diff --git a/go.mod b/go.mod
index 6211db0..b48f271 100644
--- a/go.mod
+++ b/go.mod
@@ -21,7 +21,10 @@ require (
 	golang.org/x/sys v0.25.0
 )
 
-require golang.org/x/net v0.0.0-20190620200207-3b0461eec859
+require (
+	github.com/rs/dnscache v0.0.0-20230804202142-fc85eb664529
+	golang.org/x/net v0.0.0-20190620200207-3b0461eec859
+)
 
 require (
 	github.com/GeertJohan/go.rice v1.0.2 // indirect
@@ -38,5 +41,6 @@ require (
 	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect
+	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
 )
diff --git a/go.sum b/go.sum
index f71f436..59d7320 100644
--- a/go.sum
+++ b/go.sum
@@ -163,6 +163,8 @@ github.com/qjfoidnh/Baidu-Login v1.4.1/go.mod h1:oRFCmVYQka0KYwvbf2zS6UeMupgv0w1
 github.com/qjfoidnh/BaiduPCS-Go v0.0.0-20201218134534-d55d9918bd1b/go.mod h1:00iH1dQEStMeT3t+oeVrIucWcu3fFEaFYyygNxfOEv4=
 github.com/qjfoidnh/baidu-tools v1.2.0 h1:VoXJCN16xzL0xh1BOI2l2p80X5HwKB0PE4SgtX8wn30=
 github.com/qjfoidnh/baidu-tools v1.2.0/go.mod h1:TzIKHinLPcQbWxAROpqoSvYxM/kDeswfXJaQ2E1p4zs=
+github.com/rs/dnscache v0.0.0-20230804202142-fc85eb664529 h1:18kd+8ZUlt/ARXhljq+14TwAoKa61q6dX8jtwOf6DH8=
+github.com/rs/dnscache v0.0.0-20230804202142-fc85eb664529/go.mod h1:qe5TWALJ8/a1Lqznoc5BDHpYX/8HU60Hm2AwRmqzxqA=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
@@ -216,6 +218,8 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
diff --git a/requester/http_client.go b/requester/http_client.go
index 4a2f20e..f4a8908 100644
--- a/requester/http_client.go
+++ b/requester/http_client.go
@@ -8,6 +8,8 @@ import (
 	"net/http"
 	"net/http/cookiejar"
 	"time"
+
+	"github.com/rs/dnscache"
 )
 
 // HTTPClient http client
@@ -40,22 +42,46 @@ func dialTrace(ctx context.Context, network, addr string) (net.Conn, error) {
 	return traceConn{Conn: raw, id: id}, nil
 }
 
+func cacheDNS() *http.Transport {
+	resolver := &dnscache.Resolver{}
+
+	// 2. 自定义 DialContext：先查缓存，再拨号
+	dialer := &net.Dialer{
+		Timeout:   30 * time.Second,
+		KeepAlive: 30 * time.Second,
+	}
+	tr := &http.Transport{
+		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+			host, port, _ := net.SplitHostPort(addr)
+			// 缓存解析
+			ips, err := resolver.LookupHost(ctx, host)
+			if err != nil {
+				return nil, err
+			}
+			// 简单轮询 IP
+			ip := ips[0]
+			conn, err := dialer.DialContext(ctx, network, net.JoinHostPort(ip, port))
+			if err == nil {
+				return conn, nil
+			}
+
+			return nil, err
+		},
+		MaxIdleConns:        100,
+		IdleConnTimeout:     90 * time.Second,
+		TLSHandshakeTimeout: 10 * time.Second,
+	}
+	return tr
+}
+
 // NewHTTPClient 返回 HTTPClient 的指针,
 // 预设了一些配置
 func NewHTTPClient() *HTTPClient {
 	fmt.Println("new one")
 	h := &HTTPClient{
 		Client: http.Client{
-			Timeout: 50 * time.Second,
-			Transport: &http.Transport{
-				DialContext:           dialTrace,
-				MaxIdleConns:          20,
-				IdleConnTimeout:       90 * time.Second,
-				TLSHandshakeTimeout:   10 * time.Second,
-				ExpectContinueTimeout: 1 * time.Second,
-				// 关键：打开状态回调
-				DisableKeepAlives: false,
-			},
+			Timeout:   50 * time.Second,
+			Transport: cacheDNS(),
 		},
 		UserAgent: UserAgent,
 	}