forked from mirrors/gotosocial
bee8458a2d
* feat: add rate limit middleware * chore: update vendor dir * chore: update readme with new dependency * chore: add rate limit infos to swagger.md file * refactor: add ipv6 mask limiter option Add IPv6 CIDR /64 mask * refactor: increase rate limit to 1000 Address https://github.com/superseriousbusiness/gotosocial/pull/741#discussion_r945584800 Co-authored-by: tobi <31960611+tsmethurst@users.noreply.github.com>
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
package bytebuffer
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import (
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"sync"
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"unsafe"
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)
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// ByteBuffer is a wrapper around a slice to reduce memory allocation while handling blob of data.
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type ByteBuffer struct {
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blob []byte
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}
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// New creates a new ByteBuffer instance.
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func New() *ByteBuffer {
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entry := bufferPool.Get().(*ByteBuffer)
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entry.blob = entry.blob[:0]
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return entry
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}
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// Bytes returns the content buffer.
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func (buffer *ByteBuffer) Bytes() []byte {
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return buffer.blob
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}
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// String returns the content buffer.
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func (buffer *ByteBuffer) String() string {
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// Copied from strings.(*Builder).String
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return *(*string)(unsafe.Pointer(&buffer.blob)) // nolint: gosec
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}
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// Concat appends given arguments to blob content
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func (buffer *ByteBuffer) Concat(args ...string) {
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for i := range args {
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buffer.blob = append(buffer.blob, args[i]...)
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}
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}
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// Close recycles underlying resources of encoder.
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func (buffer *ByteBuffer) Close() {
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// Proper usage of a sync.Pool requires each entry to have approximately
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// the same memory cost. To obtain this property when the stored type
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// contains a variably-sized buffer, we add a hard limit on the maximum buffer
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// to place back in the pool.
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//
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// See https://golang.org/issue/23199
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if buffer != nil && cap(buffer.blob) < (1<<16) {
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bufferPool.Put(buffer)
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}
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}
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// A byte buffer pool to reduce memory allocation pressure.
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var bufferPool = &sync.Pool{
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New: func() interface{} {
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return &ByteBuffer{
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blob: make([]byte, 0, 1024),
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}
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},
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}
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