diff --git a/cluster/cluster.go b/cluster/cluster.go
index 51364707..5767f4df 100644
--- a/cluster/cluster.go
+++ b/cluster/cluster.go
@@ -24,8 +24,10 @@ import (
 	"context"
 	"fmt"
 	"sync"
+	"time"
 
 	"github.com/lonng/nano/cluster/clusterpb"
+	"github.com/lonng/nano/internal/env"
 	"github.com/lonng/nano/internal/log"
 )
 
@@ -42,7 +44,11 @@ type cluster struct {
 }
 
 func newCluster(currentNode *Node) *cluster {
-	return &cluster{currentNode: currentNode}
+	c := &cluster{currentNode: currentNode}
+	if currentNode.IsMaster {
+		c.checkMemberHeartbeat()
+	}
+	return c
 }
 
 // Register implements the MasterServer gRPC service
@@ -50,7 +56,6 @@ func (c *cluster) Register(_ context.Context, req *clusterpb.RegisterRequest) (*
 	if req.MemberInfo == nil {
 		return nil, ErrInvalidRegisterReq
 	}
-
 	resp := &clusterpb.RegisterResponse{}
 	c.mu.Lock()
 	for k, m := range c.members {
@@ -90,12 +95,12 @@ func (c *cluster) Register(_ context.Context, req *clusterpb.RegisterRequest) (*
 	// Register services to current node
 	c.currentNode.handler.addRemoteService(req.MemberInfo)
 	c.mu.Lock()
-	c.members = append(c.members, &Member{isMaster: false, memberInfo: req.MemberInfo})
+	c.members = append(c.members, &Member{isMaster: false, memberInfo: req.MemberInfo, lastHeartbeatAt: time.Now()})
 	c.mu.Unlock()
 	return resp, nil
 }
 
-// Register implements the MasterServer gRPC service
+// Unregister implements the MasterServer gRPC service
 func (c *cluster) Unregister(_ context.Context, req *clusterpb.UnregisterRequest) (*clusterpb.UnregisterResponse, error) {
 	if req.ServiceAddr == "" {
 		return nil, ErrInvalidRegisterReq
@@ -110,12 +115,17 @@ func (c *cluster) Unregister(_ context.Context, req *clusterpb.UnregisterRequest
 		}
 	}
 	if index < 0 {
-		return nil, fmt.Errorf("address %s has  notregistered", req.ServiceAddr)
+		return nil, fmt.Errorf("address %s has not registered", req.ServiceAddr)
 	}
 
 	// Notify registered node to update remote services
 	delMember := &clusterpb.DelMemberRequest{ServiceAddr: req.ServiceAddr}
-	for _, m := range c.members {
+	for i, m := range c.members {
+		if i == index {
+			// this node is down.
+			continue
+		}
+
 		if m.MemberInfo().ServiceAddr == c.currentNode.ServiceAddr {
 			continue
 		}
@@ -132,6 +142,10 @@ func (c *cluster) Unregister(_ context.Context, req *clusterpb.UnregisterRequest
 
 	log.Println("Exists peer unregister to cluster", req.ServiceAddr)
 
+	if c.currentNode.UnregisterCallback != nil {
+		c.currentNode.UnregisterCallback(*c.members[index])
+	}
+
 	// Register services to current node
 	c.currentNode.handler.delMember(req.ServiceAddr)
 	c.mu.Lock()
@@ -141,9 +155,69 @@ func (c *cluster) Unregister(_ context.Context, req *clusterpb.UnregisterRequest
 		c.members = append(c.members[:index], c.members[index+1:]...)
 	}
 	c.mu.Unlock()
+
 	return resp, nil
 }
 
+func (c *cluster) Heartbeat(_ context.Context, req *clusterpb.HeartbeatRequest) (*clusterpb.HeartbeatResponse, error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	isHit := false
+	for i, m := range c.members {
+		if m.MemberInfo().GetServiceAddr() == req.GetMemberInfo().GetServiceAddr() {
+			c.members[i].lastHeartbeatAt = time.Now()
+			isHit = true
+		}
+	}
+	if !isHit {
+		// master local not binding this node, other members do not need to be notified, because this node registered.
+		// maybe the master process reload
+		m := &Member{
+			isMaster:        false,
+			memberInfo:      req.GetMemberInfo(),
+			lastHeartbeatAt: time.Now(),
+		}
+		c.members = append(c.members, m)
+		c.currentNode.handler.addRemoteService(req.MemberInfo)
+		log.Println("Heartbeat peer register to cluster", req.MemberInfo.ServiceAddr)
+	}
+	return &clusterpb.HeartbeatResponse{}, nil
+}
+
+func (c *cluster) checkMemberHeartbeat() {
+	check := func() {
+		unregisterMembers := make([]*Member, 0)
+		// check heartbeat time
+		for _, m := range c.members {
+			if time.Now().Sub(m.lastHeartbeatAt) > 4*env.Heartbeat && !m.isMaster {
+				unregisterMembers = append(unregisterMembers, m)
+			}
+		}
+
+		for _, m := range unregisterMembers {
+			if _, err := c.Unregister(context.Background(), &clusterpb.UnregisterRequest{
+				ServiceAddr: m.MemberInfo().ServiceAddr,
+			}); err != nil {
+				log.Println("Heartbeat unregister error", err)
+			}
+		}
+	}
+	go func() {
+		ticker := time.NewTicker(env.Heartbeat)
+		for {
+			select {
+			case <-ticker.C:
+				if !c.currentNode.IsMaster {
+					ticker.Stop()
+					return
+				}
+				check()
+			}
+		}
+	}()
+}
+
 func (c *cluster) setRpcClient(client *rpcClient) {
 	c.rpcClient = client
 }
diff --git a/cluster/clusterpb/cluster.pb.go b/cluster/clusterpb/cluster.pb.go
index 766676df..71f1023e 100644
--- a/cluster/clusterpb/cluster.pb.go
+++ b/cluster/clusterpb/cluster.pb.go
@@ -262,6 +262,91 @@ func (*UnregisterResponse) Descriptor() ([]byte, []int) {
 	return file_cluster_proto_rawDescGZIP(), []int{4}
 }
 
+type HeartbeatRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	MemberInfo *MemberInfo `protobuf:"bytes,1,opt,name=memberInfo,proto3" json:"memberInfo,omitempty"`
+}
+
+func (x *HeartbeatRequest) Reset() {
+	*x = HeartbeatRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_cluster_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *HeartbeatRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*HeartbeatRequest) ProtoMessage() {}
+
+func (x *HeartbeatRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_cluster_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HeartbeatRequest.ProtoReflect.Descriptor instead.
+func (*HeartbeatRequest) Descriptor() ([]byte, []int) {
+	return file_cluster_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *HeartbeatRequest) GetMemberInfo() *MemberInfo {
+	if x != nil {
+		return x.MemberInfo
+	}
+	return nil
+}
+
+type HeartbeatResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *HeartbeatResponse) Reset() {
+	*x = HeartbeatResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_cluster_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *HeartbeatResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*HeartbeatResponse) ProtoMessage() {}
+
+func (x *HeartbeatResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_cluster_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HeartbeatResponse.ProtoReflect.Descriptor instead.
+func (*HeartbeatResponse) Descriptor() ([]byte, []int) {
+	return file_cluster_proto_rawDescGZIP(), []int{6}
+}
+
 type RequestMessage struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -277,7 +362,7 @@ type RequestMessage struct {
 func (x *RequestMessage) Reset() {
 	*x = RequestMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[5]
+		mi := &file_cluster_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -290,7 +375,7 @@ func (x *RequestMessage) String() string {
 func (*RequestMessage) ProtoMessage() {}
 
 func (x *RequestMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[5]
+	mi := &file_cluster_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -303,7 +388,7 @@ func (x *RequestMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RequestMessage.ProtoReflect.Descriptor instead.
 func (*RequestMessage) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{5}
+	return file_cluster_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *RequestMessage) GetGateAddr() string {
@@ -355,7 +440,7 @@ type NotifyMessage struct {
 func (x *NotifyMessage) Reset() {
 	*x = NotifyMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[6]
+		mi := &file_cluster_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -368,7 +453,7 @@ func (x *NotifyMessage) String() string {
 func (*NotifyMessage) ProtoMessage() {}
 
 func (x *NotifyMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[6]
+	mi := &file_cluster_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -381,7 +466,7 @@ func (x *NotifyMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use NotifyMessage.ProtoReflect.Descriptor instead.
 func (*NotifyMessage) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{6}
+	return file_cluster_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *NotifyMessage) GetGateAddr() string {
@@ -425,7 +510,7 @@ type ResponseMessage struct {
 func (x *ResponseMessage) Reset() {
 	*x = ResponseMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[7]
+		mi := &file_cluster_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -438,7 +523,7 @@ func (x *ResponseMessage) String() string {
 func (*ResponseMessage) ProtoMessage() {}
 
 func (x *ResponseMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[7]
+	mi := &file_cluster_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -451,7 +536,7 @@ func (x *ResponseMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResponseMessage.ProtoReflect.Descriptor instead.
 func (*ResponseMessage) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{7}
+	return file_cluster_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *ResponseMessage) GetSessionId() int64 {
@@ -488,7 +573,7 @@ type PushMessage struct {
 func (x *PushMessage) Reset() {
 	*x = PushMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[8]
+		mi := &file_cluster_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -501,7 +586,7 @@ func (x *PushMessage) String() string {
 func (*PushMessage) ProtoMessage() {}
 
 func (x *PushMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[8]
+	mi := &file_cluster_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -514,7 +599,7 @@ func (x *PushMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PushMessage.ProtoReflect.Descriptor instead.
 func (*PushMessage) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{8}
+	return file_cluster_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *PushMessage) GetSessionId() int64 {
@@ -547,7 +632,7 @@ type MemberHandleResponse struct {
 func (x *MemberHandleResponse) Reset() {
 	*x = MemberHandleResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[9]
+		mi := &file_cluster_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -560,7 +645,7 @@ func (x *MemberHandleResponse) String() string {
 func (*MemberHandleResponse) ProtoMessage() {}
 
 func (x *MemberHandleResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[9]
+	mi := &file_cluster_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -573,7 +658,7 @@ func (x *MemberHandleResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MemberHandleResponse.ProtoReflect.Descriptor instead.
 func (*MemberHandleResponse) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{9}
+	return file_cluster_proto_rawDescGZIP(), []int{11}
 }
 
 type NewMemberRequest struct {
@@ -587,7 +672,7 @@ type NewMemberRequest struct {
 func (x *NewMemberRequest) Reset() {
 	*x = NewMemberRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[10]
+		mi := &file_cluster_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -600,7 +685,7 @@ func (x *NewMemberRequest) String() string {
 func (*NewMemberRequest) ProtoMessage() {}
 
 func (x *NewMemberRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[10]
+	mi := &file_cluster_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -613,7 +698,7 @@ func (x *NewMemberRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use NewMemberRequest.ProtoReflect.Descriptor instead.
 func (*NewMemberRequest) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{10}
+	return file_cluster_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *NewMemberRequest) GetMemberInfo() *MemberInfo {
@@ -632,7 +717,7 @@ type NewMemberResponse struct {
 func (x *NewMemberResponse) Reset() {
 	*x = NewMemberResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[11]
+		mi := &file_cluster_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -645,7 +730,7 @@ func (x *NewMemberResponse) String() string {
 func (*NewMemberResponse) ProtoMessage() {}
 
 func (x *NewMemberResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[11]
+	mi := &file_cluster_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -658,7 +743,7 @@ func (x *NewMemberResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use NewMemberResponse.ProtoReflect.Descriptor instead.
 func (*NewMemberResponse) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{11}
+	return file_cluster_proto_rawDescGZIP(), []int{13}
 }
 
 type DelMemberRequest struct {
@@ -672,7 +757,7 @@ type DelMemberRequest struct {
 func (x *DelMemberRequest) Reset() {
 	*x = DelMemberRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[12]
+		mi := &file_cluster_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -685,7 +770,7 @@ func (x *DelMemberRequest) String() string {
 func (*DelMemberRequest) ProtoMessage() {}
 
 func (x *DelMemberRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[12]
+	mi := &file_cluster_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -698,7 +783,7 @@ func (x *DelMemberRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DelMemberRequest.ProtoReflect.Descriptor instead.
 func (*DelMemberRequest) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{12}
+	return file_cluster_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *DelMemberRequest) GetServiceAddr() string {
@@ -717,7 +802,7 @@ type DelMemberResponse struct {
 func (x *DelMemberResponse) Reset() {
 	*x = DelMemberResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[13]
+		mi := &file_cluster_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -730,7 +815,7 @@ func (x *DelMemberResponse) String() string {
 func (*DelMemberResponse) ProtoMessage() {}
 
 func (x *DelMemberResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[13]
+	mi := &file_cluster_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -743,7 +828,7 @@ func (x *DelMemberResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DelMemberResponse.ProtoReflect.Descriptor instead.
 func (*DelMemberResponse) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{13}
+	return file_cluster_proto_rawDescGZIP(), []int{15}
 }
 
 type SessionClosedRequest struct {
@@ -757,7 +842,7 @@ type SessionClosedRequest struct {
 func (x *SessionClosedRequest) Reset() {
 	*x = SessionClosedRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[14]
+		mi := &file_cluster_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -770,7 +855,7 @@ func (x *SessionClosedRequest) String() string {
 func (*SessionClosedRequest) ProtoMessage() {}
 
 func (x *SessionClosedRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[14]
+	mi := &file_cluster_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -783,7 +868,7 @@ func (x *SessionClosedRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SessionClosedRequest.ProtoReflect.Descriptor instead.
 func (*SessionClosedRequest) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{14}
+	return file_cluster_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *SessionClosedRequest) GetSessionId() int64 {
@@ -802,7 +887,7 @@ type SessionClosedResponse struct {
 func (x *SessionClosedResponse) Reset() {
 	*x = SessionClosedResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[15]
+		mi := &file_cluster_proto_msgTypes[17]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -815,7 +900,7 @@ func (x *SessionClosedResponse) String() string {
 func (*SessionClosedResponse) ProtoMessage() {}
 
 func (x *SessionClosedResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[15]
+	mi := &file_cluster_proto_msgTypes[17]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -828,7 +913,7 @@ func (x *SessionClosedResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SessionClosedResponse.ProtoReflect.Descriptor instead.
 func (*SessionClosedResponse) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{15}
+	return file_cluster_proto_rawDescGZIP(), []int{17}
 }
 
 type CloseSessionRequest struct {
@@ -842,7 +927,7 @@ type CloseSessionRequest struct {
 func (x *CloseSessionRequest) Reset() {
 	*x = CloseSessionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[16]
+		mi := &file_cluster_proto_msgTypes[18]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -855,7 +940,7 @@ func (x *CloseSessionRequest) String() string {
 func (*CloseSessionRequest) ProtoMessage() {}
 
 func (x *CloseSessionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[16]
+	mi := &file_cluster_proto_msgTypes[18]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -868,7 +953,7 @@ func (x *CloseSessionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CloseSessionRequest.ProtoReflect.Descriptor instead.
 func (*CloseSessionRequest) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{16}
+	return file_cluster_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *CloseSessionRequest) GetSessionId() int64 {
@@ -887,7 +972,7 @@ type CloseSessionResponse struct {
 func (x *CloseSessionResponse) Reset() {
 	*x = CloseSessionResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_cluster_proto_msgTypes[17]
+		mi := &file_cluster_proto_msgTypes[19]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -900,7 +985,7 @@ func (x *CloseSessionResponse) String() string {
 func (*CloseSessionResponse) ProtoMessage() {}
 
 func (x *CloseSessionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_cluster_proto_msgTypes[17]
+	mi := &file_cluster_proto_msgTypes[19]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -913,7 +998,7 @@ func (x *CloseSessionResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CloseSessionResponse.ProtoReflect.Descriptor instead.
 func (*CloseSessionResponse) Descriptor() ([]byte, []int) {
-	return file_cluster_proto_rawDescGZIP(), []int{17}
+	return file_cluster_proto_rawDescGZIP(), []int{19}
 }
 
 var File_cluster_proto protoreflect.FileDescriptor
@@ -940,6 +1025,12 @@ var file_cluster_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1055,56 +1150,61 @@ func file_cluster_proto_rawDescGZIP() []byte {
 	return file_cluster_proto_rawDescData
 }
 
-var file_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 20)
 var file_cluster_proto_goTypes = []interface{}{
 	(*MemberInfo)(nil),            // 0: clusterpb.MemberInfo
 	(*RegisterRequest)(nil),       // 1: clusterpb.RegisterRequest
 	(*RegisterResponse)(nil),      // 2: clusterpb.RegisterResponse
 	(*UnregisterRequest)(nil),     // 3: clusterpb.UnregisterRequest
 	(*UnregisterResponse)(nil),    // 4: clusterpb.UnregisterResponse
-	(*RequestMessage)(nil),        // 5: clusterpb.RequestMessage
-	(*NotifyMessage)(nil),         // 6: clusterpb.NotifyMessage
-	(*ResponseMessage)(nil),       // 7: clusterpb.ResponseMessage
-	(*PushMessage)(nil),           // 8: clusterpb.PushMessage
-	(*MemberHandleResponse)(nil),  // 9: clusterpb.MemberHandleResponse
-	(*NewMemberRequest)(nil),      // 10: clusterpb.NewMemberRequest
-	(*NewMemberResponse)(nil),     // 11: clusterpb.NewMemberResponse
-	(*DelMemberRequest)(nil),      // 12: clusterpb.DelMemberRequest
-	(*DelMemberResponse)(nil),     // 13: clusterpb.DelMemberResponse
-	(*SessionClosedRequest)(nil),  // 14: clusterpb.SessionClosedRequest
-	(*SessionClosedResponse)(nil), // 15: clusterpb.SessionClosedResponse
-	(*CloseSessionRequest)(nil),   // 16: clusterpb.CloseSessionRequest
-	(*CloseSessionResponse)(nil),  // 17: clusterpb.CloseSessionResponse
+	(*HeartbeatRequest)(nil),      // 5: clusterpb.HeartbeatRequest
+	(*HeartbeatResponse)(nil),     // 6: clusterpb.HeartbeatResponse
+	(*RequestMessage)(nil),        // 7: clusterpb.RequestMessage
+	(*NotifyMessage)(nil),         // 8: clusterpb.NotifyMessage
+	(*ResponseMessage)(nil),       // 9: clusterpb.ResponseMessage
+	(*PushMessage)(nil),           // 10: clusterpb.PushMessage
+	(*MemberHandleResponse)(nil),  // 11: clusterpb.MemberHandleResponse
+	(*NewMemberRequest)(nil),      // 12: clusterpb.NewMemberRequest
+	(*NewMemberResponse)(nil),     // 13: clusterpb.NewMemberResponse
+	(*DelMemberRequest)(nil),      // 14: clusterpb.DelMemberRequest
+	(*DelMemberResponse)(nil),     // 15: clusterpb.DelMemberResponse
+	(*SessionClosedRequest)(nil),  // 16: clusterpb.SessionClosedRequest
+	(*SessionClosedResponse)(nil), // 17: clusterpb.SessionClosedResponse
+	(*CloseSessionRequest)(nil),   // 18: clusterpb.CloseSessionRequest
+	(*CloseSessionResponse)(nil),  // 19: clusterpb.CloseSessionResponse
 }
 var file_cluster_proto_depIdxs = []int32{
 	0,  // 0: clusterpb.RegisterRequest.memberInfo:type_name -> clusterpb.MemberInfo
 	0,  // 1: clusterpb.RegisterResponse.members:type_name -> clusterpb.MemberInfo
-	0,  // 2: clusterpb.NewMemberRequest.memberInfo:type_name -> clusterpb.MemberInfo
-	1,  // 3: clusterpb.Master.Register:input_type -> clusterpb.RegisterRequest
-	3,  // 4: clusterpb.Master.Unregister:input_type -> clusterpb.UnregisterRequest
-	5,  // 5: clusterpb.Member.HandleRequest:input_type -> clusterpb.RequestMessage
-	6,  // 6: clusterpb.Member.HandleNotify:input_type -> clusterpb.NotifyMessage
-	8,  // 7: clusterpb.Member.HandlePush:input_type -> clusterpb.PushMessage
-	7,  // 8: clusterpb.Member.HandleResponse:input_type -> clusterpb.ResponseMessage
-	10, // 9: clusterpb.Member.NewMember:input_type -> clusterpb.NewMemberRequest
-	12, // 10: clusterpb.Member.DelMember:input_type -> clusterpb.DelMemberRequest
-	14, // 11: clusterpb.Member.SessionClosed:input_type -> clusterpb.SessionClosedRequest
-	16, // 12: clusterpb.Member.CloseSession:input_type -> clusterpb.CloseSessionRequest
-	2,  // 13: clusterpb.Master.Register:output_type -> clusterpb.RegisterResponse
-	4,  // 14: clusterpb.Master.Unregister:output_type -> clusterpb.UnregisterResponse
-	9,  // 15: clusterpb.Member.HandleRequest:output_type -> clusterpb.MemberHandleResponse
-	9,  // 16: clusterpb.Member.HandleNotify:output_type -> clusterpb.MemberHandleResponse
-	9,  // 17: clusterpb.Member.HandlePush:output_type -> clusterpb.MemberHandleResponse
-	9,  // 18: clusterpb.Member.HandleResponse:output_type -> clusterpb.MemberHandleResponse
-	11, // 19: clusterpb.Member.NewMember:output_type -> clusterpb.NewMemberResponse
-	13, // 20: clusterpb.Member.DelMember:output_type -> clusterpb.DelMemberResponse
-	15, // 21: clusterpb.Member.SessionClosed:output_type -> clusterpb.SessionClosedResponse
-	17, // 22: clusterpb.Member.CloseSession:output_type -> clusterpb.CloseSessionResponse
-	13, // [13:23] is the sub-list for method output_type
-	3,  // [3:13] is the sub-list for method input_type
-	3,  // [3:3] is the sub-list for extension type_name
-	3,  // [3:3] is the sub-list for extension extendee
-	0,  // [0:3] is the sub-list for field type_name
+	0,  // 2: clusterpb.HeartbeatRequest.memberInfo:type_name -> clusterpb.MemberInfo
+	0,  // 3: clusterpb.NewMemberRequest.memberInfo:type_name -> clusterpb.MemberInfo
+	1,  // 4: clusterpb.Master.Register:input_type -> clusterpb.RegisterRequest
+	3,  // 5: clusterpb.Master.Unregister:input_type -> clusterpb.UnregisterRequest
+	5,  // 6: clusterpb.Master.Heartbeat:input_type -> clusterpb.HeartbeatRequest
+	7,  // 7: clusterpb.Member.HandleRequest:input_type -> clusterpb.RequestMessage
+	8,  // 8: clusterpb.Member.HandleNotify:input_type -> clusterpb.NotifyMessage
+	10, // 9: clusterpb.Member.HandlePush:input_type -> clusterpb.PushMessage
+	9,  // 10: clusterpb.Member.HandleResponse:input_type -> clusterpb.ResponseMessage
+	12, // 11: clusterpb.Member.NewMember:input_type -> clusterpb.NewMemberRequest
+	14, // 12: clusterpb.Member.DelMember:input_type -> clusterpb.DelMemberRequest
+	16, // 13: clusterpb.Member.SessionClosed:input_type -> clusterpb.SessionClosedRequest
+	18, // 14: clusterpb.Member.CloseSession:input_type -> clusterpb.CloseSessionRequest
+	2,  // 15: clusterpb.Master.Register:output_type -> clusterpb.RegisterResponse
+	4,  // 16: clusterpb.Master.Unregister:output_type -> clusterpb.UnregisterResponse
+	6,  // 17: clusterpb.Master.Heartbeat:output_type -> clusterpb.HeartbeatResponse
+	11, // 18: clusterpb.Member.HandleRequest:output_type -> clusterpb.MemberHandleResponse
+	11, // 19: clusterpb.Member.HandleNotify:output_type -> clusterpb.MemberHandleResponse
+	11, // 20: clusterpb.Member.HandlePush:output_type -> clusterpb.MemberHandleResponse
+	11, // 21: clusterpb.Member.HandleResponse:output_type -> clusterpb.MemberHandleResponse
+	13, // 22: clusterpb.Member.NewMember:output_type -> clusterpb.NewMemberResponse
+	15, // 23: clusterpb.Member.DelMember:output_type -> clusterpb.DelMemberResponse
+	17, // 24: clusterpb.Member.SessionClosed:output_type -> clusterpb.SessionClosedResponse
+	19, // 25: clusterpb.Member.CloseSession:output_type -> clusterpb.CloseSessionResponse
+	15, // [15:26] is the sub-list for method output_type
+	4,  // [4:15] is the sub-list for method input_type
+	4,  // [4:4] is the sub-list for extension type_name
+	4,  // [4:4] is the sub-list for extension extendee
+	0,  // [0:4] is the sub-list for field type_name
 }
 
 func init() { file_cluster_proto_init() }
@@ -1174,7 +1274,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RequestMessage); i {
+			switch v := v.(*HeartbeatRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1186,7 +1286,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NotifyMessage); i {
+			switch v := v.(*HeartbeatResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1198,7 +1298,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ResponseMessage); i {
+			switch v := v.(*RequestMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1210,7 +1310,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PushMessage); i {
+			switch v := v.(*NotifyMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1222,7 +1322,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MemberHandleResponse); i {
+			switch v := v.(*ResponseMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1234,7 +1334,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NewMemberRequest); i {
+			switch v := v.(*PushMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1246,7 +1346,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NewMemberResponse); i {
+			switch v := v.(*MemberHandleResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1258,7 +1358,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DelMemberRequest); i {
+			switch v := v.(*NewMemberRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1270,7 +1370,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DelMemberResponse); i {
+			switch v := v.(*NewMemberResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1282,7 +1382,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SessionClosedRequest); i {
+			switch v := v.(*DelMemberRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1294,7 +1394,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SessionClosedResponse); i {
+			switch v := v.(*DelMemberResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1306,7 +1406,7 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseSessionRequest); i {
+			switch v := v.(*SessionClosedRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1318,6 +1418,30 @@ func file_cluster_proto_init() {
 			}
 		}
 		file_cluster_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SessionClosedResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_cluster_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CloseSessionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_cluster_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*CloseSessionResponse); i {
 			case 0:
 				return &v.state
@@ -1336,7 +1460,7 @@ func file_cluster_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_cluster_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   18,
+			NumMessages:   20,
 			NumExtensions: 0,
 			NumServices:   2,
 		},
diff --git a/cluster/clusterpb/cluster_grpc.pb.go b/cluster/clusterpb/cluster_grpc.pb.go
index 155ca2c6..58fe57eb 100644
--- a/cluster/clusterpb/cluster_grpc.pb.go
+++ b/cluster/clusterpb/cluster_grpc.pb.go
@@ -1,4 +1,8 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.1.0
+// - protoc             v3.13.0
+// source: cluster.proto
 
 package clusterpb
 
@@ -20,6 +24,7 @@ const _ = grpc.SupportPackageIsVersion7
 type MasterClient interface {
 	Register(ctx context.Context, in *RegisterRequest, opts ...grpc.CallOption) (*RegisterResponse, error)
 	Unregister(ctx context.Context, in *UnregisterRequest, opts ...grpc.CallOption) (*UnregisterResponse, error)
+	Heartbeat(ctx context.Context, in *HeartbeatRequest, opts ...grpc.CallOption) (*HeartbeatResponse, error)
 }
 
 type masterClient struct {
@@ -48,12 +53,22 @@ func (c *masterClient) Unregister(ctx context.Context, in *UnregisterRequest, op
 	return out, nil
 }
 
+func (c *masterClient) Heartbeat(ctx context.Context, in *HeartbeatRequest, opts ...grpc.CallOption) (*HeartbeatResponse, error) {
+	out := new(HeartbeatResponse)
+	err := c.cc.Invoke(ctx, "/clusterpb.Master/Heartbeat", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MasterServer is the server API for Master service.
 // All implementations should embed UnimplementedMasterServer
 // for forward compatibility
 type MasterServer interface {
 	Register(context.Context, *RegisterRequest) (*RegisterResponse, error)
 	Unregister(context.Context, *UnregisterRequest) (*UnregisterResponse, error)
+	Heartbeat(context.Context, *HeartbeatRequest) (*HeartbeatResponse, error)
 }
 
 // UnimplementedMasterServer should be embedded to have forward compatible implementations.
@@ -66,6 +81,9 @@ func (UnimplementedMasterServer) Register(context.Context, *RegisterRequest) (*R
 func (UnimplementedMasterServer) Unregister(context.Context, *UnregisterRequest) (*UnregisterResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Unregister not implemented")
 }
+func (UnimplementedMasterServer) Heartbeat(context.Context, *HeartbeatRequest) (*HeartbeatResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Heartbeat not implemented")
+}
 
 // UnsafeMasterServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to MasterServer will
@@ -114,6 +132,24 @@ func _Master_Unregister_Handler(srv interface{}, ctx context.Context, dec func(i
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Master_Heartbeat_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HeartbeatRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MasterServer).Heartbeat(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/clusterpb.Master/Heartbeat",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MasterServer).Heartbeat(ctx, req.(*HeartbeatRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // Master_ServiceDesc is the grpc.ServiceDesc for Master service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -129,6 +165,10 @@ var Master_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Unregister",
 			Handler:    _Master_Unregister_Handler,
 		},
+		{
+			MethodName: "Heartbeat",
+			Handler:    _Master_Heartbeat_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cluster.proto",
diff --git a/cluster/clusterpb/proto/cluster.proto b/cluster/clusterpb/proto/cluster.proto
index 6c5504d2..e6223b61 100644
--- a/cluster/clusterpb/proto/cluster.proto
+++ b/cluster/clusterpb/proto/cluster.proto
@@ -22,9 +22,17 @@ message UnregisterRequest {
 
 message UnregisterResponse {}
 
+message HeartbeatRequest {
+    MemberInfo memberInfo = 1;
+}
+
+message HeartbeatResponse {
+}
+
 service Master {
     rpc Register (RegisterRequest) returns (RegisterResponse) {}
     rpc Unregister (UnregisterRequest) returns (UnregisterResponse) {}
+    rpc Heartbeat (HeartbeatRequest) returns (HeartbeatResponse) {}
 }
 
 message RequestMessage {
diff --git a/cluster/member.go b/cluster/member.go
index 0064c55e..bf342682 100644
--- a/cluster/member.go
+++ b/cluster/member.go
@@ -20,13 +20,23 @@
 
 package cluster
 
-import "github.com/lonng/nano/cluster/clusterpb"
+import (
+	"fmt"
+	"time"
+
+	"github.com/lonng/nano/cluster/clusterpb"
+)
 
 type Member struct {
-	isMaster   bool
-	memberInfo *clusterpb.MemberInfo
+	isMaster        bool
+	memberInfo      *clusterpb.MemberInfo
+	lastHeartbeatAt time.Time // cluster member report heartbeat time to the master
 }
 
 func (m *Member) MemberInfo() *clusterpb.MemberInfo {
 	return m.memberInfo
 }
+
+func (m *Member) String() string {
+	return fmt.Sprintf("Master: %t MemberInfo: %s LastHeartbeatAt: %s", m.isMaster, m.memberInfo.String(), m.lastHeartbeatAt.String())
+}
diff --git a/cluster/node.go b/cluster/node.go
index 6a7b797a..d8508d93 100644
--- a/cluster/node.go
+++ b/cluster/node.go
@@ -44,16 +44,17 @@ import (
 
 // Options contains some configurations for current node
 type Options struct {
-	Pipeline       pipeline.Pipeline
-	IsMaster       bool
-	AdvertiseAddr  string
-	RetryInterval  time.Duration
-	ClientAddr     string
-	Components     *component.Components
-	Label          string
-	IsWebsocket    bool
-	TSLCertificate string
-	TSLKey         string
+	Pipeline           pipeline.Pipeline
+	IsMaster           bool
+	AdvertiseAddr      string
+	RetryInterval      time.Duration
+	ClientAddr         string
+	Components         *component.Components
+	Label              string
+	IsWebsocket        bool
+	TSLCertificate     string
+	TSLKey             string
+	UnregisterCallback func(Member)
 }
 
 // Node represents a node in nano cluster, which will contains a group of services.
@@ -70,6 +71,9 @@ type Node struct {
 
 	mu       sync.RWMutex
 	sessions map[int64]*session.Session
+
+	once          sync.Once
+	keepaliveExit chan struct{}
 }
 
 func (n *Node) Startup() error {
@@ -180,9 +184,8 @@ func (n *Node) initNode() error {
 			log.Println("Register current node to cluster failed", err, "and will retry in", n.RetryInterval.String())
 			time.Sleep(n.RetryInterval)
 		}
-
+		n.once.Do(n.keepalive)
 	}
-
 	return nil
 }
 
@@ -200,7 +203,10 @@ func (n *Node) Shutdown() {
 	for i := length - 1; i >= 0; i-- {
 		components[i].Comp.Shutdown()
 	}
-
+	// close sendHeartbeat
+	if n.keepaliveExit != nil {
+		close(n.keepaliveExit)
+	}
 	if !n.IsMaster && n.AdvertiseAddr != "" {
 		pool, err := n.rpcClient.getConnPool(n.AdvertiseAddr)
 		if err != nil {
@@ -384,6 +390,7 @@ func (n *Node) NewMember(_ context.Context, req *clusterpb.NewMemberRequest) (*c
 }
 
 func (n *Node) DelMember(_ context.Context, req *clusterpb.DelMemberRequest) (*clusterpb.DelMemberResponse, error) {
+	log.Println("DelMember member", req.String())
 	n.handler.delMember(req.ServiceAddr)
 	n.cluster.delMember(req.ServiceAddr)
 	return &clusterpb.DelMemberResponse{}, nil
@@ -412,3 +419,43 @@ func (n *Node) CloseSession(_ context.Context, req *clusterpb.CloseSessionReques
 	}
 	return &clusterpb.CloseSessionResponse{}, nil
 }
+
+// ticker send heartbeat register info to master
+func (n *Node) keepalive() {
+	if n.keepaliveExit == nil {
+		n.keepaliveExit = make(chan struct{})
+	}
+	if n.AdvertiseAddr == "" || n.IsMaster {
+		return
+	}
+	heartbeat := func() {
+		pool, err := n.rpcClient.getConnPool(n.AdvertiseAddr)
+		if err != nil {
+			log.Println("rpcClient master conn", err)
+			return
+		}
+		masterCli := clusterpb.NewMasterClient(pool.Get())
+		if _, err := masterCli.Heartbeat(context.Background(), &clusterpb.HeartbeatRequest{
+			MemberInfo: &clusterpb.MemberInfo{
+				Label:       n.Label,
+				ServiceAddr: n.ServiceAddr,
+				Services:    n.handler.LocalService(),
+			},
+		}); err != nil {
+			log.Println("Member send heartbeat error", err)
+		}
+	}
+	go func() {
+		ticker := time.NewTicker(env.Heartbeat)
+		for {
+			select {
+			case <-ticker.C:
+				heartbeat()
+			case <-n.keepaliveExit:
+				log.Println("Exit member node heartbeat ")
+				ticker.Stop()
+				return
+			}
+		}
+	}()
+}
diff --git a/examples/cluster/main.go b/examples/cluster/main.go
index c2e31c0c..e4a4250f 100644
--- a/examples/cluster/main.go
+++ b/examples/cluster/main.go
@@ -8,6 +8,7 @@ import (
 	"runtime"
 
 	"github.com/lonng/nano"
+	"github.com/lonng/nano/cluster"
 	"github.com/lonng/nano/examples/cluster/chat"
 	"github.com/lonng/nano/examples/cluster/gate"
 	"github.com/lonng/nano/examples/cluster/master"
@@ -111,6 +112,9 @@ func runMaster(args *cli.Context) error {
 		nano.WithComponents(master.Services),
 		nano.WithSerializer(json.NewSerializer()),
 		nano.WithDebugMode(),
+		nano.WithUnregisterCallback(func(m cluster.Member) {
+			log.Println("Todo alarm unregister:", m.String())
+		}),
 	)
 
 	return nil
diff --git a/options.go b/options.go
index 8f656213..533817af 100644
--- a/options.go
+++ b/options.go
@@ -160,3 +160,10 @@ func WithNodeId(nodeId uint64) Option {
 		service.ResetNodeId(nodeId)
 	}
 }
+
+// WithUnregisterCallback master unregister member event call fn
+func WithUnregisterCallback(fn func(member cluster.Member)) Option {
+	return func(opt *cluster.Options) {
+		opt.UnregisterCallback = fn
+	}
+}