraints = make([]*Constraint, 0, len(userConstraints))
 
 		for _, c := range userConstraints {
-			start := findNextNonEscapedCharsetPosition(c, parameterConstraintDataStartChars)
-			end := findLastCharsetPosition(c, parameterConstraintDataEndChars)
+			start := findNextNonEscapedCharPosition(c, paramConstraintDataStart)
+			end := strings.LastIndexByte(c, paramConstraintDataEnd)
 
 			// Assign constraint
 			if start != -1 && end != -1 {
@@ -353,7 +358,7 @@ func (routeParser *routeParser) analyseParameterPart(pattern string, customConst
 
 				// remove escapes from data
 				if constraint.ID != regexConstraint {
-					constraint.Data = splitNonEscaped(c[start+1:end], string(parameterConstraintDataSeparatorChars))
+					constraint.Data = splitNonEscaped(c[start+1:end], paramConstraintDataSeparator)
 					if len(constraint.Data) == 1 {
 						constraint.Data[0] = RemoveEscapeChar(constraint.Data[0])
 					} else if len(constraint.Data) == 2 { // This is fine, we simply expect two parts
@@ -384,11 +389,11 @@ func (routeParser *routeParser) analyseParameterPart(pattern string, customConst
 
 	// add access iterator to wildcard and plus
 	if isWildCard {
-		routeParser.wildCardCount++
-		paramName += strconv.Itoa(routeParser.wildCardCount)
+		parser.wildCardCount++
+		paramName += strconv.Itoa(parser.wildCardCount)
 	} else if isPlusParam {
-		routeParser.plusCount++
-		paramName += strconv.Itoa(routeParser.plusCount)
+		parser.plusCount++
+		paramName += strconv.Itoa(parser.plusCount)
 	}
 
 	segment := &routeSegment{
@@ -402,17 +407,7 @@ func (routeParser *routeParser) analyseParameterPart(pattern string, customConst
 		segment.Constraints = constraints
 	}
 
-	return processedPart, segment
-}
-
-// isInCharset check is the given character in the charset list
-func isInCharset(searchChar byte, charset []byte) bool {
-	for _, char := range charset {
-		if char == searchChar {
-			return true
-		}
-	}
-	return false
+	return n, segment
 }
 
 // findNextCharsetPosition search the next char position from the charset
@@ -427,23 +422,11 @@ func findNextCharsetPosition(search string, charset []byte) int {
 	return nextPosition
 }
 
-// findLastCharsetPosition search the last char position from the charset
-func findLastCharsetPosition(search string, charset []byte) int {
-	lastPosition := -1
-	for _, char := range charset {
-		if pos := strings.LastIndexByte(search, char); pos != -1 && (pos < lastPosition || lastPosition == -1) {
-			lastPosition = pos
-		}
-	}
-
-	return lastPosition
-}
-
-// findNextCharsetPositionConstraint search the next char position from the charset
+// findNextCharsetPositionConstraint searches the next char position from the charset
 // unlike findNextCharsetPosition, it takes care of constraint start-end chars to parse route pattern
 func findNextCharsetPositionConstraint(search string, charset []byte) int {
-	constraintStart := findNextNonEscapedCharsetPosition(search, parameterConstraintStartChars)
-	constraintEnd := findNextNonEscapedCharsetPosition(search, parameterConstraintEndChars)
+	constraintStart := findNextNonEscapedCharPosition(search, paramConstraintStart)
+	constraintEnd := findNextNonEscapedCharPosition(search, paramConstraintEnd)
 	nextPosition := -1
 
 	for _, char := range charset {
@@ -459,7 +442,7 @@ func findNextCharsetPositionConstraint(search string, charset []byte) int {
 	return nextPosition
 }
 
-// findNextNonEscapedCharsetPosition search the next char position from the charset and skip the escaped characters
+// findNextNonEscapedCharsetPosition searches the next char position from the charset and skips the escaped characters
 func findNextNonEscapedCharsetPosition(search string, charset []byte) int {
 	pos := findNextCharsetPosition(search, charset)
 	for pos > 0 && search[pos-1] == escapeChar {
@@ -478,25 +461,35 @@ func findNextNonEscapedCharsetPosition(search string, charset []byte) int {
 	return pos
 }
 
+// findNextNonEscapedCharPosition searches the next char position and skips the escaped characters
+func findNextNonEscapedCharPosition(search string, char byte) int {
+	for i := 0; i < len(search); i++ {
+		if search[i] == char && (i == 0 || search[i-1] != escapeChar) {
+			return i
+		}
+	}
+	return -1
+}
+
 // splitNonEscaped slices s into all substrings separated by sep and returns a slice of the substrings between those separators
 // This function also takes a care of escape char when splitting.
-func splitNonEscaped(s, sep string) []string {
+func splitNonEscaped(s string, sep byte) []string {
 	var result []string
-	i := findNextNonEscapedCharsetPosition(s, []byte(sep))
+	i := findNextNonEscapedCharPosition(s, sep)
 
 	for i > -1 {
 		result = append(result, s[:i])
-		s = s[i+len(sep):]
-		i = findNextNonEscapedCharsetPosition(s, []byte(sep))
+		s = s[i+1:]
+		i = findNextNonEscapedCharPosition(s, sep)
 	}
 
 	return append(result, s)
 }
 
 // getMatch parses the passed url and tries to match it against the route segments and determine the parameter positions
-func (routeParser *routeParser) getMatch(detectionPath, path string, params *[maxParams]string, partialCheck bool) bool { //nolint: revive // Accepting a bool param is fine here
+func (parser *routeParser) getMatch(detectionPath, path string, params *[maxParams]string, partialCheck bool) bool { //nolint:revive // Accepting a bool param is fine here
 	var i, paramsIterator, partLen int
-	for _, segment := range routeParser.segs {
+	for _, segment := range parser.segs {
 		partLen = len(detectionPath)
 		// check const segment
 		if !segment.IsParam {
@@ -618,7 +611,7 @@ func GetTrimmedParam(param string) string {
 	return param[start:end]
 }
 
-// RemoveEscapeChar remove escape characters
+// RemoveEscapeChar removes escape characters
 func RemoveEscapeChar(word string) string {
 	b := []byte(word)
 	dst := 0
@@ -632,6 +625,18 @@ func RemoveEscapeChar(word string) string {
 	return string(b[:dst])
 }
 
+// RemoveEscapeCharBytes removes escape characters
+func RemoveEscapeCharBytes(word []byte) []byte {
+	dst := 0
+	for src := 0; src < len(word); src++ {
+		if word[src] != '\\' {
+			word[dst] = word[src]
+			dst++
+		}
+	}
+	return word[:dst]
+}
+
 func getParamConstraintType(constraintPart string) TypeConstraint {
 	switch constraintPart {
 	case ConstraintInt:
@@ -667,12 +672,25 @@ func getParamConstraintType(constraintPart string) TypeConstraint {
 	}
 }
 
-//nolint:errcheck // TODO: Properly check _all_ errors in here, log them & immediately return
+// CheckConstraint validates if a param matches the given constraint
+// Returns true if the param passes the constraint check, false otherwise
+//
+//nolint:errcheck // TODO: Properly check _all_ errors in here, log them or immediately return
 func (c *Constraint) CheckConstraint(param string) bool {
-	var err error
-	var num int
+	// First check if there's a custom constraint with the same name
+	// This allows custom constraints to override built-in constraints
+	for _, cc := range c.customConstraints {
+		if cc.Name() == c.Name {
+			return cc.Execute(param, c.Data...)
+		}
+	}
 
-	// check data exists
+	var (
+		err error
+		num int
+	)
+
+	// Validate constraint has required data
 	needOneData := []TypeConstraint{minLenConstraint, maxLenConstraint, lenConstraint, minConstraint, maxConstraint, datetimeConstraint, regexConstraint}
 	needTwoData := []TypeConstraint{betweenLenConstraint, rangeConstraint}
 
@@ -691,11 +709,7 @@ func (c *Constraint) CheckConstraint(param string) bool {
 	// check constraints
 	switch c.ID {
 	case noConstraint:
-		for _, cc := range c.customConstraints {
-			if cc.Name() == c.Name {
-				return cc.Execute(param, c.Data...)
-			}
-		}
+		return true
 	case intConstraint:
 		_, err = strconv.Atoi(param)
 	case boolConstraint:
@@ -739,14 +753,14 @@ func (c *Constraint) CheckConstraint(param string) bool {
 		data, _ := strconv.Atoi(c.Data[0])
 		num, err = strconv.Atoi(param)
 
-		if num < data {
+		if err != nil || num < data {
 			return false
 		}
 	case maxConstraint:
 		data, _ := strconv.Atoi(c.Data[0])
 		num, err = strconv.Atoi(param)
 
-		if num > data {
+		if err != nil || num > data {
 			return false
 		}
 	case rangeConstraint:
@@ -754,12 +768,18 @@ func (c *Constraint) CheckConstraint(param string) bool {
 		data2, _ := strconv.Atoi(c.Data[1])
 		num, err = strconv.Atoi(param)
 
-		if num < data || num > data2 {
+		if err != nil || num < data || num > data2 {
 			return false
 		}
 	case datetimeConstraint:
 		_, err = time.Parse(c.Data[0], param)
+		if err != nil {
+			return false
+		}
 	case regexConstraint:
+		if c.RegexCompiler == nil {
+			return false
+		}
 		if match := c.RegexCompiler.MatchString(param); !match {
 			return false
 		}

path_test.go

@@ -217,7 +217,7 @@ func Benchmark_Path_matchParams(t *testing.B) {
 				state = "not match"
 			}
 			t.Run(testCollection.pattern+" | "+state+" | "+c.url, func(b *testing.B) {
-				for i := 0; i <= b.N; i++ {
+				for i := 0; i < b.N; i++ {
 					if match := parser.getMatch(c.url, c.url, &ctxParams, c.partialCheck); match {
 						// Get testCases from the original path
 						matchRes = true
@@ -250,7 +250,7 @@ func Benchmark_RoutePatternMatch(t *testing.B) {
 				state = "not match"
 			}
 			t.Run(testCollection.pattern+" | "+state+" | "+c.url, func(b *testing.B) {
-				for i := 0; i <= b.N; i++ {
+				for i := 0; i < b.N; i++ {
 					if match := RoutePatternMatch(c.url, testCollection.pattern); match {
 						// Get testCases from the original path
 						matchRes = true

path_testcases_test.go

@@ -713,6 +713,14 @@ func init() {
 					{url: "/api/v1/", params: []string{""}, match: true},
 				},
 			},
+			// Add test case for RegexCompiler == nil
+			{
+				pattern: "/api/v1/:param<regex(\\d+)>",
+				testCases: []routeTestCase{
+					{url: "/api/v1/123", params: []string{"123"}, match: true},
+					{url: "/api/v1/abc", params: nil, match: false},
+				},
+			},
 		}...,
 	)
 }

redirect_test.go

@@ -178,7 +178,7 @@ func Test_Redirect_Back_WithFlashMessages(t *testing.T) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	err := c.Redirect().With("success", "1").With("message", "test").Back("/")
 	require.NoError(t, err)
@@ -225,7 +225,7 @@ func Test_Redirect_Route_WithFlashMessages(t *testing.T) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	err := c.Redirect().With("success", "1").With("message", "test").Route("user")
 
@@ -259,7 +259,7 @@ func Test_Redirect_Route_WithOldInput(t *testing.T) {
 			return c.SendString("user")
 		}).Name("user")
 
-		c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+		c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 		c.Request().URI().SetQueryString("id=1&name=tom")
 		err := c.Redirect().With("success", "1").With("message", "test").WithInput().Route("user")
@@ -294,7 +294,7 @@ func Test_Redirect_Route_WithOldInput(t *testing.T) {
 			return c.SendString("user")
 		}).Name("user")
 
-		c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+		c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 		c.Request().Header.Set(HeaderContentType, MIMEApplicationForm)
 		c.Request().SetBodyString("id=1&name=tom")
@@ -330,7 +330,7 @@ func Test_Redirect_Route_WithOldInput(t *testing.T) {
 			return c.SendString("user")
 		}).Name("user")
 
-		c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+		c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 		body := &bytes.Buffer{}
 		writer := multipart.NewWriter(body)
@@ -376,7 +376,7 @@ func Test_Redirect_parseAndClearFlashMessages(t *testing.T) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	msgs := redirectionMsgs{
 		{
@@ -464,7 +464,7 @@ func Benchmark_Redirect_Route(b *testing.B) {
 		return c.JSON(c.Params("name"))
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -491,7 +491,7 @@ func Benchmark_Redirect_Route_WithQueries(b *testing.B) {
 		return c.JSON(c.Params("name"))
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -523,7 +523,7 @@ func Benchmark_Redirect_Route_WithFlashMessages(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ReportAllocs()
 	b.ResetTimer()
@@ -576,7 +576,7 @@ func Benchmark_Redirect_parseAndClearFlashMessages(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	val, err := testredirectionMsgs.MarshalMsg(nil)
 	require.NoError(b, err)
@@ -618,7 +618,7 @@ func Benchmark_Redirect_processFlashMessages(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	c.Redirect().With("success", "1").With("message", "test")
 
@@ -647,7 +647,7 @@ func Benchmark_Redirect_Messages(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	val, err := testredirectionMsgs.MarshalMsg(nil)
 	require.NoError(b, err)
@@ -684,7 +684,7 @@ func Benchmark_Redirect_OldInputs(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	val, err := testredirectionMsgs.MarshalMsg(nil)
 	require.NoError(b, err)
@@ -719,7 +719,7 @@ func Benchmark_Redirect_Message(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	val, err := testredirectionMsgs.MarshalMsg(nil)
 	require.NoError(b, err)
@@ -750,7 +750,7 @@ func Benchmark_Redirect_OldInput(b *testing.B) {
 		return c.SendString("user")
 	}).Name("user")
 
-	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(&fasthttp.RequestCtx{}).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	val, err := testredirectionMsgs.MarshalMsg(nil)
 	require.NoError(b, err)

register.go

@@ -6,18 +6,18 @@ package fiber
 
 // Register defines all router handle interface generate by Route().
 type Register interface {
-	All(handler Handler, middleware ...Handler) Register
-	Get(handler Handler, middleware ...Handler) Register
-	Head(handler Handler, middleware ...Handler) Register
-	Post(handler Handler, middleware ...Handler) Register
-	Put(handler Handler, middleware ...Handler) Register
-	Delete(handler Handler, middleware ...Handler) Register
-	Connect(handler Handler, middleware ...Handler) Register
-	Options(handler Handler, middleware ...Handler) Register
-	Trace(handler Handler, middleware ...Handler) Register
-	Patch(handler Handler, middleware ...Handler) Register
+	All(handler Handler, handlers ...Handler) Register
+	Get(handler Handler, handlers ...Handler) Register
+	Head(handler Handler, handlers ...Handler) Register
+	Post(handler Handler, handlers ...Handler) Register
+	Put(handler Handler, handlers ...Handler) Register
+	Delete(handler Handler, handlers ...Handler) Register
+	Connect(handler Handler, handlers ...Handler) Register
+	Options(handler Handler, handlers ...Handler) Register
+	Trace(handler Handler, handlers ...Handler) Register
+	Patch(handler Handler, handlers ...Handler) Register
 
-	Add(methods []string, handler Handler, middleware ...Handler) Register
+	Add(methods []string, handler Handler, handlers ...Handler) Register
 
 	Route(path string) Register
 }
@@ -45,68 +45,68 @@ type Registering struct {
 //	})
 //
 // This method will match all HTTP verbs: GET, POST, PUT, HEAD etc...
-func (r *Registering) All(handler Handler, middleware ...Handler) Register {
-	r.app.register([]string{methodUse}, r.path, nil, handler, middleware...)
+func (r *Registering) All(handler Handler, handlers ...Handler) Register {
+	r.app.register([]string{methodUse}, r.path, nil, append([]Handler{handler}, handlers...)...)
 	return r
 }
 
 // Get registers a route for GET methods that requests a representation
 // of the specified resource. Requests using GET should only retrieve data.
-func (r *Registering) Get(handler Handler, middleware ...Handler) Register {
-	r.app.Add([]string{MethodGet}, r.path, handler, middleware...)
+func (r *Registering) Get(handler Handler, handlers ...Handler) Register {
+	r.app.Add([]string{MethodGet}, r.path, handler, handlers...)
 	return r
 }
 
 // Head registers a route for HEAD methods that asks for a response identical
 // to that of a GET request, but without the response body.
-func (r *Registering) Head(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodHead}, handler, middleware...)
+func (r *Registering) Head(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodHead}, handler, handlers...)
 }
 
 // Post registers a route for POST methods that is used to submit an entity to the
 // specified resource, often causing a change in state or side effects on the server.
-func (r *Registering) Post(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodPost}, handler, middleware...)
+func (r *Registering) Post(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodPost}, handler, handlers...)
 }
 
 // Put registers a route for PUT methods that replaces all current representations
 // of the target resource with the request payload.
-func (r *Registering) Put(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodPut}, handler, middleware...)
+func (r *Registering) Put(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodPut}, handler, handlers...)
 }
 
 // Delete registers a route for DELETE methods that deletes the specified resource.
-func (r *Registering) Delete(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodDelete}, handler, middleware...)
+func (r *Registering) Delete(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodDelete}, handler, handlers...)
 }
 
 // Connect registers a route for CONNECT methods that establishes a tunnel to the
 // server identified by the target resource.
-func (r *Registering) Connect(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodConnect}, handler, middleware...)
+func (r *Registering) Connect(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodConnect}, handler, handlers...)
 }
 
 // Options registers a route for OPTIONS methods that is used to describe the
 // communication options for the target resource.
-func (r *Registering) Options(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodOptions}, handler, middleware...)
+func (r *Registering) Options(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodOptions}, handler, handlers...)
 }
 
 // Trace registers a route for TRACE methods that performs a message loop-back
 // test along the r.Path to the target resource.
-func (r *Registering) Trace(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodTrace}, handler, middleware...)
+func (r *Registering) Trace(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodTrace}, handler, handlers...)
 }
 
 // Patch registers a route for PATCH methods that is used to apply partial
 // modifications to a resource.
-func (r *Registering) Patch(handler Handler, middleware ...Handler) Register {
-	return r.Add([]string{MethodPatch}, handler, middleware...)
+func (r *Registering) Patch(handler Handler, handlers ...Handler) Register {
+	return r.Add([]string{MethodPatch}, handler, handlers...)
 }
 
 // Add allows you to specify multiple HTTP methods to register a route.
-func (r *Registering) Add(methods []string, handler Handler, middleware ...Handler) Register {
-	r.app.register(methods, r.path, nil, handler, middleware...)
+func (r *Registering) Add(methods []string, handler Handler, handlers ...Handler) Register {
+	r.app.register(methods, r.path, nil, append([]Handler{handler}, handlers...)...)
 	return r
 }
 

req.go

@@ -0,0 +1,159 @@
+package fiber
+
+import (
+	"crypto/tls"
+	"mime/multipart"
+)
+
+//go:generate ifacemaker --file req.go --struct DefaultReq --iface Req --pkg fiber --output req_interface_gen.go --not-exported true --iface-comment "Req"
+type DefaultReq struct {
+	ctx *DefaultCtx
+}
+
+func (r *DefaultReq) Accepts(offers ...string) string {
+	return r.ctx.Accepts(offers...)
+}
+
+func (r *DefaultReq) AcceptsCharsets(offers ...string) string {
+	return r.ctx.AcceptsCharsets(offers...)
+}
+
+func (r *DefaultReq) AcceptsEncodings(offers ...string) string {
+	return r.ctx.AcceptsEncodings(offers...)
+}
+
+func (r *DefaultReq) AcceptsLanguages(offers ...string) string {
+	return r.ctx.AcceptsLanguages(offers...)
+}
+
+func (r *DefaultReq) BaseURL() string {
+	return r.ctx.BaseURL()
+}
+
+func (r *DefaultReq) Body() []byte {
+	return r.ctx.Body()
+}
+
+func (r *DefaultReq) BodyRaw() []byte {
+	return r.ctx.BodyRaw()
+}
+
+func (r *DefaultReq) ClientHelloInfo() *tls.ClientHelloInfo {
+	return r.ctx.ClientHelloInfo()
+}
+
+func (r *DefaultReq) Cookies(key string, defaultValue ...string) string {
+	return r.ctx.Cookies(key, defaultValue...)
+}
+
+func (r *DefaultReq) FormFile(key string) (*multipart.FileHeader, error) {
+	return r.ctx.FormFile(key)
+}
+
+func (r *DefaultReq) FormValue(key string, defaultValue ...string) string {
+	return r.ctx.FormValue(key, defaultValue...)
+}
+
+func (r *DefaultReq) Fresh() bool {
+	return r.ctx.Fresh()
+}
+
+func (r *DefaultReq) Get(key string, defaultValue ...string) string {
+	return r.ctx.Get(key, defaultValue...)
+}
+
+func (r *DefaultReq) Host() string {
+	return r.ctx.Host()
+}
+
+func (r *DefaultReq) Hostname() string {
+	return r.ctx.Hostname()
+}
+
+func (r *DefaultReq) IP() string {
+	return r.ctx.IP()
+}
+
+func (r *DefaultReq) IPs() []string {
+	return r.ctx.IPs()
+}
+
+func (r *DefaultReq) Is(extension string) bool {
+	return r.ctx.Is(extension)
+}
+
+func (r *DefaultReq) IsFromLocal() bool {
+	return r.ctx.IsFromLocal()
+}
+
+func (r *DefaultReq) IsProxyTrusted() bool {
+	return r.ctx.IsProxyTrusted()
+}
+
+func (r *DefaultReq) Method(override ...string) string {
+	return r.ctx.Method(override...)
+}
+
+func (r *DefaultReq) MultipartForm() (*multipart.Form, error) {
+	return r.ctx.MultipartForm()
+}
+
+func (r *DefaultReq) OriginalURL() string {
+	return r.ctx.OriginalURL()
+}
+
+func (r *DefaultReq) Params(key string, defaultValue ...string) string {
+	return r.ctx.Params(key, defaultValue...)
+}
+
+func (r *DefaultReq) Path(override ...string) string {
+	return r.ctx.Path(override...)
+}
+
+func (r *DefaultReq) Port() string {
+	return r.ctx.Port()
+}
+
+func (r *DefaultReq) Protocol() string {
+	return r.ctx.Protocol()
+}
+
+func (r *DefaultReq) Queries() map[string]string {
+	return r.ctx.Queries()
+}
+
+func (r *DefaultReq) Query(key string, defaultValue ...string) string {
+	return r.ctx.Query(key, defaultValue...)
+}
+
+func (r *DefaultReq) Range(size int) (Range, error) {
+	return r.ctx.Range(size)
+}
+
+func (r *DefaultReq) Route() *Route {
+	return r.ctx.Route()
+}
+
+func (r *DefaultReq) SaveFile(fileheader *multipart.FileHeader, path string) error {
+	return r.ctx.SaveFile(fileheader, path)
+}
+
+func (r *DefaultReq) SaveFileToStorage(fileheader *multipart.FileHeader, path string, storage Storage) error {
+	return r.ctx.SaveFileToStorage(fileheader, path, storage)
+}
+
+func (r *DefaultReq) Secure() bool {
+	return r.ctx.Secure()
+}
+
+func (r *DefaultReq) Stale() bool {
+	return r.ctx.Stale()
+}
+
+func (r *DefaultReq) Subdomains(offset ...int) []string {
+	return r.ctx.Subdomains(offset...)
+}
+
+func (r *DefaultReq) XHR() bool {
+	return r.ctx.XHR()
+}

req_interface_gen.go

@@ -0,0 +1,49 @@
+// Code generated by ifacemaker; DO NOT EDIT.
+
+package fiber
+
+import (
+	"crypto/tls"
+	"mime/multipart"
+)
+
+// Req
+type Req interface {
+	Accepts(offers ...string) string
+	AcceptsCharsets(offers ...string) string
+	AcceptsEncodings(offers ...string) string
+	AcceptsLanguages(offers ...string) string
+	BaseURL() string
+	Body() []byte
+	BodyRaw() []byte
+	ClientHelloInfo() *tls.ClientHelloInfo
+	Cookies(key string, defaultValue ...string) string
+	FormFile(key string) (*multipart.FileHeader, error)
+	FormValue(key string, defaultValue ...string) string
+	Fresh() bool
+	Get(key string, defaultValue ...string) string
+	Host() string
+	Hostname() string
+	IP() string
+	IPs() []string
+	Is(extension string) bool
+	IsFromLocal() bool
+	IsProxyTrusted() bool
+	Method(override ...string) string
+	MultipartForm() (*multipart.Form, error)
+	OriginalURL() string
+	Params(key string, defaultValue ...string) string
+	Path(override ...string) string
+	Port() string
+	Protocol() string
+	Queries() map[string]string
+	Query(key string, defaultValue ...string) string
+	Range(size int) (Range, error)
+	Route() *Route
+	SaveFile(fileheader *multipart.FileHeader, path string) error
+	SaveFileToStorage(fileheader *multipart.FileHeader, path string, storage Storage) error
+	Secure() bool
+	Stale() bool
+	Subdomains(offset ...int) []string
+	XHR() bool
+}

res.go

@@ -0,0 +1,118 @@
+package fiber
+
+import (
+	"bufio"
+)
+
+//go:generate ifacemaker --file res.go --struct DefaultRes --iface Res --pkg fiber --output res_interface_gen.go --not-exported true --iface-comment "Res"
+type DefaultRes struct {
+	ctx *DefaultCtx
+}
+
+func (r *DefaultRes) Append(field string, values ...string) {
+	r.ctx.Append(field, values...)
+}
+
+func (r *DefaultRes) Attachment(filename ...string) {
+	r.ctx.Attachment(filename...)
+}
+
+func (r *DefaultRes) AutoFormat(body any) error {
+	return r.ctx.AutoFormat(body)
+}
+
+func (r *DefaultRes) CBOR(body any, ctype ...string) error {
+	return r.ctx.CBOR(body, ctype...)
+}
+
+func (r *DefaultRes) ClearCookie(key ...string) {
+	r.ctx.ClearCookie(key...)
+}
+
+func (r *DefaultRes) Cookie(cookie *Cookie) {
+	r.ctx.Cookie(cookie)
+}
+
+func (r *DefaultRes) Download(file string, filename ...string) error {
+	return r.ctx.Download(file, filename...)
+}
+
+func (r *DefaultRes) Format(handlers ...ResFmt) error {
+	return r.ctx.Format(handlers...)
+}
+
+func (r *DefaultRes) Get(key string, defaultValue ...string) string {
+	return r.ctx.GetRespHeader(key, defaultValue...)
+}
+
+func (r *DefaultRes) JSON(body any, ctype ...string) error {
+	return r.ctx.JSON(body, ctype...)
+}
+
+func (r *DefaultRes) JSONP(data any, callback ...string) error {
+	return r.ctx.JSONP(data, callback...)
+}
+
+func (r *DefaultRes) Links(link ...string) {
+	r.ctx.Links(link...)
+}
+
+func (r *DefaultRes) Location(path string) {
+	r.ctx.Location(path)
+}
+
+func (r *DefaultRes) Render(name string, bind any, layouts ...string) error {
+	return r.ctx.Render(name, bind, layouts...)
+}
+
+func (r *DefaultRes) Send(body []byte) error {
+	return r.ctx.Send(body)
+}
+
+func (r *DefaultRes) SendFile(file string, config ...SendFile) error {
+	return r.ctx.SendFile(file, config...)
+}
+
+func (r *DefaultRes) SendStatus(status int) error {
+	return r.ctx.SendStatus(status)
+}
+
+func (r *DefaultRes) SendString(body string) error {
+	return r.ctx.SendString(body)
+}
+
+func (r *DefaultRes) SendStreamWriter(streamWriter func(*bufio.Writer)) error {
+	return r.ctx.SendStreamWriter(streamWriter)
+}
+
+func (r *DefaultRes) Set(key, val string) {
+	r.ctx.Set(key, val)
+}
+
+func (r *DefaultRes) Status(status int) Ctx {
+	return r.ctx.Status(status)
+}
+
+func (r *DefaultRes) Type(extension string, charset ...string) Ctx {
+	return r.ctx.Type(extension, charset...)
+}
+
+func (r *DefaultRes) Vary(fields ...string) {
+	r.ctx.Vary(fields...)
+}
+
+func (r *DefaultRes) Write(p []byte) (int, error) {
+	return r.ctx.Write(p)
+}
+
+func (r *DefaultRes) Writef(f string, a ...any) (int, error) {
+	return r.ctx.Writef(f, a...)
+}
+
+func (r *DefaultRes) WriteString(s string) (int, error) {
+	return r.ctx.WriteString(s)
+}
+
+func (r *DefaultRes) XML(data any) error {
+	return r.ctx.XML(data)
+}

res_interface_gen.go

@@ -0,0 +1,38 @@
+// Code generated by ifacemaker; DO NOT EDIT.
+
+package fiber
+
+import (
+	"bufio"
+)
+
+// Res
+type Res interface {
+	Append(field string, values ...string)
+	Attachment(filename ...string)
+	AutoFormat(body any) error
+	CBOR(body any, ctype ...string) error
+	ClearCookie(key ...string)
+	Cookie(cookie *Cookie)
+	Download(file string, filename ...string) error
+	Format(handlers ...ResFmt) error
+	Get(key string, defaultValue ...string) string
+	JSON(body any, ctype ...string) error
+	JSONP(data any, callback ...string) error
+	Links(link ...string)
+	Location(path string)
+	Render(name string, bind any, layouts ...string) error
+	Send(body []byte) error
+	SendFile(file string, config ...SendFile) error
+	SendStatus(status int) error
+	SendString(body string) error
+	SendStreamWriter(streamWriter func(*bufio.Writer)) error
+	Set(key, val string)
+	Status(status int) Ctx
+	Type(extension string, charset ...string) Ctx
+	Vary(fields ...string)
+	Write(p []byte) (int, error)
+	Writef(f string, a ...any) (int, error)
+	WriteString(s string) (int, error)
+	XML(data any) error
+}

router.go

@@ -20,18 +20,18 @@ import (
 type Router interface {
 	Use(args ...any) Router
 
-	Get(path string, handler Handler, middleware ...Handler) Router
-	Head(path string, handler Handler, middleware ...Handler) Router
-	Post(path string, handler Handler, middleware ...Handler) Router
-	Put(path string, handler Handler, middleware ...Handler) Router
-	Delete(path string, handler Handler, middleware ...Handler) Router
-	Connect(path string, handler Handler, middleware ...Handler) Router
-	Options(path string, handler Handler, middleware ...Handler) Router
-	Trace(path string, handler Handler, middleware ...Handler) Router
-	Patch(path string, handler Handler, middleware ...Handler) Router
+	Get(path string, handler Handler, handlers ...Handler) Router
+	Head(path string, handler Handler, handlers ...Handler) Router
+	Post(path string, handler Handler, handlers ...Handler) Router
+	Put(path string, handler Handler, handlers ...Handler) Router
+	Delete(path string, handler Handler, handlers ...Handler) Router
+	Connect(path string, handler Handler, handlers ...Handler) Router
+	Options(path string, handler Handler, handlers ...Handler) Router
+	Trace(path string, handler Handler, handlers ...Handler) Router
+	Patch(path string, handler Handler, handlers ...Handler) Router
 
-	Add(methods []string, path string, handler Handler, middleware ...Handler) Router
-	All(path string, handler Handler, middleware ...Handler) Router
+	Add(methods []string, path string, handler Handler, handlers ...Handler) Router
+	All(path string, handler Handler, handlers ...Handler) Router
 
 	Group(prefix string, handlers ...Handler) Router
 
@@ -108,11 +108,11 @@ func (r *Route) match(detectionPath, path string, params *[maxParams]string) boo
 	return false
 }
 
-func (app *App) nextCustom(c CustomCtx) (bool, error) { //nolint: unparam // bool param might be useful for testing
+func (app *App) nextCustom(c CustomCtx) (bool, error) { //nolint:unparam // bool param might be useful for testing
 	// Get stack length
-	tree, ok := app.treeStack[c.getMethodINT()][c.getTreePath()]
+	tree, ok := app.treeStack[c.getMethodInt()][c.getTreePathHash()]
 	if !ok {
-		tree = app.treeStack[c.getMethodINT()][""]
+		tree = app.treeStack[c.getMethodInt()][0]
 	}
 	lenr := len(tree) - 1
 
@@ -158,9 +158,9 @@ func (app *App) nextCustom(c CustomCtx) (bool, error) { //nolint: unparam // boo
 
 func (app *App) next(c *DefaultCtx) (bool, error) {
 	// Get stack length
-	tree, ok := app.treeStack[c.methodINT][c.treePath]
+	tree, ok := app.treeStack[c.methodInt][c.treePathHash]
 	if !ok {
-		tree = app.treeStack[c.methodINT][""]
+		tree = app.treeStack[c.methodInt][0]
 	}
 	lenTree := len(tree) - 1
 
@@ -180,7 +180,7 @@ func (app *App) next(c *DefaultCtx) (bool, error) {
 		}
 
 		// Check if it matches the request path
-		match = route.match(c.detectionPath, c.path, &c.values)
+		match = route.match(utils.UnsafeString(c.detectionPath), utils.UnsafeString(c.path), &c.values)
 		if !match {
 			// No match, next route
 			continue
@@ -202,7 +202,7 @@ func (app *App) next(c *DefaultCtx) (bool, error) {
 	}
 
 	// If c.Next() does not match, return 404
-	err := NewError(StatusNotFound, "Cannot "+c.method+" "+html.EscapeString(c.pathOriginal))
+	err := NewError(StatusNotFound, "Cannot "+c.Method()+" "+html.EscapeString(c.pathOriginal))
 	if !c.matched && app.methodExist(c) {
 		// If no match, scan stack again if other methods match the request
 		// Moved from app.handler because middleware may break the route chain
@@ -221,7 +221,7 @@ func (app *App) defaultRequestHandler(rctx *fasthttp.RequestCtx) {
 	defer app.ReleaseCtx(ctx)
 
 	// Check if the HTTP method is valid
-	if ctx.methodINT == -1 {
+	if ctx.methodInt == -1 {
 		_ = ctx.SendStatus(StatusNotImplemented) //nolint:errcheck // Always return nil
 		return
 	}
@@ -318,10 +318,16 @@ func (*App) copyRoute(route *Route) *Route {
 	}
 }
 
-func (app *App) register(methods []string, pathRaw string, group *Group, handler Handler, middleware ...Handler) {
-	handlers := middleware
-	if handler != nil {
-		handlers = append(handlers, handler)
+func (app *App) register(methods []string, pathRaw string, group *Group, handlers ...Handler) {
+	// A regular route requires at least one ctx handler
+	if len(handlers) == 0 && group == nil {
+		panic(fmt.Sprintf("missing handler/middleware in route: %s\n", pathRaw))
+	}
+	// No nil handlers allowed
+	for _, h := range handlers {
+		if nil == h {
+			panic(fmt.Sprintf("nil handler in route: %s\n", pathRaw))
+		}
 	}
 
 	// Precompute path normalization ONCE
@@ -343,17 +349,14 @@ func (app *App) register(methods []string, pathRaw string, group *Group, handler
 	parsedRaw := parseRoute(pathRaw, app.customConstraints...)
 	parsedPretty := parseRoute(pathPretty, app.customConstraints...)
 
+	isMount := group != nil && group.app != app
+
 	for _, method := range methods {
 		method = utils.ToUpper(method)
 		if method != methodUse && app.methodInt(method) == -1 {
 			panic(fmt.Sprintf("add: invalid http method %s\n", method))
 		}
 
-		isMount := group != nil && group.app != app
-		if len(handlers) == 0 && !isMount {
-			panic(fmt.Sprintf("missing handler/middleware in route: %s\n", pathRaw))
-		}
-
 		isUse := method == methodUse
 		isStar := pathClean == "/*"
 		isRoot := pathClean == "/"
@@ -451,30 +454,28 @@ func (app *App) buildTree() *App {
 
 	// loop all the methods and stacks and create the prefix tree
 	for m := range app.config.RequestMethods {
-		tsMap := make(map[string][]*Route)
+		tsMap := make(map[int][]*Route)
 		for _, route := range app.stack[m] {
-			treePath := ""
-			if len(route.routeParser.segs) > 0 && len(route.routeParser.segs[0].Const) >= 3 {
-				treePath = route.routeParser.segs[0].Const[:3]
+			treePathHash := 0
+			if len(route.routeParser.segs) > 0 && len(route.routeParser.segs[0].Const) >= maxDetectionPaths {
+				treePathHash = int(route.routeParser.segs[0].Const[0])<<16 |
+					int(route.routeParser.segs[0].Const[1])<<8 |
+					int(route.routeParser.segs[0].Const[2])
 			}
 			// create tree stack
-			tsMap[treePath] = append(tsMap[treePath], route)
+			tsMap[treePathHash] = append(tsMap[treePathHash], route)
 		}
-		app.treeStack[m] = tsMap
-	}
 
-	// loop the methods and tree stacks and add global stack and sort everything
-	for m := range app.config.RequestMethods {
-		tsMap := app.treeStack[m]
 		for treePart := range tsMap {
-			if treePart != "" {
+			if treePart != 0 {
 				// merge global tree routes in current tree stack
-				tsMap[treePart] = uniqueRouteStack(append(tsMap[treePart], tsMap[""]...))
+				tsMap[treePart] = uniqueRouteStack(append(tsMap[treePart], tsMap[0]...))
 			}
 			// sort tree slices with the positions
 			slc := tsMap[treePart]
 			sort.Slice(slc, func(i, j int) bool { return slc[i].pos < slc[j].pos })
 		}
+		app.treeStack[m] = tsMap
 	}
 	app.routesRefreshed = false
 

router_test.go

@@ -7,7 +7,6 @@ package fiber
 import (
 	"encoding/json"
 	"errors"
-	"fmt"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -31,6 +30,39 @@ func init() {
 	}
 }
 
+func Test_Route_Handler_Order(t *testing.T) {
+	t.Parallel()
+
+	app := New()
+
+	var order []int
+
+	handler1 := func(c Ctx) error {
+		order = append(order, 1)
+		return c.Next()
+	}
+	handler2 := func(c Ctx) error {
+		order = append(order, 2)
+		return c.Next()
+	}
+	handler3 := func(c Ctx) error {
+		order = append(order, 3)
+		return c.Next()
+	}
+
+	app.Get("/test", handler1, handler2, handler3, func(c Ctx) error {
+		order = append(order, 4)
+		return c.SendStatus(200)
+	})
+
+	resp, err := app.Test(httptest.NewRequest(MethodGet, "/test", nil))
+	require.NoError(t, err, "app.Test(req)")
+	require.Equal(t, 200, resp.StatusCode, "Status code")
+
+	expectedOrder := []int{1, 2, 3, 4}
+	require.Equal(t, expectedOrder, order, "Handler order")
+}
+
 func Test_Route_Match_SameLength(t *testing.T) {
 	t.Parallel()
 
@@ -294,12 +326,22 @@ func Test_Router_Register_Missing_Handler(t *testing.T) {
 	t.Parallel()
 
 	app := New()
-	defer func() {
-		if err := recover(); err != nil {
-			require.Equal(t, "missing handler/middleware in route: /doe\n", fmt.Sprintf("%v", err))
-		}
-	}()
-	app.register([]string{"USE"}, "/doe", nil, nil)
+
+	t.Run("No Handler", func(t *testing.T) {
+		t.Parallel()
+
+		require.PanicsWithValue(t, "missing handler/middleware in route: /doe\n", func() {
+			app.register([]string{"USE"}, "/doe", nil)
+		})
+	})
+
+	t.Run("Nil Handler", func(t *testing.T) {
+		t.Parallel()
+
+		require.PanicsWithValue(t, "nil handler in route: /doe\n", func() {
+			app.register([]string{"USE"}, "/doe", nil, nil)
+		})
+	})
 }
 
 func Test_Ensure_Router_Interface_Implementation(t *testing.T) {
@@ -558,7 +600,7 @@ func Benchmark_Router_Next(b *testing.B) {
 	var res bool
 	var err error
 
-	c := app.AcquireCtx(request).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+	c := app.AcquireCtx(request).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
@@ -614,6 +656,50 @@ func Benchmark_Router_Next_Default_Parallel(b *testing.B) {
 	})
 }
 
+// go test -v ./... -run=^$ -bench=Benchmark_Router_Next_Default_Immutable -benchmem -count=4
+func Benchmark_Router_Next_Default_Immutable(b *testing.B) {
+	app := New(Config{Immutable: true})
+	app.Get("/", func(_ Ctx) error {
+		return nil
+	})
+
+	h := app.Handler()
+
+	fctx := &fasthttp.RequestCtx{}
+	fctx.Request.Header.SetMethod(MethodGet)
+	fctx.Request.SetRequestURI("/")
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for n := 0; n < b.N; n++ {
+		h(fctx)
+	}
+}
+
+// go test -benchmem -run=^$ -bench ^Benchmark_Router_Next_Default_Parallel_Immutable$ github.com/gofiber/fiber/v3 -count=1
+func Benchmark_Router_Next_Default_Parallel_Immutable(b *testing.B) {
+	app := New(Config{Immutable: true})
+	app.Get("/", func(_ Ctx) error {
+		return nil
+	})
+
+	h := app.Handler()
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		fctx := &fasthttp.RequestCtx{}
+		fctx.Request.Header.SetMethod(MethodGet)
+		fctx.Request.SetRequestURI("/")
+
+		for pb.Next() {
+			h(fctx)
+		}
+	})
+}
+
 // go test -v ./... -run=^$ -bench=Benchmark_Route_Match -benchmem -count=4
 func Benchmark_Route_Match(b *testing.B) {
 	var match bool
@@ -783,7 +869,7 @@ func Benchmark_Router_Github_API(b *testing.B) {
 		for n := 0; n < b.N; n++ {
 			c.URI().SetPath(routesFixture.TestRoutes[i].Path)
 
-			ctx := app.AcquireCtx(c).(*DefaultCtx) //nolint:errcheck, forcetypeassert // not needed
+			ctx := app.AcquireCtx(c).(*DefaultCtx) //nolint:errcheck,forcetypeassert // not needed
 
 			match, err = app.next(ctx)
 			app.ReleaseCtx(ctx)

state.go

@@ -0,0 +1,322 @@
+package fiber
+
+import (
+	"sync"
+)
+
+// State is a key-value store for Fiber's app in order to be used as a global storage for the app's dependencies.
+// It's a thread-safe implementation of a map[string]any, using sync.Map.
+type State struct {
+	dependencies sync.Map
+}
+
+// NewState creates a new instance of State.
+func newState() *State {
+	return &State{
+		dependencies: sync.Map{},
+	}
+}
+
+// Set sets a key-value pair in the State.
+func (s *State) Set(key string, value any) {
+	s.dependencies.Store(key, value)
+}
+
+// Get retrieves a value from the State.
+func (s *State) Get(key string) (any, bool) {
+	return s.dependencies.Load(key)
+}
+
+// MustGet retrieves a value from the State and panics if the key is not found.
+func (s *State) MustGet(key string) any {
+	if dep, ok := s.Get(key); ok {
+		return dep
+	}
+
+	panic("state: dependency not found!")
+}
+
+// Has checks if a key is present in the State.
+// It returns a boolean indicating if the key is present.
+func (s *State) Has(key string) bool {
+	_, ok := s.Get(key)
+	return ok
+}
+
+// Delete removes a key-value pair from the State.
+func (s *State) Delete(key string) {
+	s.dependencies.Delete(key)
+}
+
+// Reset resets the State by removing all keys.
+func (s *State) Reset() {
+	s.dependencies.Clear()
+}
+
+// Keys returns a slice containing all keys present in the State.
+func (s *State) Keys() []string {
+	keys := make([]string, 0)
+	s.dependencies.Range(func(key, _ any) bool {
+		keyStr, ok := key.(string)
+		if !ok {
+			return false
+		}
+
+		keys = append(keys, keyStr)
+		return true
+	})
+
+	return keys
+}
+
+// Len returns the number of keys in the State.
+func (s *State) Len() int {
+	length := 0
+	s.dependencies.Range(func(_, _ any) bool {
+		length++
+		return true
+	})
+
+	return length
+}
+
+// GetState retrieves a value from the State and casts it to the desired type.
+// It returns the casted value and a boolean indicating if the cast was successful.
+func GetState[T any](s *State, key string) (T, bool) {
+	dep, ok := s.Get(key)
+
+	if ok {
+		depT, okCast := dep.(T)
+		return depT, okCast
+	}
+
+	var zeroVal T
+	return zeroVal, false
+}
+
+// MustGetState retrieves a value from the State and casts it to the desired type.
+// It panics if the key is not found or if the type assertion fails.
+func MustGetState[T any](s *State, key string) T {
+	dep, ok := GetState[T](s, key)
+	if !ok {
+		panic("state: dependency not found!")
+	}
+
+	return dep
+}
+
+// GetStateWithDefault retrieves a value from the State,
+// casting it to the desired type. If the key is not present,
+// it returns the provided default value.
+func GetStateWithDefault[T any](s *State, key string, defaultVal T) T {
+	dep, ok := GetState[T](s, key)
+	if !ok {
+		return defaultVal
+	}
+
+	return dep
+}
+
+// GetString retrieves a string value from the State.
+// It returns the string and a boolean indicating successful type assertion.
+func (s *State) GetString(key string) (string, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		depString, okCast := dep.(string)
+		return depString, okCast
+	}
+
+	return "", false
+}
+
+// GetInt retrieves an integer value from the State.
+// It returns the int and a boolean indicating successful type assertion.
+func (s *State) GetInt(key string) (int, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		depInt, okCast := dep.(int)
+		return depInt, okCast
+	}
+
+	return 0, false
+}
+
+// GetBool retrieves a boolean value from the State.
+// It returns the bool and a boolean indicating successful type assertion.
+func (s *State) GetBool(key string) (value, ok bool) { //nolint:nonamedreturns // Better idea to use named returns here
+	dep, ok := s.Get(key)
+	if ok {
+		depBool, okCast := dep.(bool)
+		return depBool, okCast
+	}
+
+	return false, false
+}
+
+// GetFloat64 retrieves a float64 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetFloat64(key string) (float64, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		depFloat64, okCast := dep.(float64)
+		return depFloat64, okCast
+	}
+
+	return 0, false
+}
+
+// GetUint retrieves a uint value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetUint(key string) (uint, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depUint, okCast := dep.(uint); okCast {
+			return depUint, true
+		}
+	}
+	return 0, false
+}
+
+// GetInt8 retrieves an int8 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetInt8(key string) (int8, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depInt8, okCast := dep.(int8); okCast {
+			return depInt8, true
+		}
+	}
+	return 0, false
+}
+
+// GetInt16 retrieves an int16 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetInt16(key string) (int16, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depInt16, okCast := dep.(int16); okCast {
+			return depInt16, true
+		}
+	}
+	return 0, false
+}
+
+// GetInt32 retrieves an int32 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetInt32(key string) (int32, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depInt32, okCast := dep.(int32); okCast {
+			return depInt32, true
+		}
+	}
+	return 0, false
+}
+
+// GetInt64 retrieves an int64 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetInt64(key string) (int64, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depInt64, okCast := dep.(int64); okCast {
+			return depInt64, true
+		}
+	}
+	return 0, false
+}
+
+// GetUint8 retrieves a uint8 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetUint8(key string) (uint8, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depUint8, okCast := dep.(uint8); okCast {
+			return depUint8, true
+		}
+	}
+	return 0, false
+}
+
+// GetUint16 retrieves a uint16 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetUint16(key string) (uint16, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depUint16, okCast := dep.(uint16); okCast {
+			return depUint16, true
+		}
+	}
+	return 0, false
+}
+
+// GetUint32 retrieves a uint32 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetUint32(key string) (uint32, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depUint32, okCast := dep.(uint32); okCast {
+			return depUint32, true
+		}
+	}
+	return 0, false
+}
+
+// GetUint64 retrieves a uint64 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetUint64(key string) (uint64, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depUint64, okCast := dep.(uint64); okCast {
+			return depUint64, true
+		}
+	}
+	return 0, false
+}
+
+// GetUintptr retrieves a uintptr value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetUintptr(key string) (uintptr, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depUintptr, okCast := dep.(uintptr); okCast {
+			return depUintptr, true
+		}
+	}
+	return 0, false
+}
+
+// GetFloat32 retrieves a float32 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetFloat32(key string) (float32, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depFloat32, okCast := dep.(float32); okCast {
+			return depFloat32, true
+		}
+	}
+	return 0, false
+}
+
+// GetComplex64 retrieves a complex64 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetComplex64(key string) (complex64, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depComplex64, okCast := dep.(complex64); okCast {
+			return depComplex64, true
+		}
+	}
+	return 0, false
+}
+
+// GetComplex128 retrieves a complex128 value from the State.
+// It returns the float64 and a boolean indicating successful type assertion.
+func (s *State) GetComplex128(key string) (complex128, bool) {
+	dep, ok := s.Get(key)
+	if ok {
+		if depComplex128, okCast := dep.(complex128); okCast {
+			return depComplex128, true
+		}
+	}
+	return 0, false
+}

state_test.go

@@ -0,0 +1,981 @@
+package fiber
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestState_SetAndGet_WithApp(t *testing.T) {
+	t.Parallel()
+	// Create app
+	app := New()
+
+	// test setting and getting a value
+	app.State().Set("foo", "bar")
+	val, ok := app.State().Get("foo")
+	require.True(t, ok)
+	require.Equal(t, "bar", val)
+
+	// test key not found
+	_, ok = app.State().Get("unknown")
+	require.False(t, ok)
+}
+
+func TestState_SetAndGet(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	// test setting and getting a value
+	st.Set("foo", "bar")
+	val, ok := st.Get("foo")
+	require.True(t, ok)
+	require.Equal(t, "bar", val)
+
+	// test key not found
+	_, ok = st.Get("unknown")
+	require.False(t, ok)
+}
+
+func TestState_GetString(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("str", "hello")
+	s, ok := st.GetString("str")
+	require.True(t, ok)
+	require.Equal(t, "hello", s)
+
+	// wrong type should return false
+	st.Set("num", 123)
+	s, ok = st.GetString("num")
+	require.False(t, ok)
+	require.Equal(t, "", s)
+
+	// missing key should return false
+	s, ok = st.GetString("missing")
+	require.False(t, ok)
+	require.Equal(t, "", s)
+}
+
+func TestState_GetInt(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("num", 456)
+	i, ok := st.GetInt("num")
+	require.True(t, ok)
+	require.Equal(t, 456, i)
+
+	// wrong type should return zero value
+	st.Set("str", "abc")
+	i, ok = st.GetInt("str")
+	require.False(t, ok)
+	require.Equal(t, 0, i)
+
+	// missing key should return zero value
+	i, ok = st.GetInt("missing")
+	require.False(t, ok)
+	require.Equal(t, 0, i)
+}
+
+func TestState_GetBool(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("flag", true)
+	b, ok := st.GetBool("flag")
+	require.True(t, ok)
+	require.True(t, b)
+
+	// wrong type
+	st.Set("num", 1)
+	b, ok = st.GetBool("num")
+	require.False(t, ok)
+	require.False(t, b)
+
+	// missing key should return false
+	b, ok = st.GetBool("missing")
+	require.False(t, ok)
+	require.False(t, b)
+}
+
+func TestState_GetFloat64(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("pi", 3.14)
+	f, ok := st.GetFloat64("pi")
+	require.True(t, ok)
+	require.InDelta(t, 3.14, f, 0.0001)
+
+	// wrong type should return zero value
+	st.Set("int", 10)
+	f, ok = st.GetFloat64("int")
+	require.False(t, ok)
+	require.InDelta(t, 0.0, f, 0.0001)
+
+	// missing key should return zero value
+	f, ok = st.GetFloat64("missing")
+	require.False(t, ok)
+	require.InDelta(t, 0.0, f, 0.0001)
+}
+
+func TestState_GetUint(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("uint", uint(100))
+	u, ok := st.GetUint("uint")
+	require.True(t, ok)
+	require.Equal(t, uint(100), u)
+
+	st.Set("wrong", "not uint")
+	u, ok = st.GetUint("wrong")
+	require.False(t, ok)
+	require.Equal(t, uint(0), u)
+
+	u, ok = st.GetUint("missing")
+	require.False(t, ok)
+	require.Equal(t, uint(0), u)
+}
+
+func TestState_GetInt8(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("int8", int8(10))
+	i, ok := st.GetInt8("int8")
+	require.True(t, ok)
+	require.Equal(t, int8(10), i)
+
+	st.Set("wrong", "not int8")
+	i, ok = st.GetInt8("wrong")
+	require.False(t, ok)
+	require.Equal(t, int8(0), i)
+
+	i, ok = st.GetInt8("missing")
+	require.False(t, ok)
+	require.Equal(t, int8(0), i)
+}
+
+func TestState_GetInt16(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("int16", int16(200))
+	i, ok := st.GetInt16("int16")
+	require.True(t, ok)
+	require.Equal(t, int16(200), i)
+
+	st.Set("wrong", "not int16")
+	i, ok = st.GetInt16("wrong")
+	require.False(t, ok)
+	require.Equal(t, int16(0), i)
+
+	i, ok = st.GetInt16("missing")
+	require.False(t, ok)
+	require.Equal(t, int16(0), i)
+}
+
+func TestState_GetInt32(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("int32", int32(3000))
+	i, ok := st.GetInt32("int32")
+	require.True(t, ok)
+	require.Equal(t, int32(3000), i)
+
+	st.Set("wrong", "not int32")
+	i, ok = st.GetInt32("wrong")
+	require.False(t, ok)
+	require.Equal(t, int32(0), i)
+
+	i, ok = st.GetInt32("missing")
+	require.False(t, ok)
+	require.Equal(t, int32(0), i)
+}
+
+func TestState_GetInt64(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("int64", int64(4000))
+	i, ok := st.GetInt64("int64")
+	require.True(t, ok)
+	require.Equal(t, int64(4000), i)
+
+	st.Set("wrong", "not int64")
+	i, ok = st.GetInt64("wrong")
+	require.False(t, ok)
+	require.Equal(t, int64(0), i)
+
+	i, ok = st.GetInt64("missing")
+	require.False(t, ok)
+	require.Equal(t, int64(0), i)
+}
+
+func TestState_GetUint8(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("uint8", uint8(20))
+	u, ok := st.GetUint8("uint8")
+	require.True(t, ok)
+	require.Equal(t, uint8(20), u)
+
+	st.Set("wrong", "not uint8")
+	u, ok = st.GetUint8("wrong")
+	require.False(t, ok)
+	require.Equal(t, uint8(0), u)
+
+	u, ok = st.GetUint8("missing")
+	require.False(t, ok)
+	require.Equal(t, uint8(0), u)
+}
+
+func TestState_GetUint16(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("uint16", uint16(300))
+	u, ok := st.GetUint16("uint16")
+	require.True(t, ok)
+	require.Equal(t, uint16(300), u)
+
+	st.Set("wrong", "not uint16")
+	u, ok = st.GetUint16("wrong")
+	require.False(t, ok)
+	require.Equal(t, uint16(0), u)
+
+	u, ok = st.GetUint16("missing")
+	require.False(t, ok)
+	require.Equal(t, uint16(0), u)
+}
+
+func TestState_GetUint32(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("uint32", uint32(400000))
+	u, ok := st.GetUint32("uint32")
+	require.True(t, ok)
+	require.Equal(t, uint32(400000), u)
+
+	st.Set("wrong", "not uint32")
+	u, ok = st.GetUint32("wrong")
+	require.False(t, ok)
+	require.Equal(t, uint32(0), u)
+
+	u, ok = st.GetUint32("missing")
+	require.False(t, ok)
+	require.Equal(t, uint32(0), u)
+}
+
+func TestState_GetUint64(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("uint64", uint64(5000000))
+	u, ok := st.GetUint64("uint64")
+	require.True(t, ok)
+	require.Equal(t, uint64(5000000), u)
+
+	st.Set("wrong", "not uint64")
+	u, ok = st.GetUint64("wrong")
+	require.False(t, ok)
+	require.Equal(t, uint64(0), u)
+
+	u, ok = st.GetUint64("missing")
+	require.False(t, ok)
+	require.Equal(t, uint64(0), u)
+}
+
+func TestState_GetUintptr(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	var ptr uintptr = 12345
+	st.Set("uintptr", ptr)
+	u, ok := st.GetUintptr("uintptr")
+	require.True(t, ok)
+	require.Equal(t, ptr, u)
+
+	st.Set("wrong", "not uintptr")
+	u, ok = st.GetUintptr("wrong")
+	require.False(t, ok)
+	require.Equal(t, uintptr(0), u)
+
+	u, ok = st.GetUintptr("missing")
+	require.False(t, ok)
+	require.Equal(t, uintptr(0), u)
+}
+
+func TestState_GetFloat32(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("float32", float32(3.14))
+	f, ok := st.GetFloat32("float32")
+	require.True(t, ok)
+	require.InDelta(t, float32(3.14), f, 0.0001)
+
+	st.Set("wrong", "not float32")
+	f, ok = st.GetFloat32("wrong")
+	require.False(t, ok)
+	require.InDelta(t, float32(0), f, 0.0001)
+
+	f, ok = st.GetFloat32("missing")
+	require.False(t, ok)
+	require.InDelta(t, float32(0), f, 0.0001)
+}
+
+func TestState_GetComplex64(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	var c complex64 = complex(2, 3)
+	st.Set("complex64", c)
+	cRes, ok := st.GetComplex64("complex64")
+	require.True(t, ok)
+	require.Equal(t, c, cRes)
+
+	st.Set("wrong", "not complex64")
+	cRes, ok = st.GetComplex64("wrong")
+	require.False(t, ok)
+	require.Equal(t, complex64(0), cRes)
+
+	cRes, ok = st.GetComplex64("missing")
+	require.False(t, ok)
+	require.Equal(t, complex64(0), cRes)
+}
+
+func TestState_GetComplex128(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	c := complex(4, 5)
+	st.Set("complex128", c)
+	cRes, ok := st.GetComplex128("complex128")
+	require.True(t, ok)
+	require.Equal(t, c, cRes)
+
+	st.Set("wrong", "not complex128")
+	cRes, ok = st.GetComplex128("wrong")
+	require.False(t, ok)
+	require.Equal(t, complex128(0), cRes)
+
+	cRes, ok = st.GetComplex128("missing")
+	require.False(t, ok)
+	require.Equal(t, complex128(0), cRes)
+}
+
+func TestState_MustGet(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("exists", "value")
+	val := st.MustGet("exists")
+	require.Equal(t, "value", val)
+
+	// must-get on missing key should panic
+	require.Panics(t, func() {
+		_ = st.MustGet("missing")
+	})
+}
+
+func TestState_Has(t *testing.T) {
+	t.Parallel()
+
+	st := newState()
+
+	st.Set("key", "value")
+	require.True(t, st.Has("key"))
+}
+
+func TestState_Delete(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("key", "value")
+	st.Delete("key")
+	_, ok := st.Get("key")
+	require.False(t, ok)
+}
+
+func TestState_Reset(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("a", 1)
+	st.Set("b", 2)
+	st.Reset()
+	require.Equal(t, 0, st.Len())
+	require.Empty(t, st.Keys())
+}
+
+func TestState_Keys(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	keys := []string{"one", "two", "three"}
+	for _, k := range keys {
+		st.Set(k, k)
+	}
+
+	returnedKeys := st.Keys()
+	require.ElementsMatch(t, keys, returnedKeys)
+}
+
+func TestState_Len(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	require.Equal(t, 0, st.Len())
+
+	st.Set("a", "a")
+	require.Equal(t, 1, st.Len())
+
+	st.Set("b", "b")
+	require.Equal(t, 2, st.Len())
+
+	st.Delete("a")
+	require.Equal(t, 1, st.Len())
+}
+
+type testCase[T any] struct { //nolint:govet // It does not really matter for test
+	name     string
+	key      string
+	value    any
+	expected T
+	ok       bool
+}
+
+func runGenericTest[T any](t *testing.T, getter func(*State, string) (T, bool), tests []testCase[T]) {
+	t.Helper()
+
+	st := newState()
+	for _, tc := range tests {
+		st.Set(tc.key, tc.value)
+		got, ok := getter(st, tc.key)
+		require.Equal(t, tc.ok, ok, tc.name)
+		require.Equal(t, tc.expected, got, tc.name)
+	}
+}
+
+func TestState_GetGeneric(t *testing.T) {
+	t.Parallel()
+
+	runGenericTest[int](t, GetState[int], []testCase[int]{
+		{"int correct conversion", "num", 42, 42, true},
+		{"int wrong conversion from string", "str", "abc", 0, false},
+	})
+
+	runGenericTest[string](t, GetState[string], []testCase[string]{
+		{"string correct conversion", "strVal", "hello", "hello", true},
+		{"string wrong conversion from int", "intVal", 100, "", false},
+	})
+
+	runGenericTest[bool](t, GetState[bool], []testCase[bool]{
+		{"bool correct conversion", "flag", true, true, true},
+		{"bool wrong conversion from int", "intFlag", 1, false, false},
+	})
+
+	runGenericTest[float64](t, GetState[float64], []testCase[float64]{
+		{"float64 correct conversion", "pi", 3.14, 3.14, true},
+		{"float64 wrong conversion from int", "intVal", 10, 0.0, false},
+	})
+}
+
+func Test_MustGetStateGeneric(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("flag", true)
+	flag := MustGetState[bool](st, "flag")
+	require.True(t, flag)
+
+	// mismatched type should panic
+	require.Panics(t, func() {
+		_ = MustGetState[string](st, "flag")
+	})
+
+	// missing key should also panic
+	require.Panics(t, func() {
+		_ = MustGetState[string](st, "missing")
+	})
+}
+
+func Test_GetStateWithDefault(t *testing.T) {
+	t.Parallel()
+	st := newState()
+
+	st.Set("flag", true)
+	flag := GetStateWithDefault(st, "flag", false)
+	require.True(t, flag)
+
+	// mismatched type should return the default value
+	str := GetStateWithDefault(st, "flag", "default")
+	require.Equal(t, "default", str)
+
+	// missing key should return the default value
+	flag = GetStateWithDefault(st, "missing", false)
+	require.False(t, flag)
+}
+
+func BenchmarkState_Set(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+}
+
+func BenchmarkState_Get(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.Get(key)
+	}
+}
+
+func BenchmarkState_GetString(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, strconv.Itoa(i))
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetString(key)
+	}
+}
+
+func BenchmarkState_GetInt(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetInt(key)
+	}
+}
+
+func BenchmarkState_GetBool(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i%2 == 0)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetBool(key)
+	}
+}
+
+func BenchmarkState_GetFloat64(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, float64(i))
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetFloat64(key)
+	}
+}
+
+func BenchmarkState_MustGet(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.MustGet(key)
+	}
+}
+
+func BenchmarkState_GetStateGeneric(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		GetState[int](st, key)
+	}
+}
+
+func BenchmarkState_MustGetStateGeneric(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		MustGetState[int](st, key)
+	}
+}
+
+func BenchmarkState_GetStateWithDefault(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		GetStateWithDefault[int](st, key, 0)
+	}
+}
+
+func BenchmarkState_Has(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	// pre-populate the state
+	for i := 0; i < n; i++ {
+		st.Set("key"+strconv.Itoa(i), i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		st.Has("key" + strconv.Itoa(i%n))
+	}
+}
+
+func BenchmarkState_Delete(b *testing.B) {
+	b.ReportAllocs()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		st := newState()
+		st.Set("a", 1)
+		st.Delete("a")
+	}
+}
+
+func BenchmarkState_Reset(b *testing.B) {
+	b.ReportAllocs()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		st := newState()
+		// add a fixed number of keys before clearing
+		for j := 0; j < 100; j++ {
+			st.Set("key"+strconv.Itoa(j), j)
+		}
+		st.Reset()
+	}
+}
+
+func BenchmarkState_Keys(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	for i := 0; i < n; i++ {
+		st.Set("key"+strconv.Itoa(i), i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_ = st.Keys()
+	}
+}
+
+func BenchmarkState_Len(b *testing.B) {
+	b.ReportAllocs()
+
+	st := newState()
+	n := 1000
+	for i := 0; i < n; i++ {
+		st.Set("key"+strconv.Itoa(i), i)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_ = st.Len()
+	}
+}
+
+func BenchmarkState_GetUint(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with uint values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, uint(i)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetUint(key)
+	}
+}
+
+func BenchmarkState_GetInt8(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with int8 values (using modulo to stay in range).
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, int8(i%128)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetInt8(key)
+	}
+}
+
+func BenchmarkState_GetInt16(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with int16 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, int16(i)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetInt16(key)
+	}
+}
+
+func BenchmarkState_GetInt32(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with int32 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, int32(i)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetInt32(key)
+	}
+}
+
+func BenchmarkState_GetInt64(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with int64 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, int64(i))
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetInt64(key)
+	}
+}
+
+func BenchmarkState_GetUint8(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with uint8 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, uint8(i%256)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetUint8(key)
+	}
+}
+
+func BenchmarkState_GetUint16(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with uint16 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, uint16(i)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetUint16(key)
+	}
+}
+
+func BenchmarkState_GetUint32(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with uint32 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, uint32(i)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetUint32(key)
+	}
+}
+
+func BenchmarkState_GetUint64(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with uint64 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, uint64(i)) //nolint:gosec // This is a test
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetUint64(key)
+	}
+}
+
+func BenchmarkState_GetUintptr(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with uintptr values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, uintptr(i))
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetUintptr(key)
+	}
+}
+
+func BenchmarkState_GetFloat32(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with float32 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		st.Set(key, float32(i))
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetFloat32(key)
+	}
+}
+
+func BenchmarkState_GetComplex64(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with complex64 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		// Create a complex64 value with both real and imaginary parts.
+		st.Set(key, complex(float32(i), float32(i)))
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetComplex64(key)
+	}
+}
+
+func BenchmarkState_GetComplex128(b *testing.B) {
+	b.ReportAllocs()
+	st := newState()
+	n := 1000
+	// Pre-populate the state with complex128 values.
+	for i := 0; i < n; i++ {
+		key := "key" + strconv.Itoa(i)
+		// Create a complex128 value with both real and imaginary parts.
+		st.Set(key, complex(float64(i), float64(i)))
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		key := "key" + strconv.Itoa(i%n)
+		st.GetComplex128(key)
+	}
+}