Move content encoding in the beginning of the middleware chain, update dependencies

mem/buffer.go

@@ -0,0 +1,33 @@
+package mem
+
+import (
+	"bytes"
+	"sync"
+)
+
+type BufferPool struct {
+	pool sync.Pool
+}
+
+func NewBufferPool() *BufferPool {
+	p := &BufferPool{
+		pool: sync.Pool{
+			New: func() any {
+				return &bytes.Buffer{}
+			},
+		},
+	}
+
+	return p
+}
+
+func (p *BufferPool) Get() *bytes.Buffer {
+	buf := p.pool.Get().(*bytes.Buffer)
+	buf.Reset()
+
+	return buf
+}
+
+func (p *BufferPool) Put(buf *bytes.Buffer) {
+	p.pool.Put(buf)
+}