fiber/docs/whats_new.md

id	title	sidebar_position
whats_new	🆕 Whats New in v3	2

:::caution

Its a draft, not finished yet.

:::

🎉 Welcome to Fiber v3

We are excited to announce the release of Fiber v3! 🚀

Fiber v3 is a major release with a lot of new features, improvements, and breaking changes. We have worked hard to make Fiber even faster, more flexible, and easier to use.

🚀 Highlights

Drop for old Go versions

Fiber v3 drops support for Go versions below 1.21. We recommend upgrading to Go 1.21 or higher to use Fiber v3.

App changes

We have made several changes to the Fiber app, including:

• Listen -> unified with config
• app.Config properties moved to listen config
  • DisableStartupMessage
  • EnablePrefork -> previously Prefork
  • EnablePrintRoutes
  • ListenerNetwork -> previously Network

new methods

• RegisterCustomBinder
• RegisterCustomConstraint
• NewCtxFunc

removed methods

• Mount -> Use app.Use() instead
• ListenTLS -> Use app.Listen() with tls.Config
• ListenTLSWithCertificate -> Use app.Listen() with tls.Config
• ListenMutualTLS -> Use app.Listen() with tls.Config
• ListenMutualTLSWithCertificate -> Use app.Listen() with tls.Config

changed methods

• Routing methods -> Get(), Post(), Put(), Delete(), Patch(), Options(), Trace(), Connect() and All()
• Use -> can be used for app mounting
• Test -> timeout changed to 1 second
• Listen -> has a config parameter
• Listener -> has a config parameter

Context change

interface

customizable

new methods

• AutoFormat -> ExpressJs like
• Host -> ExpressJs like
• Port -> ExpressJs like
• IsProxyTrusted
• Reset
• Schema -> ExpressJs like
• SendStream -> ExpressJs like
• SendString -> ExpressJs like
• String -> ExpressJs like
• ViewBind -> instead of Bind

removed methods

• AllParams -> c.Bind().URL() ?
• ParamsInt -> Params Generic
• QueryBool -> Query Generic
• QueryFloat -> Query Generic
• QueryInt -> Query Generic
• BodyParser -> c.Bind().Body()
• CookieParser -> c.Bind().Cookie()
• ParamsParser -> c.Bind().URL()
• RedirectToRoute -> c.Redirect().Route()
• RedirectBack -> c.Redirect().Back()
• ReqHeaderParser -> c.Bind().Header()

changed methods

• Bind -> for Binding instead of View, us c.ViewBind()
• Format -> Param: body interface{} -> handlers ...ResFmt
• Redirect -> c.Redirect().To()

Client package

Binding

Generic functions

Middleware refactoring

Session middleware

Filesystem middleware

Monitor middleware

Monitor middleware is now in Contrib package.

Migration guide

...