diff --git a/cmd/auth/main.go b/cmd/auth/main.go
index 9553d12..0b7237e 100644
--- a/cmd/auth/main.go
+++ b/cmd/auth/main.go
@@ -5,7 +5,6 @@ import (
 	"sonet/internal/auth/data"
 	"sonet/internal/auth/logic"
 	"sonet/pkg/config"
-	"sonet/pkg/grpc/discovery"
 	"sonet/pkg/utils/shutdown"
 )
 
@@ -23,14 +22,11 @@ func main() {
 		panic(err)
 	}
 
-	registry := discovery.NewRegister(etcdClient)
-	shutdown.AddShutdownHook(registry.Stop)
-
 	// user dao
 	userDao := data.NewUserDao(config.NewGorm(conf.Gorm))
 	authServer := logic.NewAuthServer(appConf.AesTokenKey, userDao)
 	go func() {
-		err = authServer.Run(conf.Grpc, registry)
+		err = authServer.Run(conf.Grpc, etcdClient)
 		if err != nil {
 			panic(err)
 		}
diff --git a/cmd/chat/main.go b/cmd/chat/main.go
index b3a0739..a303aa3 100644
--- a/cmd/chat/main.go
+++ b/cmd/chat/main.go
@@ -3,10 +3,10 @@ package main
 import (
 	"context"
 	clientv3 "go.etcd.io/etcd/client/v3"
+	"go.etcd.io/etcd/client/v3/naming/resolver"
 	"sonet/api/gen/chat"
 	"sonet/internal/chat/logic"
 	"sonet/pkg/config"
-	"sonet/pkg/grpc/discovery"
 	"sonet/pkg/protocol/deliver"
 	"sonet/pkg/utils/shutdown"
 )
@@ -20,17 +20,17 @@ func main() {
 		panic(err)
 	}
 
-	registry := discovery.NewRegister(etcdClient)
-	shutdown.AddShutdownHook(registry.Stop)
-
-	etcdResolver := discovery.NewResolver(etcdClient)
+	etcdResolver, err := resolver.NewBuilder(etcdClient)
+	if err != nil {
+		panic(err)
+	}
 	deli := deliver.NewDeliver(chat.Chat_ServiceDesc.ServiceName)
 	if err := deli.InitWithResolver(context.Background(), etcdResolver); err != nil {
 		panic(err)
 	}
 	chatServer := logic.NewChatServer(deli)
 	go func() {
-		err = chatServer.Run(conf.Grpc, registry)
+		err = chatServer.Run(conf.Grpc, etcdClient)
 		if err != nil {
 			panic(err)
 		}
diff --git a/cmd/gateway_http/main.go b/cmd/gateway_http/main.go
index 8262688..b5025d5 100644
--- a/cmd/gateway_http/main.go
+++ b/cmd/gateway_http/main.go
@@ -5,15 +5,14 @@ import (
 	"fmt"
 	"github.com/gin-gonic/gin"
 	clientv3 "go.etcd.io/etcd/client/v3"
+	"go.etcd.io/etcd/client/v3/naming/resolver"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
-	"google.golang.org/grpc/resolver"
 	"net/http"
 	"runtime/debug"
 	config2 "sonet/internal/gateway_http/config"
 	"sonet/internal/gateway_http/logic"
 	"sonet/pkg/config"
-	"sonet/pkg/grpc/discovery"
 	"sonet/pkg/grpc/generic"
 	"sonet/pkg/utils/logger"
 	"sonet/pkg/utils/resp"
@@ -35,9 +34,9 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	etcdResolver := discovery.NewResolver(etcdClient)
-	shutdown.AddShutdownHook(etcdResolver.Close)
-	resolver.Register(etcdResolver)
+	//etcdResolver := discovery.NewResolver(etcdClient)
+	//shutdown.AddShutdownHook(etcdResolver.Close)
+	//resolver.Register(etcdResolver)
 
 	// gin http server
 	authFilter, err := config2.NewAuthFilter(appConf.AesTokenKey, appConf.IgnoreUrls)
@@ -61,18 +60,25 @@ func main() {
 	})
 	server.Use(authFilter.Filter)
 
-	// postal loadBalancer handler
-	postalBalancer := logic.NewPostalBalancer()
-	postalBalancer.Init(context.Background())
-	server.GET("/api/lb/ws", postalBalancer.Endpoint)
-
 	// grpc services
 	grpcGroup := server.Group("/api/svc")
-	grpcFactory := generic.NewGpcGenericClientFactory(etcdResolver, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	etcdResolver, err := resolver.NewBuilder(etcdClient)
+	if err != nil {
+		panic(err)
+	}
+	grpcFactory := generic.NewGpcGenericClientFactory("etcd",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithResolvers(etcdResolver),
+	)
 	grpcFactory.Init()
 	grpcGenericHandler := logic.NewGrpcGenericHandler(grpcFactory)
 	grpcGenericHandler.Route(grpcGroup)
 
+	// postal loadBalancer handler
+	postalBalancer := logic.NewPostalBalancer()
+	postalBalancer.Init(context.Background(), etcdResolver)
+	server.GET("/api/lb/ws", postalBalancer.Endpoint)
+
 	go func() {
 		err := server.Run(fmt.Sprintf(":%d", appConf.Port))
 		if err != nil {
diff --git a/cmd/gateway_ws/main.go b/cmd/gateway_ws/main.go
index 8f60400..71437f7 100644
--- a/cmd/gateway_ws/main.go
+++ b/cmd/gateway_ws/main.go
@@ -4,9 +4,9 @@ import (
 	"github.com/nats-io/nats.go"
 	"github.com/redis/go-redis/v9"
 	clientv3 "go.etcd.io/etcd/client/v3"
+	"go.etcd.io/etcd/client/v3/naming/resolver"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
-	"google.golang.org/grpc/resolver"
 	"sonet/internal/gateway_ws/server"
 	"sonet/internal/postal/logic"
 	"sonet/pkg/config"
@@ -16,6 +16,7 @@ import (
 	"sonet/pkg/plugins/cache"
 	"sonet/pkg/plugins/mq"
 	"sonet/pkg/utils/conver"
+	"sonet/pkg/utils/logger"
 	"sonet/pkg/utils/shutdown"
 	"sync"
 )
@@ -44,12 +45,15 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	clientFactory := client.NewGrpcDirectClientFactory(grpc.WithTransportCredentials(insecure.NewCredentials()))
-
-	etcdResolver := discovery.NewResolver(etcdClient)
-	resolver.Register(etcdResolver)
 
-	grpcFactory := generic.NewGpcGenericClientFactory(etcdResolver, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	etcdResolver, err := resolver.NewBuilder(etcdClient)
+	if err != nil {
+		panic(err)
+	}
+	grpcFactory := generic.NewGpcGenericClientFactory("etcd",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithResolvers(etcdResolver),
+	)
 	grpcFactory.Init()
 
 	postalAddr := discovery.MustRegisterAddress(conf.Grpc.Address)
@@ -63,11 +67,15 @@ func main() {
 	}()
 
 	// run postal server
-	registry := discovery.NewRegister(etcdClient)
-	shutdown.AddShutdownHook(registry.Stop)
+	shutdown.AddShutdownHook(func() {
+		if err := etcdClient.Close(); err != nil {
+			logger.Error("etcd close error: ", err)
+		}
+	})
+	clientFactory := client.NewGrpcDirectClientFactory(grpc.WithTransportCredentials(insecure.NewCredentials()))
 	postalServer := logic.NewPostalServer(appConf.EndpointAddress, sessionStore, subjectStore, clientFactory)
 	go func() {
-		err = postalServer.Run(conf.Grpc, registry)
+		err = postalServer.Run(conf.Grpc, etcdClient)
 		if err != nil {
 			panic(err)
 		}
diff --git a/cmd/mahjong/main.go b/cmd/mahjong/main.go
index 0f2ccb0..1dae610 100644
--- a/cmd/mahjong/main.go
+++ b/cmd/mahjong/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	clientv3 "go.etcd.io/etcd/client/v3"
+	"go.etcd.io/etcd/client/v3/naming/resolver"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 	"sonet/api/gen/auth"
@@ -28,7 +29,11 @@ func main() {
 	shutdown.AddShutdownHook(registry.Stop)
 
 	// init deliver
-	etcdResolver := discovery.NewResolver(etcdClient)
+	// etcdResolver := discovery.NewResolver(etcdClient)
+	etcdResolver, err := resolver.NewBuilder(etcdClient)
+	if err != nil {
+		panic(err)
+	}
 	deli := deliver.NewDeliver(mahjong.Mahjong_ServiceDesc.ServiceName)
 	if err := deli.InitWithResolver(context.Background(), etcdResolver); err != nil {
 		panic(err)
@@ -36,14 +41,17 @@ func main() {
 	mjStore := store.NewStore(deli)
 
 	// auth conn
-	url := discovery.BuildResolverUrl(auth.Auth_ServiceDesc.ServiceName)
-	authConn, err := grpc.DialContext(context.Background(), url, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	url := discovery.EtcdDialUrl(auth.Auth_ServiceDesc.ServiceName)
+	authConn, err := grpc.DialContext(context.Background(), url,
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithResolvers(etcdResolver),
+	)
 	if err != nil {
 		panic(err)
 	}
 	mahjongServer := logic.NewMahjongServer(mjStore, deli, auth.NewAuthClient(authConn))
 	go func() {
-		err = mahjongServer.Run(conf.Grpc, registry)
+		err = mahjongServer.Run(conf.Grpc, etcdClient)
 		if err != nil {
 			panic(err)
 		}
diff --git a/deploy_k8s/prometheus.yaml b/deploy_k8s/prometheus.yaml
new file mode 100644
index 0000000..828cdd0
--- /dev/null
+++ b/deploy_k8s/prometheus.yaml
@@ -0,0 +1,121 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: prometheus-map
+  namespace: sopod
+  labels:
+    app: prometheus-map
+data:
+  prometheus.yml: |-
+    global:
+      scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
+      evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
+      # scrape_timeout is set to the global default (10s).
+    
+    scrape_configs:
+      - job_name: "prometheus"
+        static_configs:
+          - targets: ["localhost:9090"]
+      # - job_name: "gateway-http-svc"
+      #   static_configs:
+      #     - targets: ["gateway-http-svc:9100"]
+      # - job_name: "svr-gateway-ws1-svc"
+      #   static_configs:
+      #     - targets: ["svr-gateway-ws1-svc:9100"]
+      # - job_name: "svr-gateway-ws2-svc"
+      #   static_configs:
+      #     - targets: ["svr-gateway-ws2-svc:9100"]
+
+---
+
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  namespace: sopod
+  name: prometheus-pv
+  labels:
+    pv: prometheus-pv
+spec:
+  capacity:
+    storage: 20Gi
+  accessModes:
+    - ReadWriteMany
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: local-storage
+  local:
+    path: /data/k8s_data/prometheus/data
+  nodeAffinity:
+    required:
+      nodeSelectorTerms:
+        - matchExpressions:
+            - key: node-role.kubernetes.io/master
+              operator: In
+              values:
+                - "true"
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: prometheus-pvc
+  namespace: sopod
+spec:
+  storageClassName: local-storage
+  accessModes:
+    - ReadWriteMany
+  resources:
+    requests:
+      storage: 20Gi
+  selector:
+    matchLabels:
+      pv: prometheus-pv
+
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: prometheus
+  namespace: sopod
+  labels:
+    app: prometheus
+spec:
+  containers:
+    - name: prometheus
+      securityContext:
+        runAsUser: 0 # open /opt/bitnami/prometheus/data/queries.active: permission denied
+      image: bitnami/prometheus:2.47.0
+      imagePullPolicy: IfNotPresent
+      args:
+        - "--config.file=/opt/bitnami/prometheus/conf/prometheus.yml"
+        - "--web.listen-address=:9090"
+        - "--storage.tsdb.path=/opt/bitnami/prometheus/data/"
+      ports:
+        - containerPort: 9090
+      volumeMounts:
+        - name: prometheus-data
+          mountPath: /opt/bitnami/prometheus/data/
+        - name: prometheus-map-vol
+          mountPath: /opt/bitnami/prometheus/conf/
+  volumes:
+    - name: prometheus-data
+      persistentVolumeClaim:
+        claimName: prometheus-pvc
+    - name: prometheus-map-vol
+      configMap:
+        name: prometheus-map
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  namespace: sopod
+  name: prometheus-svc
+  labels:
+    app: prometheus-svc
+spec:
+  type: NodePort
+  ports:
+    - name: prometheus
+      port: 9090
+      nodePort: 30090
+  selector:
+    app: prometheus
diff --git a/internal/auth/logic/auth_server.go b/internal/auth/logic/auth_server.go
index 54e2455..3d30d87 100644
--- a/internal/auth/logic/auth_server.go
+++ b/internal/auth/logic/auth_server.go
@@ -5,6 +5,7 @@ import (
 	"encoding/base64"
 	"errors"
 	"github.com/bytedance/sonic"
+	clientv3 "go.etcd.io/etcd/client/v3"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/reflection"
 	"net"
@@ -35,7 +36,7 @@ func NewAuthServer(aesTokenKey string, userDao *data.AuthUserDao) *AuthServer {
 	}
 }
 
-func (s *AuthServer) Run(conf config.GrpcConfig, register *discovery.Register) (err error) {
+func (s *AuthServer) Run(conf config.GrpcConfig, etcd *clientv3.Client) (err error) {
 	server := grpc.NewServer(
 		config.GetGrpcOptions(
 			conf,
@@ -53,22 +54,20 @@ func (s *AuthServer) Run(conf config.GrpcConfig, register *discovery.Register) (
 	}
 
 	// registry discovery
-	reg := conf.Register
-	if reg.Name == "" {
-		reg.Name = auth.Auth_ServiceDesc.ServiceName
+	register := &(conf.Register)
+	if register.Name == "" {
+		register.Name = auth.Auth_ServiceDesc.ServiceName
 	}
-	if reg.Addr == "" {
-		reg.Addr, err = discovery.RegisterAddress(conf.Address)
-		if err != nil {
-			return
-		}
+	if register.Addr == "" {
+		register.Addr = conf.Address
 	}
-	if err = register.Register(reg); err != nil {
-		return
+	err = discovery.EtcdRegistry(etcd, register)
+	if err != nil {
+		panic(err)
 	}
 
 	// run serve
-	logger.Infof("%s grpc server running %s\n", reg.Name, listen.Addr().String())
+	logger.Infof("%s grpc server running %s\n", register.Name, listen.Addr().String())
 	err = server.Serve(listen)
 	return
 }
diff --git a/internal/chat/logic/chat_server.go b/internal/chat/logic/chat_server.go
index 633a59c..6e23468 100644
--- a/internal/chat/logic/chat_server.go
+++ b/internal/chat/logic/chat_server.go
@@ -2,6 +2,7 @@ package logic
 
 import (
 	"context"
+	clientv3 "go.etcd.io/etcd/client/v3"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/reflection"
 	"google.golang.org/protobuf/types/known/emptypb"
@@ -26,7 +27,7 @@ func NewChatServer(deliver *deliver.Deliver) *ChatServer {
 	}
 }
 
-func (s *ChatServer) Run(conf config.GrpcConfig, register *discovery.Register) (err error) {
+func (s *ChatServer) Run(conf config.GrpcConfig, etcd *clientv3.Client) (err error) {
 	server := grpc.NewServer(
 		config.GetGrpcOptions(
 			conf,
@@ -44,22 +45,20 @@ func (s *ChatServer) Run(conf config.GrpcConfig, register *discovery.Register) (
 	}
 
 	// registry discovery
-	reg := conf.Register
-	if reg.Name == "" {
-		reg.Name = chat.Chat_ServiceDesc.ServiceName
+	register := &(conf.Register)
+	if register.Name == "" {
+		register.Name = chat.Chat_ServiceDesc.ServiceName
 	}
-	if reg.Addr == "" {
-		reg.Addr, err = discovery.RegisterAddress(conf.Address)
-		if err != nil {
-			return
-		}
+	if register.Addr == "" {
+		register.Addr = conf.Address
 	}
-	if err = register.Register(reg); err != nil {
-		return
+	err = discovery.EtcdRegistry(etcd, register)
+	if err != nil {
+		panic(err)
 	}
 
 	// run serve
-	logger.Infof("%s grpc server running %s\n", reg.Name, listen.Addr().String())
+	logger.Infof("%s grpc server running %s\n", register.Name, listen.Addr().String())
 	err = server.Serve(listen)
 	return
 }
diff --git a/internal/gateway_http/logic/postal_balancer.go b/internal/gateway_http/logic/postal_balancer.go
index 1b9cba8..760bc8d 100644
--- a/internal/gateway_http/logic/postal_balancer.go
+++ b/internal/gateway_http/logic/postal_balancer.go
@@ -6,6 +6,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/resolver"
 	"google.golang.org/protobuf/types/known/emptypb"
 	"net/http"
 	"sonet/api/gen/postal"
@@ -23,14 +24,15 @@ func NewPostalBalancer() *PostalBalancer {
 	return &PostalBalancer{}
 }
 
-func (h *PostalBalancer) Init(ctx context.Context) {
+func (h *PostalBalancer) Init(ctx context.Context, resolver resolver.Builder) {
 	balancer.InitConsistentHashBuilder()
 
-	postalUrl := discovery.BuildResolverUrl(postal.Postal_ServiceDesc.ServiceName)
+	postalUrl := discovery.EtcdDialUrl(postal.Postal_ServiceDesc.ServiceName)
 	conn, err := grpc.DialContext(ctx, postalUrl,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
 		// consistent hash lb
 		grpc.WithDefaultServiceConfig(fmt.Sprintf(`{"loadBalancingPolicy":"%s"}`, balancer.ConsistentHash)),
+		grpc.WithResolvers(resolver),
 	)
 	if err != nil {
 		return
diff --git a/internal/mahjong/logic/mahjong_server.go b/internal/mahjong/logic/mahjong_server.go
index 67859e8..15bf9b5 100644
--- a/internal/mahjong/logic/mahjong_server.go
+++ b/internal/mahjong/logic/mahjong_server.go
@@ -3,6 +3,7 @@ package logic
 import (
 	"context"
 	"errors"
+	clientv3 "go.etcd.io/etcd/client/v3"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/reflection"
 	"google.golang.org/protobuf/types/known/emptypb"
@@ -37,7 +38,7 @@ func NewMahjongServer(store *store.Store, deliver *deliver.Deliver, authClient a
 	}
 }
 
-func (mj *MahjongServer) Run(conf config.GrpcConfig, register *discovery.Register) (err error) {
+func (mj *MahjongServer) Run(conf config.GrpcConfig, etcd *clientv3.Client) (err error) {
 	server := grpc.NewServer(
 		config.GetGrpcOptions(
 			conf,
@@ -55,22 +56,20 @@ func (mj *MahjongServer) Run(conf config.GrpcConfig, register *discovery.Registe
 	}
 
 	// registry discovery
-	reg := conf.Register
-	if reg.Name == "" {
-		reg.Name = mahjong.Mahjong_ServiceDesc.ServiceName
+	register := &(conf.Register)
+	if register.Name == "" {
+		register.Name = mahjong.Mahjong_ServiceDesc.ServiceName
 	}
-	if reg.Addr == "" {
-		reg.Addr, err = discovery.RegisterAddress(conf.Address)
-		if err != nil {
-			return
-		}
+	if register.Addr == "" {
+		register.Addr = conf.Address
 	}
-	if err = register.Register(reg); err != nil {
-		return
+	err = discovery.EtcdRegistry(etcd, register)
+	if err != nil {
+		panic(err)
 	}
 
 	// run serve
-	logger.Infof("%s grpc server running %s\n", reg.Name, listen.Addr().String())
+	logger.Infof("%s grpc server running %s\n", register.Name, listen.Addr().String())
 	err = server.Serve(listen)
 	return
 }
diff --git a/internal/postal/logic/postal_server.go b/internal/postal/logic/postal_server.go
index 9982245..4d62253 100644
--- a/internal/postal/logic/postal_server.go
+++ b/internal/postal/logic/postal_server.go
@@ -2,6 +2,7 @@ package logic
 
 import (
 	"context"
+	clientv3 "go.etcd.io/etcd/client/v3"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/reflection"
 	"google.golang.org/protobuf/types/known/emptypb"
@@ -40,7 +41,7 @@ func NewPostalServer(
 	}
 }
 
-func (s *PostalServer) Run(conf config.GrpcConfig, postalRegister *discovery.Register) (err error) {
+func (s *PostalServer) Run(conf config.GrpcConfig, etcd *clientv3.Client) (err error) {
 	server := grpc.NewServer(
 		config.GetGrpcOptions(
 			conf,
@@ -58,24 +59,23 @@ func (s *PostalServer) Run(conf config.GrpcConfig, postalRegister *discovery.Reg
 	}
 
 	// registry discovery
-	reg := conf.Register
-	if reg.Name == "" {
-		reg.Name = postal.Postal_ServiceDesc.ServiceName
+	register := &(conf.Register)
+	if register.Name == "" {
+		register.Name = postal.Postal_ServiceDesc.ServiceName
 	}
-	if reg.Addr == "" {
-		reg.Addr, err = discovery.RegisterAddress(conf.Address)
-		if err != nil {
-			return
-		}
+	if register.Addr == "" {
+		register.Addr = conf.Address
 	}
-	if err = postalRegister.Register(reg); err != nil {
-		return
+	err = discovery.EtcdRegistry(etcd, register)
+	if err != nil {
+		panic(err)
 	}
+
 	// 其他服务直连地址
-	s.broadcastAddress = reg.Addr
+	s.broadcastAddress = register.Addr
 
 	// run serve
-	logger.Infof("%s grpc server running %s\n", reg.Name, listen.Addr().String())
+	logger.Infof("%s grpc server running %s\n", register.Name, listen.Addr().String())
 	err = server.Serve(listen)
 	return
 }
diff --git a/pkg/grpc/balancer/consistent_hash.go b/pkg/grpc/balancer/consistent_hash.go
index 478daf9..93eaf02 100644
--- a/pkg/grpc/balancer/consistent_hash.go
+++ b/pkg/grpc/balancer/consistent_hash.go
@@ -1,12 +1,14 @@
 package balancer
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/balancer/base"
 	"google.golang.org/grpc/grpclog"
 	"google.golang.org/grpc/resolver"
+	"sonet/pkg/utils/logger"
 	"strconv"
 )
 
@@ -76,11 +78,28 @@ func wrapAddr(addr string, idx int) string {
 
 func GetWeight(addr resolver.Address) (weight int) {
 	weight = DefaultWeight
-	if addr.Attributes == nil {
+	var val any = nil
+
+	// from metadata...
+	if marshal, ok := addr.Metadata.(string); ok {
+		m := make(map[string]any)
+		err := json.Unmarshal([]byte(marshal), &m)
+		if err != nil {
+			logger.Error("unmarshal metadata error: ", err)
+		} else {
+			val = m[WeightKey]
+		}
+	}
+
+	// from attributes...
+	if addr.Attributes != nil {
+		val = addr.Attributes.Value(WeightKey)
+	}
+
+	if val == nil {
 		return
 	}
 
-	val := addr.Attributes.Value(WeightKey)
 	switch val.(type) {
 	case int:
 		weight = val.(int)
@@ -91,8 +110,8 @@ func GetWeight(addr resolver.Address) (weight int) {
 			return
 		}
 		weight = w
-	default:
-		grpclog.Errorf("instance weight value type not string: %v\n", val)
+		//default:
+		//	grpclog.Errorf("instance weight value type not string: %v\n", val)
 	}
 	return
 }
diff --git a/pkg/grpc/discovery/etcd.go b/pkg/grpc/discovery/etcd.go
deleted file mode 100644
index ae33e26..0000000
--- a/pkg/grpc/discovery/etcd.go
+++ /dev/null
@@ -1,33 +0,0 @@
-package discovery
-
-import (
-	"context"
-	"fmt"
-	clientv3 "go.etcd.io/etcd/client/v3"
-	"go.etcd.io/etcd/client/v3/naming/endpoints"
-)
-
-func EtcdDialUrl(serviceName string) string {
-	return fmt.Sprintf("etcd:///%s", serviceName)
-}
-
-func EtcdRegistry(client *clientv3.Client, serviceName, addr string, attrs map[string]string) (err error) {
-	em, err := endpoints.NewManager(client, "Hello")
-	if err != nil {
-		return
-	}
-	ip, port, err := RegisterIpPort(addr)
-	if err != nil {
-		return
-	}
-	fmt.Println()
-
-	err = em.AddEndpoint(context.Background(),
-		fmt.Sprintf("%s/%s", serviceName, ip),
-		endpoints.Endpoint{
-			Addr:     fmt.Sprintf("%s:%d", ip, port),
-			Metadata: attrs,
-		},
-	)
-	return
-}
diff --git a/pkg/grpc/discovery/etcd_registry.go b/pkg/grpc/discovery/etcd_registry.go
new file mode 100644
index 0000000..71b779f
--- /dev/null
+++ b/pkg/grpc/discovery/etcd_registry.go
@@ -0,0 +1,80 @@
+package discovery
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	clientv3 "go.etcd.io/etcd/client/v3"
+	"go.etcd.io/etcd/client/v3/naming/endpoints"
+	"sonet/pkg/utils/logger"
+	"sonet/pkg/utils/shutdown"
+	"time"
+)
+
+func EtcdDialUrl(serviceName string) string {
+	return fmt.Sprintf("etcd:///%s", serviceName)
+}
+
+func EtcdRegistry(client *clientv3.Client, server *Server) (err error) {
+	em, err := endpoints.NewManager(client, server.Name)
+	if err != nil {
+		return
+	}
+	ip, port, err := RegisterIpPort(server.Addr)
+	if err != nil {
+		return
+	}
+
+	server.Addr = fmt.Sprintf("%s:%d", ip, port)
+	// 序列化 metadata 信息
+	meta := "{}"
+	if server.Attrs != nil {
+		bytes, e := json.Marshal(server.Attrs)
+		if e != nil {
+			err = e
+			return
+		}
+		meta = string(bytes)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
+	defer cancel()
+
+	lease, err := client.Grant(ctx, DefaultRegisterTTL) // 使用租约注册端点确保如果主机无法维持保活心跳, 从服务中删除
+	if err != nil {
+		return
+	}
+	endpointKey := fmt.Sprintf("%s/%s", server.Name, ip)
+	err = em.AddEndpoint(ctx,
+		endpointKey,
+		endpoints.Endpoint{
+			Addr:     server.Addr,
+			Metadata: meta,
+		},
+		clientv3.WithLease(lease.ID),
+	)
+
+	// keepalive lease
+	keepAliveCh, err := client.KeepAlive(context.Background(), lease.ID)
+	doneCh := make(chan bool)
+	c := func() {
+		doneCh <- true
+		<-doneCh
+	}
+	shutdown.AddShutdownHook(c)
+	go func() {
+		for {
+			select {
+			case <-doneCh: // async... not done
+				logger.Info("keepalive done")
+				ctx, c := context.WithTimeout(context.Background(), time.Second*5)
+				_, _ = client.Revoke(ctx, lease.ID)
+				c()
+				doneCh <- true
+				return
+			case _ = <-keepAliveCh:
+			}
+		}
+	}()
+	return
+}
diff --git a/pkg/grpc/generic/generic_client_factory.go b/pkg/grpc/generic/generic_client_factory.go
index 85f8f53..d6974a2 100644
--- a/pkg/grpc/generic/generic_client_factory.go
+++ b/pkg/grpc/generic/generic_client_factory.go
@@ -4,31 +4,28 @@ import (
 	"context"
 	"fmt"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/resolver"
-	"sonet/pkg/grpc/discovery"
 	"sync"
 )
 
 type GrpcGenericClientFactory struct {
-	resolver    *discovery.Resolver
+	scheme      string
 	defaultOpts []grpc.DialOption
 	clientCache *sync.Map
 }
 
-func NewGpcGenericClientFactory(resolver *discovery.Resolver, defaultOpts ...grpc.DialOption) *GrpcGenericClientFactory {
+func NewGpcGenericClientFactory(scheme string, defaultOpts ...grpc.DialOption) *GrpcGenericClientFactory {
 	return &GrpcGenericClientFactory{
-		resolver:    resolver,
+		scheme:      scheme,
 		defaultOpts: defaultOpts,
 	}
 }
 
 func (f *GrpcGenericClientFactory) Init() {
-	resolver.Register(f.resolver)
 	f.clientCache = &sync.Map{}
 }
 
 func (f *GrpcGenericClientFactory) NewClient(ctx context.Context, serviceName string, opts ...grpc.DialOption) (client *GrpcGenericClient, err error) {
-	addr := fmt.Sprintf("%s:///%s", f.resolver.Scheme(), serviceName)
+	addr := fmt.Sprintf("%s:///%s", f.scheme, serviceName)
 	dialOpts := make([]grpc.DialOption, 0, len(f.defaultOpts)+len(opts))
 	dialOpts = append(dialOpts, f.defaultOpts...)
 	dialOpts = append(dialOpts, opts...)
diff --git a/pkg/protocol/deliver/deliver.go b/pkg/protocol/deliver/deliver.go
index 8888d05..667ff50 100644
--- a/pkg/protocol/deliver/deliver.go
+++ b/pkg/protocol/deliver/deliver.go
@@ -35,15 +35,15 @@ func NewDeliver(msgInServiceName string) *Deliver {
 	}
 }
 
-func (d *Deliver) InitWithResolver(ctx context.Context, postalResolver *discovery.Resolver) (err error) {
-	resolver.Register(postalResolver)
+func (d *Deliver) InitWithResolver(ctx context.Context, builder resolver.Builder) (err error) {
 	balancer.InitConsistentHashBuilder()
 
-	postalUrl := discovery.BuildResolverUrl(postal.Postal_ServiceDesc.ServiceName)
+	postalUrl := discovery.EtcdDialUrl(postal.Postal_ServiceDesc.ServiceName)
 	conn, err := grpc.DialContext(ctx, postalUrl,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
 		// consistent hash lb
 		grpc.WithDefaultServiceConfig(fmt.Sprintf(`{"loadBalancingPolicy":"%s"}`, balancer.ConsistentHash)),
+		grpc.WithResolvers(builder),
 	)
 	if err != nil {
 		return