diff --git a/apiserver/eurekaserver/server.go b/apiserver/eurekaserver/server.go
index b30433522..27c0fac7f 100644
--- a/apiserver/eurekaserver/server.go
+++ b/apiserver/eurekaserver/server.go
@@ -305,7 +305,7 @@ func (h *EurekaServer) Run(errCh chan error) {
 	} else {
 		err = server.ServeTLS(ln, h.tlsInfo.CertFile, h.tlsInfo.KeyFile)
 	}
-	if err != nil {
+	if err != nil && err != http.ErrServerClosed {
 		log.Errorf("%+v", err)
 		if !h.restart {
 			log.Infof("not in restart progress, broadcast error")
diff --git a/bootstrap/server.go b/bootstrap/server.go
index 3fbbb0a3a..ea2d1f674 100644
--- a/bootstrap/server.go
+++ b/bootstrap/server.go
@@ -581,6 +581,8 @@ func SelfDeregister() {
 			log.Errorf("Deregister instance error: %s", resp.GetInfo().GetValue())
 		}
 	}
+	// wait the async event handler to finish
+	time.Sleep(5 * time.Second)
 }
 
 // getLocalHost 获取本地IP地址
diff --git a/cache/client.go b/cache/client.go
index 8d5f2c18d..a2ae16c1b 100644
--- a/cache/client.go
+++ b/cache/client.go
@@ -304,9 +304,7 @@ func doClientPage(ret []*model.Client, offset, limit uint32) []*model.Client {
 		endIndex = totalCount
 	}
 
-	for i := range ret {
-		clients = append(clients, ret[i])
-	}
+	clients = append(clients, ret...)
 
 	sort.Slice(clients, func(i, j int) bool {
 		return clients[i].ModifyTime().After(clients[j].ModifyTime())
diff --git a/common/model/naming.go b/common/model/naming.go
index 7a8346459..eb6e03974 100644
--- a/common/model/naming.go
+++ b/common/model/naming.go
@@ -530,6 +530,15 @@ func (i *InstanceEvent) InjectMetadata(ctx context.Context) {
 	i.MetaData = value.(map[string]string)
 }
 
+func (i *InstanceEvent) String() string {
+	if nil == i {
+		return "nil"
+	}
+	hostPortStr := fmt.Sprintf("%s:%d", i.Instance.GetHost().GetValue(), i.Instance.GetPort().GetValue())
+	return fmt.Sprintf("InstanceEvent(id=%s, namespace=%s, service=%s, type=%v, instance=%s, healthy=%v)",
+		i.Id, i.Namespace, i.Service, i.EType, hostPortStr, i.Instance.GetHealthy().GetValue())
+}
+
 // InstanceCount Service instance statistics
 type InstanceCount struct {
 	// HealthyInstanceCount 健康实例数
diff --git a/service/instance.go b/service/instance.go
index c88045016..f708986d2 100644
--- a/service/instance.go
+++ b/service/instance.go
@@ -114,11 +114,12 @@ func (s *Server) CreateInstance(ctx context.Context, req *api.Instance) *api.Res
 		Name:      req.GetService().GetValue(),
 		Namespace: req.GetNamespace().GetValue(),
 	}
+	instanceProto := data.Proto
 	event := &model.InstanceEvent{
 		Id:         instanceID,
 		Namespace:  svc.Namespace,
 		Service:    svc.Name,
-		Instance:   &ins,
+		Instance:   instanceProto,
 		EType:      model.EventInstanceOnline,
 		CreateTime: time.Time{},
 	}
@@ -127,11 +128,11 @@ func (s *Server) CreateInstance(ctx context.Context, req *api.Instance) *api.Res
 	s.RecordHistory(instanceRecordEntry(ctx, svc, data, model.OCreate))
 	out := &api.Instance{
 		Id:        ins.GetId(),
-		Service:   req.GetService(),
-		Namespace: req.GetNamespace(),
-		VpcId:     req.GetVpcId(),
-		Host:      req.GetHost(),
-		Port:      req.GetPort(),
+		Service:   &wrappers.StringValue{Value: svc.Name},
+		Namespace: &wrappers.StringValue{Value: svc.Namespace},
+		VpcId:     instanceProto.GetVpcId(),
+		Host:      instanceProto.GetHost(),
+		Port:      instanceProto.GetPort(),
 	}
 	return api.NewInstanceResponse(api.ExecuteSuccess, out)
 }