refactor(http): performance improvement

- Introduced a sync.Pool for ResponseRecorder to optimize memory usage.
- Updated ServeHTTP method to utilize the new GetResponseRecorder and PutResponseRecorder functions.
- Adjusted NewResponseRecorder to leverage the pooling mechanism.

internal/entrypoint/entrypoint.go

@@ -97,9 +97,12 @@ func (ep *Entrypoint) FindRoute(s string) types.HTTPRoute {
 
 func (ep *Entrypoint) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if ep.accessLogger != nil {
-		rec := accesslog.NewResponseRecorder(w)
+		rec := accesslog.GetResponseRecorder(w)
 		w = rec
-		defer ep.accessLogger.Log(r, rec.Response())
+		defer func() {
+			ep.accessLogger.Log(r, rec.Response())
+			accesslog.PutResponseRecorder(rec)
+		}()
 	}
 
 	route := ep.findRouteFunc(r.Host)

internal/logging/accesslog/response_recorder.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net"
 	"net/http"
+	"sync"
 )
 
 type ResponseRecorder struct {
@@ -13,14 +14,30 @@ type ResponseRecorder struct {
 	resp http.Response
 }
 
-func NewResponseRecorder(w http.ResponseWriter) *ResponseRecorder {
-	return &ResponseRecorder{
-		w: w,
-		resp: http.Response{
-			StatusCode: http.StatusOK,
-			Header:     w.Header(),
-		},
+var recorderPool = sync.Pool{
+	New: func() any {
+		return &ResponseRecorder{}
+	},
+}
+
+func GetResponseRecorder(w http.ResponseWriter) *ResponseRecorder {
+	r := recorderPool.Get().(*ResponseRecorder)
+	r.w = w
+	r.resp = http.Response{
+		StatusCode: http.StatusOK,
+		Header:     w.Header(),
 	}
+	return r
+}
+
+func PutResponseRecorder(r *ResponseRecorder) {
+	r.w = nil
+	r.resp = http.Response{}
+	recorderPool.Put(r)
+}
+
+func NewResponseRecorder(w http.ResponseWriter) *ResponseRecorder {
+	return GetResponseRecorder(w)
 }
 
 func (w *ResponseRecorder) Unwrap() http.ResponseWriter {