diff --git a/config/config.go b/config/config.go
index f28dfa6..db7b9dd 100644
--- a/config/config.go
+++ b/config/config.go
@@ -16,7 +16,7 @@ const (
 
 type (
 	EngineConf struct {
-		// TaskTimerPrecision // 全局任务的timer间隔
+		// TaskTimerPrecision 全局任务的timer间隔
 		TaskTimerPrecision time.Duration `json:",default=1s"`
 		// Mode 运行模式
 		Mode string `json:",default=dev,options=[dev,test,prod]"`
@@ -28,6 +28,10 @@ type (
 		WriteDeadline time.Duration `json:",default=0s"`
 		// Deadline 读+写数据超时时长,0为不超时
 		Deadline time.Duration `json:",default=0s"`
+		// SendChannelSize
+		SendChannelSize int `json:",default=1024"`
+		// WriteChannelSize
+		WriteChannelSize int `json:",default=1024"`
 	}
 )
 
diff --git a/conn/conn.go b/conn/conn.go
index e4c7aba..3a52c5d 100644
--- a/conn/conn.go
+++ b/conn/conn.go
@@ -22,7 +22,7 @@ type (
 	}
 )
 
-func NewConnection(id int64, rawC net.Conn) *Connection {
+func NewConnection(id int64, rawC net.Conn, sendSize, writeSize int) *Connection {
 	r := &Connection{
 		session: session.NewSession(id),
 
@@ -33,8 +33,8 @@ func NewConnection(id int64, rawC net.Conn) *Connection {
 		lastMid: 0,
 
 		chDie:   make(chan struct{}),
-		chSend:  make(chan PendingMessage, 128),
-		chWrite: make(chan []byte, 128),
+		chSend:  make(chan PendingMessage, sendSize),
+		chWrite: make(chan []byte, writeSize),
 	}
 	if _, ok := rawC.(*WSConn); ok {
 		r.typ = ConnTypeWS
diff --git a/engine.go b/engine.go
index 6be393d..5c161ee 100644
--- a/engine.go
+++ b/engine.go
@@ -107,7 +107,7 @@ func (ngin *Engine) Stop() {
 }
 
 func (ngin *Engine) handle(rawC net.Conn) *conn.Connection {
-	nc := conn.NewConnection(ngin.sessIdMgr.SessionID(), rawC)
+	nc := conn.NewConnection(ngin.sessIdMgr.SessionID(), rawC, ngin.SendChannelSize, ngin.WriteChannelSize)
 
 	ngin.evtMgr.OnConnected(nc)
 
diff --git a/go.mod b/go.mod
index e3e46f1..1ce62c1 100644
--- a/go.mod
+++ b/go.mod
@@ -3,12 +3,12 @@ module git.noahlan.cn/noahlan/nnet
 go 1.20
 
 require (
-	github.com/gorilla/websocket v1.5.0
-	github.com/panjf2000/ants/v2 v2.7.5
+	github.com/gorilla/websocket v1.5.1
+	github.com/panjf2000/ants/v2 v2.9.0
 )
 
 require (
-	git.noahlan.cn/noahlan/ntool v1.1.2
+	git.noahlan.cn/noahlan/ntool v1.2.5
 	github.com/goburrow/serial v0.1.0
 	google.golang.org/protobuf v1.28.2-0.20220831092852-f930b1dc76e8
 )
@@ -22,8 +22,9 @@ require (
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	go.opentelemetry.io/otel v1.14.0 // indirect
 	go.opentelemetry.io/otel/trace v1.14.0 // indirect
-	golang.org/x/crypto v0.10.0 // indirect
-	golang.org/x/sys v0.9.0 // indirect
-	golang.org/x/term v0.9.0 // indirect
-	golang.org/x/text v0.10.0 // indirect
+	golang.org/x/crypto v0.16.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
+	golang.org/x/term v0.15.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 )
diff --git a/go.sum b/go.sum
index ee50311..e9289ef 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ git.noahlan.cn/noahlan/ntool v1.1.1 h1:XtixcgmHj/BQ/9VQXFzSoQ7boKF+Q6gfjlrngFD5G
 git.noahlan.cn/noahlan/ntool v1.1.1/go.mod h1:pzoXErnQDLaHhvEHOGDoINf5VP1MDiU8NAcnaMEhxa4=
 git.noahlan.cn/noahlan/ntool v1.1.2 h1:XwQgR5BubZNstt6UEjyaY/k3Qsipph1C7dztKWs/RK4=
 git.noahlan.cn/noahlan/ntool v1.1.2/go.mod h1:pzoXErnQDLaHhvEHOGDoINf5VP1MDiU8NAcnaMEhxa4=
+git.noahlan.cn/noahlan/ntool v1.2.5 h1:sbafaRPKZJh89kAE6G0hyAjomZYhdofLnBQEhI6LbJA=
+git.noahlan.cn/noahlan/ntool v1.2.5/go.mod h1:pzoXErnQDLaHhvEHOGDoINf5VP1MDiU8NAcnaMEhxa4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -18,6 +20,8 @@ github.com/gookit/color v1.5.3 h1:twfIhZs4QLCtimkP7MOxlF3A0U/5cDPseRT9M/+2SCE=
 github.com/gookit/color v1.5.3/go.mod h1:NUzwzeehUfl7GIb36pqId+UGmRfQcU/WiiyTTeNjHtE=
 github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
 github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.1 h1:gmztn0JnHVt9JZquRuzLw3g4wouNVzKL15iLr/zn/QY=
+github.com/gorilla/websocket v1.5.1/go.mod h1:x3kM2JMyaluk02fnUJpQuwD2dCS5NDG2ZHL0uE0tcaY=
 github.com/jpillora/backoff v1.0.0 h1:uvFg412JmmHBHw7iwprIxkPMI+sGQ4kzOWsMeHnm2EA=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
@@ -27,6 +31,8 @@ github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APP
 github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/panjf2000/ants/v2 v2.7.5 h1:/vhh0Hza9G1vP1PdCj9hl6MUzCRbmtcTJL0OsnmytuU=
 github.com/panjf2000/ants/v2 v2.7.5/go.mod h1:KIBmYG9QQX5U2qzFP/yQJaq/nSb6rahS9iEHkrCMgM8=
+github.com/panjf2000/ants/v2 v2.9.0 h1:SztCLkVxBRigbg+vt0S5QvF5vxAbxbKt09/YfAJ0tEo=
+github.com/panjf2000/ants/v2 v2.9.0/go.mod h1:7ZxyxsqE4vvW0M7LSD8aI3cKwgFhBHbxnlN8mDqHa1I=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -36,6 +42,7 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
+github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
 go.opentelemetry.io/otel v1.14.0 h1:/79Huy8wbf5DnIPhemGB+zEPVwnN6fuQybr/SRXa6hM=
@@ -45,17 +52,24 @@ go.opentelemetry.io/otel/trace v1.14.0 h1:wp2Mmvj41tDsyAJXiWDWpfNsOiIyd38fy85pyK
 go.opentelemetry.io/otel/trace v1.14.0/go.mod h1:8avnQLK+CG77yNLUae4ea2JDQ6iT+gozhnZjy/rw9G8=
 golang.org/x/crypto v0.10.0 h1:LKqV2xt9+kDzSTfOhx4FrkEBcMrAgHSYgzywV9zcGmM=
 golang.org/x/crypto v0.10.0/go.mod h1:o4eNf7Ede1fv+hwOwZsTHl9EsPFO6q6ZvYR8vYfY45I=
+golang.org/x/crypto v0.16.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
+golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
+golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
 golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.9.0 h1:KS/R3tvhPqvJvwcKfnBHJwwthS11LRhmM5D59eEXa0s=
 golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.9.0 h1:GRRCnKYhdQrD8kfRAdQ6Zcw1P0OcELxGLKJvtjVMZ28=
 golang.org/x/term v0.9.0/go.mod h1:M6DEAAIenWoTxdKrOltXcmDY3rSplQUkrvaDU5FcQyo=
+golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
 golang.org/x/text v0.10.0 h1:UpjohKhiEgNc0CSauXmwYftY1+LlaC75SJwh0SgCX58=
 golang.org/x/text v0.10.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.28.2-0.20220831092852-f930b1dc76e8 h1:KR8+MyP7/qOlV+8Af01LtjL04bu7on42eVsxT4EyBQk=
diff --git a/options.go b/options.go
index b625bac..cc5ebab 100644
--- a/options.go
+++ b/options.go
@@ -28,6 +28,18 @@ func (ngin *Engine) ConnManager() *conn.ConnManager {
 
 //////////////////////// Options
 
+func WithSendSize(sendSize int) RunOption {
+	return func(ngin *Engine) {
+		ngin.SendChannelSize = sendSize
+	}
+}
+
+func WithWriteSize(size int) RunOption {
+	return func(ngin *Engine) {
+		ngin.WriteChannelSize = size
+	}
+}
+
 func WithMiddleware(middleware ...rt.Middleware) RunOption {
 	return func(ngin *Engine) {
 		ngin.Use(middleware...)