diff --git a/internal/middleware/compression/pool_bench_test.go b/internal/middleware/compression/pool_bench_test.go
new file mode 100644
index 0000000..9573871
--- /dev/null
+++ b/internal/middleware/compression/pool_bench_test.go
@@ -0,0 +1,152 @@
+// Package compression 提供压缩 writer 池化效果测试。
+//
+// 该文件对比新建 vs 池化复用的分配差异。
+//
+// 测试场景：
+//   - NewWriter: 每次新建 gzip.Writer
+//   - PoolWriter: 从 sync.Pool 获取复用
+//
+// 目标：池化后 ≤2 allocs/op
+//
+// 作者：xfy
+package compression
+
+import (
+	"bytes"
+	"compress/gzip"
+	"sync"
+	"testing"
+
+	"github.com/valyala/fasthttp"
+	"rua.plus/lolly/internal/benchmark/tools"
+	"rua.plus/lolly/internal/config"
+)
+
+// BenchmarkGzipPool_GetPut 测试 gzip.Writer 池直接操作。
+//
+// 验证 sync.Pool 的分配效果。
+func BenchmarkGzipPool_GetPut(b *testing.B) {
+	pool := &sync.Pool{
+		New: func() any {
+			return gzip.NewWriter(nil)
+		},
+	}
+
+	buf := bytes.NewBuffer(nil)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for b.Loop() {
+		w := pool.Get().(*gzip.Writer)
+		w.Reset(buf)
+		// 模拟使用
+		_, _ = w.Write([]byte("test data"))
+		_ = w.Close()
+		buf.Reset()
+		pool.Put(w)
+	}
+}
+
+// BenchmarkGzipWriter_New 测试每次新建 gzip.Writer。
+//
+// 对比基准：每次创建新 Writer。
+func BenchmarkGzipWriter_New(b *testing.B) {
+	data := tools.GenerateTestData(tools.Size1KB)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for b.Loop() {
+		buf := bytes.NewBuffer(nil)
+		w := gzip.NewWriter(buf)
+		_, _ = w.Write(data)
+		_ = w.Close()
+	}
+}
+
+// BenchmarkGzipWriter_Pool 测试池化复用 gzip.Writer。
+//
+// 目标：≤2 allocs/op
+func BenchmarkGzipWriter_Pool(b *testing.B) {
+	data := tools.GenerateTestData(tools.Size1KB)
+
+	cfg := &config.CompressionConfig{
+		Type:    "gzip",
+		Level:   6,
+		MinSize: 100,
+		Types:   []string{"application/json"},
+	}
+	mw, _ := New(cfg)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for b.Loop() {
+		_ = mw.compressGzip(data)
+	}
+}
+
+// BenchmarkCompressionMiddleware_Pool 测试中间件池化效果。
+//
+// 模拟完整请求处理路径。
+func BenchmarkCompressionMiddleware_Pool(b *testing.B) {
+	cfg := &config.CompressionConfig{
+		Type:    "gzip",
+		Level:   6,
+		MinSize: 100,
+		Types:   []string{"text/html", "application/json"},
+	}
+	mw, _ := New(cfg)
+
+	// 创建测试响应
+	data := tools.GenerateTestData(tools.Size10KB)
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for b.Loop() {
+		ctx := &fasthttp.RequestCtx{}
+		ctx.Request.Header.SetMethod(fasthttp.MethodGet)
+		ctx.Request.SetRequestURI("/test")
+		ctx.Request.Header.Set("Accept-Encoding", "gzip")
+		ctx.Response.Header.Set("Content-Type", "application/json")
+		ctx.Response.SetBody(data)
+
+		// 模拟中间件处理
+		handler := mw.Process(func(ctx *fasthttp.RequestCtx) {
+			ctx.Response.SetBody(data)
+		})
+		handler(ctx)
+	}
+}
+
+// BenchmarkGzipCompress_Sizes 测试不同数据大小的池化效果。
+func BenchmarkGzipCompress_Sizes(b *testing.B) {
+	cfg := &config.CompressionConfig{
+		Type:    "gzip",
+		Level:   6,
+		MinSize: 100,
+	}
+	mw, _ := New(cfg)
+
+	sizes := []struct {
+		name string
+		data []byte
+	}{
+		{"100B", tools.GenerateTestData(100)},
+		{"1KB", tools.GenerateTestData(tools.Size1KB)},
+		{"10KB", tools.GenerateTestData(tools.Size10KB)},
+		{"100KB", tools.GenerateTestData(tools.Size100KB)},
+	}
+
+	for _, tc := range sizes {
+		b.Run(tc.name, func(b *testing.B) {
+			b.ReportAllocs()
+			b.ResetTimer()
+			for b.Loop() {
+				_ = mw.compressGzip(tc.data)
+			}
+		})
+	}
+}
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