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Clarify the effect of InitialMmapSize on Windows platform

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Signed-off-by: Benjamin Wang <benjamin.ahrtr@gmail.com>
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Benjamin Wang 2025-04-09 15:22:03 +01:00
parent fd0af9db8c
commit 892aad074e
1 changed files with 6 additions and 0 deletions
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6
db.go
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@ -1259,6 +1259,12 @@ type Options struct {
// If <=0, the initial map size is 0.
// If initialMmapSize is smaller than the previous database size,
// it takes no effect.
//
// Note: On Windows, due to platform limitations, the database file size
// will be immediately resized to match `InitialMmapSize` (aligned to page size)
// when the DB is opened. On non-Windows platforms, the file size will grow
// dynamically based on the actual amount of written data, regardless of `InitialMmapSize`.
// Refer to https://github.com/etcd-io/bbolt/issues/378#issuecomment-1378121966.
InitialMmapSize int
// PageSize overrides the default OS page size.