internal/buffer: initial implementation of the package

internal/buffer/buffer.go

@@ -0,0 +1,23 @@
+// Package buffer implements a reusable buffer pool.
+package buffer
+
+import (
+	"bytes"
+	"sync"
+)
+
+func Get() *bytes.Buffer {
+	return pool.Get().(*bytes.Buffer)
+}
+
+func Put(b *bytes.Buffer) {
+	b.Reset()
+
+	pool.Put(b)
+}
+
+var pool = sync.Pool{
+	New: func() interface{} {
+		return new(bytes.Buffer)
+	},
+}