内容压缩算法使用Pool管理

internal/compressions/reader.go

@@ -2,7 +2,14 @@
 
 package compressions
 
+import "io"
+
 type Reader interface {
 	Read(p []byte) (n int, err error)
+	Reset(reader io.Reader) error
+	RawClose() error
 	Close() error
+
+	SetPool(pool *ReaderPool)
+	ResetFinish()
 }

internal/compressions/reader_base.go

@@ -0,0 +1,26 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+type BaseReader struct {
+	pool *ReaderPool
+
+	isFinished bool
+}
+
+func (this *BaseReader) SetPool(pool *ReaderPool) {
+	this.pool = pool
+}
+
+func (this *BaseReader) Finish(obj Reader) error {
+	err := obj.RawClose()
+	if err == nil && this.pool != nil && !this.isFinished {
+		this.pool.Put(obj)
+	}
+	this.isFinished = true
+	return err
+}
+
+func (this *BaseReader) ResetFinish() {
+	this.isFinished = false
+}

internal/compressions/reader_brotli.go

@@ -9,10 +9,16 @@ import (
 )
 
 type BrotliReader struct {
+	BaseReader
+
 	reader *brotli.Reader
 }
 
 func NewBrotliReader(reader io.Reader) (Reader, error) {
+	return sharedBrotliReaderPool.Get(reader)
+}
+
+func newBrotliReader(reader io.Reader) (Reader, error) {
 	return &BrotliReader{reader: brotli.NewReader(reader)}, nil
 }
 
@@ -24,6 +30,14 @@ func (this *BrotliReader) Read(p []byte) (n int, err error) {
 	return
 }
 
-func (this *BrotliReader) Close() error {
+func (this *BrotliReader) Reset(reader io.Reader) error {
+	return this.reader.Reset(reader)
+}
+
+func (this *BrotliReader) RawClose() error {
 	return nil
 }
+
+func (this *BrotliReader) Close() error {
+	return this.Finish(this)
+}

internal/compressions/reader_brotli_test.go

@@ -0,0 +1,51 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions_test
+
+import (
+	"bytes"
+	"github.com/TeaOSLab/EdgeNode/internal/compressions"
+	"io"
+	"testing"
+)
+
+func TestBrotliReader(t *testing.T) {
+	for _, testString := range []string{"Hello", "World", "Ni", "Hao"} {
+		t.Log("===", testString, "===")
+		var buf = &bytes.Buffer{}
+		writer, err := compressions.NewBrotliWriter(buf, 5)
+		if err != nil {
+			t.Fatal(err)
+		}
+		_, err = writer.Write([]byte(testString))
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = writer.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		reader, err := compressions.NewBrotliReader(buf)
+		if err != nil {
+			t.Fatal(err)
+		}
+		var data = make([]byte, 4096)
+		for {
+			n, err := reader.Read(data)
+			if n > 0 {
+				t.Log(string(data[:n]))
+			}
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				t.Fatal(err)
+			}
+		}
+		err = reader.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}

internal/compressions/reader_deflate.go

@@ -8,10 +8,16 @@ import (
 )
 
 type DeflateReader struct {
+	BaseReader
+
 	reader io.ReadCloser
 }
 
 func NewDeflateReader(reader io.Reader) (Reader, error) {
+	return sharedDeflateReaderPool.Get(reader)
+}
+
+func newDeflateReader(reader io.Reader) (Reader, error) {
 	return &DeflateReader{reader: flate.NewReader(reader)}, nil
 }
 
@@ -19,6 +25,15 @@ func (this *DeflateReader) Read(p []byte) (n int, err error) {
 	return this.reader.Read(p)
 }
 
-func (this *DeflateReader) Close() error {
+func (this *DeflateReader) Reset(reader io.Reader) error {
+	this.reader = flate.NewReader(reader)
+	return nil
+}
+
+func (this *DeflateReader) RawClose() error {
 	return this.reader.Close()
 }
+
+func (this *DeflateReader) Close() error {
+	return this.Finish(this)
+}

internal/compressions/reader_deflate_test.go

@@ -0,0 +1,51 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions_test
+
+import (
+	"bytes"
+	"github.com/TeaOSLab/EdgeNode/internal/compressions"
+	"io"
+	"testing"
+)
+
+func TestDeflateReader(t *testing.T) {
+	for _, testString := range []string{"Hello", "World", "Ni", "Hao"} {
+		t.Log("===", testString, "===")
+		var buf = &bytes.Buffer{}
+		writer, err := compressions.NewDeflateWriter(buf, 5)
+		if err != nil {
+			t.Fatal(err)
+		}
+		_, err = writer.Write([]byte(testString))
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = writer.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		reader, err := compressions.NewDeflateReader(buf)
+		if err != nil {
+			t.Fatal(err)
+		}
+		var data = make([]byte, 4096)
+		for {
+			n, err := reader.Read(data)
+			if n > 0 {
+				t.Log(string(data[:n]))
+			}
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				t.Fatal(err)
+			}
+		}
+		err = reader.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}

internal/compressions/reader_gzip.go

@@ -8,10 +8,16 @@ import (
 )
 
 type GzipReader struct {
+	BaseReader
+
 	reader *gzip.Reader
 }
 
 func NewGzipReader(reader io.Reader) (Reader, error) {
+	return sharedGzipReaderPool.Get(reader)
+}
+
+func newGzipReader(reader io.Reader) (Reader, error) {
 	r, err := gzip.NewReader(reader)
 	if err != nil {
 		return nil, err
@@ -25,6 +31,14 @@ func (this *GzipReader) Read(p []byte) (n int, err error) {
 	return this.reader.Read(p)
 }
 
-func (this *GzipReader) Close() error {
+func (this *GzipReader) Reset(reader io.Reader) error {
+	return this.reader.Reset(reader)
+}
+
+func (this *GzipReader) RawClose() error {
 	return this.reader.Close()
 }
+
+func (this *GzipReader) Close() error {
+	return this.Finish(this)
+}

internal/compressions/reader_gzip_test.go

@@ -1,68 +1,106 @@
 // Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
 
-package compressions
+package compressions_test
 
 import (
 	"bytes"
-	"errors"
-	"github.com/TeaOSLab/EdgeNode/internal/caches"
+	"github.com/TeaOSLab/EdgeNode/internal/compressions"
+	"github.com/iwind/TeaGo/rands"
+	"github.com/iwind/TeaGo/types"
 	"io"
-	"os"
+	"strings"
 	"testing"
 )
 
 func TestGzipReader(t *testing.T) {
-	fp, err := os.Open("/Users/WorkSpace/EdgeProject/EdgeCache/p43/36/7e/367e02720713fe05b66573a1d69b4f0a.cache")
-	if err != nil {
-		// not fatal
-		t.Log(err)
-		return
-	}
-	defer func() {
-		_ = fp.Close()
-	}()
-
-	var buf = make([]byte, 32*1024)
-	cacheReader := caches.NewFileReader(fp)
-	err = cacheReader.Init()
+	for _, testString := range []string{"Hello", "World", "Ni", "Hao"} {
+		t.Log("===", testString, "===")
+		var buf = &bytes.Buffer{}
+		writer, err := compressions.NewGzipWriter(buf, 5)
 		if err != nil {
 			t.Fatal(err)
 		}
-	var headerBuf = []byte{}
-	err = cacheReader.ReadHeader(buf, func(n int) (goNext bool, err error) {
-		headerBuf = append(headerBuf, buf[:n]...)
-		for {
-			nIndex := bytes.Index(headerBuf, []byte{'\n'})
-			if nIndex >= 0 {
-				row := headerBuf[:nIndex]
-				spaceIndex := bytes.Index(row, []byte{':'})
-				if spaceIndex <= 0 {
-					return false, errors.New("invalid header '" + string(row) + "'")
+		_, err = writer.Write([]byte(testString))
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = writer.Close()
+		if err != nil {
+			t.Fatal(err)
 		}
 
-				headerBuf = headerBuf[nIndex+1:]
-			} else {
+		reader, err := compressions.NewGzipReader(buf)
+		if err != nil {
+			t.Fatal(err)
+		}
+		var data = make([]byte, 4096)
+		for {
+			n, err := reader.Read(data)
+			if n > 0 {
+				t.Log(string(data[:n]))
+			}
+			if err != nil {
+				if err == io.EOF {
 					break
 				}
+				t.Fatal(err)
 			}
-		return true, nil
-	})
-
-	reader, err := NewGzipReader(cacheReader)
+		}
+		err = reader.Close()
 		if err != nil {
 			t.Fatal(err)
 		}
-
-	for {
-		n, err := reader.Read(buf)
-		if err != nil {
-			if err != io.EOF {
-				t.Fatal(err)
-			} else {
-				break
-			}
-		}
-		t.Log(string(buf[:n]))
-		_ = n
+	}
+}
+
+func BenchmarkGzipReader(b *testing.B) {
+	var randomData = func() []byte {
+		var b = strings.Builder{}
+		for i := 0; i < 1024; i++ {
+			b.WriteString(types.String(rands.Int64() % 10))
+		}
+		return []byte(b.String())
+	}
+
+	var buf = &bytes.Buffer{}
+	writer, err := compressions.NewGzipWriter(buf, 5)
+	if err != nil {
+		b.Fatal(err)
+	}
+	_, err = writer.Write(randomData())
+	if err != nil {
+		b.Fatal(err)
+	}
+	err = writer.Close()
+	if err != nil {
+		b.Fatal(err)
+	}
+
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		var newBytes = make([]byte, buf.Len())
+		copy(newBytes, buf.Bytes())
+		reader, err := compressions.NewGzipReader(bytes.NewReader(newBytes))
+		if err != nil {
+			b.Fatal(err)
+		}
+		var data = make([]byte, 4096)
+		for {
+			n, err := reader.Read(data)
+			if n > 0 {
+				_ = data[:n]
+			}
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				b.Fatal(err)
+			}
+		}
+		err = reader.Close()
+		if err != nil {
+			b.Fatal(err)
+		}
 	}
 }

internal/compressions/reader_pool.go

@@ -0,0 +1,56 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"io"
+)
+
+type ReaderPool struct {
+	c       chan Reader
+	newFunc func(reader io.Reader) (Reader, error)
+}
+
+func NewReaderPool(maxSize int, newFunc func(reader io.Reader) (Reader, error)) *ReaderPool {
+	if maxSize <= 0 {
+		maxSize = 1024
+	}
+
+	return &ReaderPool{
+		c:       make(chan Reader, maxSize),
+		newFunc: newFunc,
+	}
+}
+
+func (this *ReaderPool) Get(parentReader io.Reader) (Reader, error) {
+	select {
+	case reader := <-this.c:
+		err := reader.Reset(parentReader)
+		if err != nil {
+			// create new
+			reader, err = this.newFunc(parentReader)
+			if err != nil {
+				return nil, err
+			}
+			reader.SetPool(this)
+			return reader, nil
+		}
+		reader.ResetFinish()
+		return reader, nil
+	default:
+		// create new
+		reader, err := this.newFunc(parentReader)
+		if err != nil {
+			return nil, err
+		}
+		reader.SetPool(this)
+		return reader, nil
+	}
+}
+
+func (this *ReaderPool) Put(reader Reader) {
+	select {
+	case this.c <- reader:
+	default:
+	}
+}

internal/compressions/reader_pool_brotli.go

@@ -0,0 +1,20 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"io"
+)
+
+var sharedBrotliReaderPool *ReaderPool
+
+func init() {
+	var maxSize = utils.SystemMemoryGB() * 256
+	if maxSize == 0 {
+		maxSize = 256
+	}
+	sharedBrotliReaderPool = NewReaderPool(maxSize, func(reader io.Reader) (Reader, error) {
+		return newBrotliReader(reader)
+	})
+}

internal/compressions/reader_pool_deflate.go

@@ -0,0 +1,20 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"io"
+)
+
+var sharedDeflateReaderPool *ReaderPool
+
+func init() {
+	var maxSize = utils.SystemMemoryGB() * 256
+	if maxSize == 0 {
+		maxSize = 256
+	}
+	sharedDeflateReaderPool = NewReaderPool(maxSize, func(reader io.Reader) (Reader, error) {
+		return newDeflateReader(reader)
+	})
+}

internal/compressions/reader_pool_gzip.go

@@ -0,0 +1,20 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"io"
+)
+
+var sharedGzipReaderPool *ReaderPool
+
+func init() {
+	var maxSize = utils.SystemMemoryGB() * 256
+	if maxSize == 0 {
+		maxSize = 256
+	}
+	sharedGzipReaderPool = NewReaderPool(maxSize, func(reader io.Reader) (Reader, error) {
+		return newGzipReader(reader)
+	})
+}

internal/compressions/utils.go

@@ -37,7 +37,6 @@ func NewReader(reader io.Reader, contentEncoding ContentEncoding) (Reader, error
 }
 
 // NewWriter 获取Writer
-// TODO 考虑重用Writer
 func NewWriter(writer io.Writer, compressType serverconfigs.HTTPCompressionType, level int) (Writer, error) {
 	switch compressType {
 	case serverconfigs.HTTPCompressionTypeGzip:

internal/compressions/writer.go

@@ -2,9 +2,16 @@
 
 package compressions
 
+import "io"
+
 type Writer interface {
 	Write(p []byte) (int, error)
 	Flush() error
+	Reset(writer io.Writer)
+	RawClose() error
 	Close() error
 	Level() int
+
+	SetPool(pool *WriterPool)
+	ResetFinish()
 }

internal/compressions/writer_base.go

@@ -0,0 +1,26 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+type BaseWriter struct {
+	pool *WriterPool
+
+	isFinished bool
+}
+
+func (this *BaseWriter) SetPool(pool *WriterPool) {
+	this.pool = pool
+}
+
+func (this *BaseWriter) Finish(obj Writer) error {
+	err := obj.RawClose()
+	if err == nil && this.pool != nil && !this.isFinished {
+		this.pool.Put(obj)
+	}
+	this.isFinished = true
+	return err
+}
+
+func (this *BaseWriter) ResetFinish() {
+	this.isFinished = false
+}

internal/compressions/writer_brotli.go

@@ -8,11 +8,17 @@ import (
 )
 
 type BrotliWriter struct {
+	BaseWriter
+
 	writer *brotli.Writer
 	level  int
 }
 
 func NewBrotliWriter(writer io.Writer, level int) (Writer, error) {
+	return sharedBrotliWriterPool.Get(writer, level)
+}
+
+func newBrotliWriter(writer io.Writer, level int) (*BrotliWriter, error) {
 	if level <= 0 {
 		level = brotli.BestSpeed
 	} else if level > brotli.BestCompression {
@@ -35,10 +41,18 @@ func (this *BrotliWriter) Flush() error {
 	return this.writer.Flush()
 }
 
-func (this *BrotliWriter) Close() error {
+func (this *BrotliWriter) Reset(newWriter io.Writer) {
+	this.writer.Reset(newWriter)
+}
+
+func (this *BrotliWriter) RawClose() error {
 	return this.writer.Close()
 }
 
+func (this *BrotliWriter) Close() error {
+	return this.Finish(this)
+}
+
 func (this *BrotliWriter) Level() int {
 	return this.level
 }

internal/compressions/writer_deflate.go

@@ -8,11 +8,17 @@ import (
 )
 
 type DeflateWriter struct {
+	BaseWriter
+
 	writer *flate.Writer
 	level  int
 }
 
 func NewDeflateWriter(writer io.Writer, level int) (Writer, error) {
+	return sharedDeflateWriterPool.Get(writer, level)
+}
+
+func newDeflateWriter(writer io.Writer, level int) (Writer, error) {
 	if level <= 0 {
 		level = flate.BestSpeed
 	} else if level > flate.BestCompression {
@@ -38,10 +44,18 @@ func (this *DeflateWriter) Flush() error {
 	return this.writer.Flush()
 }
 
-func (this *DeflateWriter) Close() error {
+func (this *DeflateWriter) Reset(writer io.Writer) {
+	this.writer.Reset(writer)
+}
+
+func (this *DeflateWriter) RawClose() error {
 	return this.writer.Close()
 }
 
+func (this *DeflateWriter) Close() error {
+	return this.Finish(this)
+}
+
 func (this *DeflateWriter) Level() int {
 	return this.level
 }

internal/compressions/writer_deflate_test.go

@@ -0,0 +1,36 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions_test
+
+import (
+	"bytes"
+	"github.com/TeaOSLab/EdgeNode/internal/compressions"
+	"strings"
+	"testing"
+)
+
+func BenchmarkDeflateWriter_Write(b *testing.B) {
+	var data = []byte(strings.Repeat("A", 1024))
+
+	for i := 0; i < b.N; i++ {
+		var buf = &bytes.Buffer{}
+		writer, err := compressions.NewDeflateWriter(buf, 5)
+		if err != nil {
+			b.Fatal(err)
+		}
+
+		for j := 0; j < 100; j++ {
+			_, err = writer.Write(data)
+			if err != nil {
+				b.Fatal(err)
+			}
+
+			/**err = writer.Flush()
+			if err != nil {
+				b.Fatal(err)
+			}**/
+		}
+
+		_ = writer.Close()
+	}
+}

internal/compressions/writer_encoding.go

@@ -1,51 +0,0 @@
-// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
-
-package compressions
-
-import (
-	"bytes"
-	"io"
-)
-
-type EncodingWriter struct {
-	contentEncoding ContentEncoding
-	writer          Writer
-	buf             *bytes.Buffer
-}
-
-func NewEncodingWriter(contentEncoding ContentEncoding, writer Writer) (Writer, error) {
-	return &EncodingWriter{
-		contentEncoding: contentEncoding,
-		writer:          writer,
-		buf:             &bytes.Buffer{},
-	}, nil
-}
-
-func (this *EncodingWriter) Write(p []byte) (int, error) {
-	return this.buf.Write(p)
-}
-
-func (this *EncodingWriter) Flush() error {
-	return this.writer.Flush()
-}
-
-func (this *EncodingWriter) Close() error {
-	reader, err := NewReader(this.buf, this.contentEncoding)
-	if err != nil {
-		_ = this.writer.Close()
-		return err
-	}
-	_, err = io.Copy(this.writer, reader)
-	if err != nil {
-		_ = reader.Close()
-		_ = this.writer.Close()
-		return err
-	}
-
-	_ = reader.Close()
-	return this.writer.Close()
-}
-
-func (this *EncodingWriter) Level() int {
-	return this.writer.Level()
-}

internal/compressions/writer_encoding_test.go

@@ -1,47 +0,0 @@
-// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
-
-package compressions
-
-import (
-	"bytes"
-	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
-	"testing"
-)
-
-func TestNewEncodingWriter(t *testing.T) {
-	var buf = &bytes.Buffer{}
-
-	subWriter, err := NewWriter(buf, serverconfigs.HTTPCompressionTypeGzip, 5)
-	if err != nil {
-		t.Fatal(err)
-	}
-	writer, err := NewEncodingWriter(ContentEncodingGzip, subWriter)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	gzipBuf := &bytes.Buffer{}
-	gzipWriter, err := NewGzipWriter(gzipBuf, 5)
-	if err != nil {
-		t.Fatal(err)
-	}
-	_, err = gzipWriter.Write([]byte("Hello"))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	_, err = gzipWriter.Write([]byte("World"))
-	if err != nil {
-		t.Fatal(err)
-	}
-	_ = gzipWriter.Close()
-
-	_, err = writer.Write(gzipBuf.Bytes())
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	_ = writer.Close()
-
-	t.Log(buf.String())
-}

internal/compressions/writer_gzip.go

@@ -8,11 +8,17 @@ import (
 )
 
 type GzipWriter struct {
+	BaseWriter
+
 	writer *gzip.Writer
 	level  int
 }
 
 func NewGzipWriter(writer io.Writer, level int) (Writer, error) {
+	return sharedGzipWriterPool.Get(writer, level)
+}
+
+func newGzipWriter(writer io.Writer, level int) (Writer, error) {
 	if level <= 0 {
 		level = gzip.BestSpeed
 	} else if level > gzip.BestCompression {
@@ -38,10 +44,18 @@ func (this *GzipWriter) Flush() error {
 	return this.writer.Flush()
 }
 
-func (this *GzipWriter) Close() error {
+func (this *GzipWriter) Reset(writer io.Writer) {
+	this.writer.Reset(writer)
+}
+
+func (this *GzipWriter) RawClose() error {
 	return this.writer.Close()
 }
 
+func (this *GzipWriter) Close() error {
+	return this.Finish(this)
+}
+
 func (this *GzipWriter) Level() int {
 	return this.level
 }

internal/compressions/writer_pool.go

@@ -0,0 +1,61 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"io"
+)
+
+type WriterPool struct {
+	m       map[int]chan Writer // level => chan Writer
+	newFunc func(writer io.Writer, level int) (Writer, error)
+}
+
+func NewWriterPool(maxSize int, maxLevel int, newFunc func(writer io.Writer, level int) (Writer, error)) *WriterPool {
+	if maxSize <= 0 {
+		maxSize = 1024
+	}
+
+	var m = map[int]chan Writer{}
+	for i := 0; i <= maxLevel; i++ {
+		m[i] = make(chan Writer, maxSize)
+	}
+
+	return &WriterPool{
+		m:       m,
+		newFunc: newFunc,
+	}
+}
+
+func (this *WriterPool) Get(parentWriter io.Writer, level int) (Writer, error) {
+	c, ok := this.m[level]
+	if !ok {
+		c = this.m[0]
+	}
+
+	select {
+	case writer := <-c:
+		writer.Reset(parentWriter)
+		writer.ResetFinish()
+		return writer, nil
+	default:
+		writer, err := this.newFunc(parentWriter, level)
+		if err != nil {
+			return nil, err
+		}
+		writer.SetPool(this)
+		return writer, nil
+	}
+}
+
+func (this *WriterPool) Put(writer Writer) {
+	var level = writer.Level()
+	c, ok := this.m[level]
+	if !ok {
+		c = this.m[0]
+	}
+	select {
+	case c <- writer:
+	default:
+	}
+}

internal/compressions/writer_pool_brotli.go

@@ -0,0 +1,21 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"github.com/andybalholm/brotli"
+	"io"
+)
+
+var sharedBrotliWriterPool *WriterPool
+
+func init() {
+	var maxSize = utils.SystemMemoryGB() * 256
+	if maxSize == 0 {
+		maxSize = 256
+	}
+	sharedBrotliWriterPool = NewWriterPool(maxSize, brotli.BestCompression, func(writer io.Writer, level int) (Writer, error) {
+		return newBrotliWriter(writer, level)
+	})
+}

internal/compressions/writer_pool_deflate.go

@@ -0,0 +1,21 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"compress/flate"
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"io"
+)
+
+var sharedDeflateWriterPool *WriterPool
+
+func init() {
+	var maxSize = utils.SystemMemoryGB() * 256
+	if maxSize == 0 {
+		maxSize = 256
+	}
+	sharedDeflateWriterPool = NewWriterPool(maxSize, flate.BestCompression, func(writer io.Writer, level int) (Writer, error) {
+		return newDeflateWriter(writer, level)
+	})
+}

internal/compressions/writer_pool_gzip.go

@@ -0,0 +1,21 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package compressions
+
+import (
+	"compress/gzip"
+	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"io"
+)
+
+var sharedGzipWriterPool *WriterPool
+
+func init() {
+	var maxSize = utils.SystemMemoryGB() * 256
+	if maxSize == 0 {
+		maxSize = 256
+	}
+	sharedGzipWriterPool = NewWriterPool(maxSize, gzip.BestCompression, func(writer io.Writer, level int) (Writer, error) {
+		return newGzipWriter(writer, level)
+	})
+}