diff --git a/internal/caches/list_file.go b/internal/caches/list_file.go
index 518cb77..d828e74 100644
--- a/internal/caches/list_file.go
+++ b/internal/caches/list_file.go
@@ -206,6 +206,10 @@ func (this *FileList) CleanPrefix(prefix string) error {
 		return nil
 	}
 
+	defer func() {
+		this.memoryCache.Clean()
+	}()
+
 	var count = int64(10000)
 	for {
 		result, err := this.db.Exec(`UPDATE "`+this.itemsTableName+`" SET expiredAt=0 WHERE id IN (SELECT id FROM "`+this.itemsTableName+`" WHERE expiredAt>0 AND createdAt<=? AND INSTR("key", ?)=1 LIMIT `+strconv.FormatInt(count, 10)+`)`, utils.UnixTime(), prefix)
diff --git a/internal/nodes/api_stream.go b/internal/nodes/api_stream.go
index 73f08e3..cc0b08f 100644
--- a/internal/nodes/api_stream.go
+++ b/internal/nodes/api_stream.go
@@ -2,6 +2,7 @@ package nodes
 
 import (
 	"context"
+	"crypto/tls"
 	"encoding/json"
 	"fmt"
 	"github.com/TeaOSLab/EdgeCommon/pkg/messageconfigs"
@@ -16,6 +17,7 @@ import (
 	"github.com/TeaOSLab/EdgeNode/internal/utils"
 	"github.com/iwind/TeaGo/logs"
 	"io"
+	"net"
 	"net/http"
 	"os/exec"
 	"strconv"
@@ -367,7 +369,28 @@ func (this *APIStream) handlePreheatCache(message *pb.NodeStreamMessage) error {
 
 	wg := sync.WaitGroup{}
 	wg.Add(len(msg.Keys))
-	client := http.Client{} // TODO 可以设置请求超时事件
+	client := &http.Client{
+		Timeout: 30 * time.Second, // TODO 可以设置请求超时时间
+		Transport: &http.Transport{
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				_, port, err := net.SplitHostPort(addr)
+				if err != nil {
+					return nil, err
+				}
+				return net.Dial(network, "127.0.0.1:"+port)
+			},
+			MaxIdleConns:          4096,
+			MaxIdleConnsPerHost:   32,
+			MaxConnsPerHost:       32,
+			IdleConnTimeout:       2 * time.Minute,
+			ExpectContinueTimeout: 1 * time.Second,
+			TLSHandshakeTimeout:   0,
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: true,
+			},
+		},
+	}
+	defer client.CloseIdleConnections()
 	errorMessages := []string{}
 	locker := sync.Mutex{}
 	for _, key := range msg.Keys {
@@ -381,7 +404,9 @@ func (this *APIStream) handlePreheatCache(message *pb.NodeStreamMessage) error {
 				locker.Unlock()
 				return
 			}
+
 			// TODO 可以在管理界面自定义Header
+			req.Header.Set("X-Cache-Action", "preheat")
 			req.Header.Set("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36")
 			req.Header.Set("Accept-Encoding", "gzip, deflate, br") // TODO 这里需要记录下缓存是否为gzip的
 			resp, err := client.Do(req)
diff --git a/internal/nodes/http_request_cache.go b/internal/nodes/http_request_cache.go
index 6c6e280..8b78fae 100644
--- a/internal/nodes/http_request_cache.go
+++ b/internal/nodes/http_request_cache.go
@@ -7,6 +7,7 @@ import (
 	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
 	"net/http"
 	"strconv"
+	"strings"
 	"time"
 )
 
@@ -20,6 +21,12 @@ func (this *HTTPRequest) doCacheRead() (shouldStop bool) {
 	if this.web.Cache == nil || !this.web.Cache.IsOn || (len(cachePolicy.CacheRefs) == 0 && len(this.web.Cache.CacheRefs) == 0) {
 		return
 	}
+
+	// 判断是否在预热
+	if strings.HasPrefix(this.RawReq.RemoteAddr, "127.") && this.RawReq.Header.Get("X-Cache-Action") == "preheat" {
+		return
+	}
+
 	var addStatusHeader = this.web.Cache.AddStatusHeader
 	if addStatusHeader {
 		defer func() {