merge master
diff --git a/golang/general/grpc/go-client/app/helloworld.pb.go b/golang/general/grpc/go-client/app/helloworld.pb.go
index 61361f5..75e18b9 100644
--- a/golang/general/grpc/go-client/app/helloworld.pb.go
+++ b/golang/general/grpc/go-client/app/helloworld.pb.go
@@ -254,7 +254,7 @@
 	args = append(args, in)
 	invo := invocation.NewRPCInvocation("SayHello", args, nil)
 	if interceptor == nil {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	info := &grpc.UnaryServerInfo{
@@ -262,7 +262,7 @@
 		FullMethod: "/main.Greeter/SayHello",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	return interceptor(ctx, in, info, handler)
diff --git a/golang/general/grpc/go-server/app/helloworld.pb.go b/golang/general/grpc/go-server/app/helloworld.pb.go
index 61361f5..75e18b9 100644
--- a/golang/general/grpc/go-server/app/helloworld.pb.go
+++ b/golang/general/grpc/go-server/app/helloworld.pb.go
@@ -254,7 +254,7 @@
 	args = append(args, in)
 	invo := invocation.NewRPCInvocation("SayHello", args, nil)
 	if interceptor == nil {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	info := &grpc.UnaryServerInfo{
@@ -262,7 +262,7 @@
 		FullMethod: "/main.Greeter/SayHello",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	return interceptor(ctx, in, info, handler)
diff --git a/golang/go.mod b/golang/go.mod
index 8afeeff..91c9b25 100644
--- a/golang/go.mod
+++ b/golang/go.mod
@@ -1,8 +1,8 @@
 module github.com/apache/dubbo-samples/golang
 
 require (
-	github.com/apache/dubbo-go v1.4.1
-	github.com/apache/dubbo-go-hessian2 v1.6.1-0.20200623062814-707fde850279
+	github.com/apache/dubbo-go v1.5.1-0.20200809055513-4dfc8aac0561
+	github.com/apache/dubbo-go-hessian2 v1.6.1
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
 	github.com/emicklei/go-restful/v3 v3.0.0
 	github.com/golang/protobuf v1.3.2
@@ -12,7 +12,7 @@
 	github.com/pkg/errors v0.9.1
 	github.com/uber/jaeger-client-go v2.22.1+incompatible
 	github.com/uber/jaeger-lib v2.2.0+incompatible // indirect
-	google.golang.org/grpc v1.22.1
+	google.golang.org/grpc v1.23.0
 )
 
 go 1.13
diff --git a/golang/go.sum b/golang/go.sum
index e2da39b..e4ddf9f 100644
--- a/golang/go.sum
+++ b/golang/go.sum
@@ -1,25 +1,43 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/Azure/azure-sdk-for-go v16.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
-github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-github.com/Azure/go-autorest v10.7.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
-github.com/Azure/go-autorest v10.15.3+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.39.0/go.mod h1:rVLT6fkc8chs9sfPtFc1SBH6em7n+ZoXaG+87tDISts=
+github.com/Azure/azure-sdk-for-go v40.3.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
+github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
+github.com/Azure/go-autorest/autorest v0.9.3/go.mod h1:GsRuLYvwzLjjjRoWEIyMUaYq8GNUx2nRB378IPt/1p0=
+github.com/Azure/go-autorest/autorest v0.10.0/go.mod h1:/FALq9T/kS7b5J5qsQ+RSTUdAmGFqi0vUdVNNx8q630=
+github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
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+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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-github.com/Jeffail/gabs v1.1.0/go.mod h1:6xMvQMK4k33lb7GUUpaAPh6nKMmemQeg5d4gn7/bOXc=
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+github.com/Microsoft/go-winio v0.4.13/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
 github.com/NYTimes/gziphandler v1.0.1/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
-github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
+github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/SAP/go-hdb v0.12.0/go.mod h1:etBT+FAi1t5k3K3tf5vQTnosgYmhDkRi8jEnQqCnxF0=
-github.com/SermoDigital/jose v0.0.0-20180104203859-803625baeddc/go.mod h1:ARgCUhI1MHQH+ONky/PAtmVHQrP5JlGY0F3poXOp/fA=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/Workiva/go-datastructures v1.0.50 h1:slDmfW6KCHcC7U+LP3DDBbm4fqTwZGn1beOFPfGaLvo=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
-github.com/Workiva/go-datastructures v1.0.52/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
 github.com/abdullin/seq v0.0.0-20160510034733-d5467c17e7af/go.mod h1:5Jv4cbFiHJMsVxt52+i0Ha45fjshj6wxYr1r19tB9bw=
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5 h1:rFw4nCn9iMW+Vajsk51NtYIcwSTkXr+JGrMd36kTDJw=
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
@@ -27,54 +45,53 @@
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190802083043-4cd0c391755e h1:MSuLXx/mveDbpDNhVrcWTMeV4lbYWKcyO4rH+jAxmX0=
-github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190802083043-4cd0c391755e/go.mod h1:myCDvQSzCW+wB1WAlocEru4wMGJxy+vlxHdhegi1CDQ=
 github.com/aliyun/alibaba-cloud-sdk-go v1.61.18 h1:zOVTBdCKFd9JbCKz9/nt+FovbjPFmb7mUnp8nH9fQBA=
 github.com/aliyun/alibaba-cloud-sdk-go v1.61.18/go.mod h1:v8ESoHo4SyHmuB4b1tJqDHxfTGEciD+yhvOU/5s1Rfk=
-github.com/aliyun/aliyun-oss-go-sdk v0.0.0-20190307165228-86c17b95fcd5/go.mod h1:T/Aws4fEfogEE9v+HPhhw+CntffsBHJ8nXQCwKr0/g8=
-github.com/apache/dubbo-go v1.4.1 h1:YjPPpoaM1hMnRtB45CCyd4PxGtP5DsGHQPYOytiaICA=
-github.com/apache/dubbo-go v1.4.1/go.mod h1:hzP9PQkcYFcBUgedttDeimugDNqbmGzh18QQy/vBjnw=
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@@ -144,21 +163,25 @@
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@@ -166,7 +189,6 @@
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@@ -445,16 +546,19 @@
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@@ -463,6 +567,7 @@
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@@ -470,37 +575,56 @@
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@@ -555,35 +725,43 @@
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diff --git a/golang/multi_registry/zone/dubbo/go-client/app/client.go b/golang/multi_registry/zone/dubbo/go-client/app/client.go
new file mode 100755
index 0000000..bad335c
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-client/app/client.go
@@ -0,0 +1,114 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+	"github.com/apache/dubbo-go/common/constant"
+	"github.com/apache/dubbo-go/common/logger"
+	_ "github.com/apache/dubbo-go/common/proxy/proxy_factory"
+	"github.com/apache/dubbo-go/config"
+	_ "github.com/apache/dubbo-go/protocol/dubbo"
+	_ "github.com/apache/dubbo-go/registry/protocol"
+
+	_ "github.com/apache/dubbo-go/filter/filter_impl"
+
+	_ "github.com/apache/dubbo-go/cluster/cluster_impl"
+	_ "github.com/apache/dubbo-go/cluster/loadbalance"
+	_ "github.com/apache/dubbo-go/registry/zookeeper"
+)
+
+var (
+	//survivalTimeout int = 10e9
+	survivalTimeout int = 60 * 1000
+)
+
+func println(format string, args ...interface{}) {
+	fmt.Printf("\033[32;40m"+format+"\033[0m\n", args...)
+}
+
+// they are necessary:
+// 		export CONF_CONSUMER_FILE_PATH="xxx"
+// 		export APP_LOG_CONF_FILE="xxx"
+func main() {
+	hessian.RegisterPOJO(&User{})
+	config.Load()
+	time.Sleep(3e9)
+
+	println("\n\n\nstart to test dubbo")
+
+	// context zone hangzhou,
+	ctx := context.Background()
+	// if set zoneForce, must have zone tag
+	ctx = context.WithValue(ctx, constant.REGISTRY_KEY+"."+constant.ZONE_FORCE_KEY, true)
+
+	var hz, sh int
+	loop := 50
+	user := &User{}
+	for i := 0; i < loop; i++ {
+		err := userProvider.GetUser(ctx, []interface{}{i}, user)
+		if err != nil {
+			panic(err)
+		}
+		if "dev-hz" == user.Id {
+			hz++
+		}
+		if "dev-sh" == user.Id {
+			sh++
+		}
+		println("response %d result: %v\n", i, user)
+	}
+
+	println("loop count : %d, hangzhou count : %d, shanghai count : %d", loop,
+		hz, sh)
+
+	initSignal()
+}
+
+func initSignal() {
+	signals := make(chan os.Signal, 1)
+	// It is not possible to block SIGKILL or syscall.SIGSTOP
+	signal.Notify(signals, os.Interrupt, os.Kill, syscall.SIGHUP,
+		syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	for {
+		sig := <-signals
+		logger.Infof("get signal %s", sig.String())
+		switch sig {
+		case syscall.SIGHUP:
+			// reload()
+		default:
+			time.AfterFunc(time.Duration(survivalTimeout), func() {
+				logger.Warnf("app exit now by force...")
+				os.Exit(1)
+			})
+
+			// The program exits normally or timeout forcibly exits.
+			fmt.Println("app exit now...")
+			return
+		}
+	}
+}
diff --git a/golang/multi_registry/zone/dubbo/go-client/app/user.go b/golang/multi_registry/zone/dubbo/go-client/app/user.go
new file mode 100755
index 0000000..ff4486f
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-client/app/user.go
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"context"
+	"time"
+)
+
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+	"github.com/apache/dubbo-go/config"
+)
+
+var userProvider = new(UserProvider)
+
+func init() {
+	config.SetConsumerService(userProvider)
+	hessian.RegisterPOJO(&User{})
+}
+
+type User struct {
+	Id   string
+	Name string
+	Age  int32
+	Time time.Time
+}
+
+type UserProvider struct {
+	GetUser func(ctx context.Context, req []interface{}, rsp *User) error
+}
+
+func (u *UserProvider) Reference() string {
+	return "UserProvider"
+}
+
+func (User) JavaClassName() string {
+	return "com.ikurento.user.User"
+}
diff --git a/golang/multi_registry/zone/dubbo/go-client/app/version.go b/golang/multi_registry/zone/dubbo/go-client/app/version.go
new file mode 100755
index 0000000..c613858
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-client/app/version.go
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+var (
+	Version = "2.6.0"
+)
diff --git a/golang/multi_registry/zone/dubbo/go-client/profiles/dev/client.yml b/golang/multi_registry/zone/dubbo/go-client/profiles/dev/client.yml
new file mode 100755
index 0000000..1389beb
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-client/profiles/dev/client.yml
@@ -0,0 +1,71 @@
+# dubbo client yaml configure file
+
+
+check: false
+# client
+request_timeout : "3s"
+# connect timeout
+connect_timeout : "3s"
+
+# application config
+application:
+  organization : "ikurento.com"
+  name  : "BDTService"
+  module : "dubbogo user-info client"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "dev"
+
+registries :
+  "demoZk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2182"
+    username: ""
+    password: ""
+    zone: shanghai
+    weight: 50
+
+  "demoZk1":
+    protocol: "zookeeper"
+    timeout: "3s"
+    address: "127.0.0.1:2183"
+    zone: hangzhou
+    weight: 200
+    # if you open 'preferred', there will always use this registry
+#    preferred: true
+
+references:
+  "UserProvider":
+    # 可以指定多个registry,使用逗号隔开;不指定默认向所有注册中心注册
+    registry: "demoZk,demoZk1"
+    protocol : "dubbo"
+    interface : "com.ikurento.user.UserProvider"
+    cluster: "failover"
+    methods :
+    - name: "GetUser"
+      retries: 3
+
+
+protocol_conf:
+  dubbo:
+    reconnect_interval: 0
+    connection_number: 1
+    heartbeat_period: "5s"
+    session_timeout: "180s"
+    pool_size: 64
+    pool_ttl: 600
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 1024000
+      session_name: "client"
diff --git a/golang/multi_registry/zone/dubbo/go-client/profiles/dev/log.yml b/golang/multi_registry/zone/dubbo/go-client/profiles/dev/log.yml
new file mode 100755
index 0000000..352c2e4
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-client/profiles/dev/log.yml
@@ -0,0 +1,29 @@
+
+#level: "debug"
+level: "info"
+development: true
+disableCaller: false
+disableStacktrace: false
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/golang/multi_registry/zone/dubbo/go-server/app/server.go b/golang/multi_registry/zone/dubbo/go-server/app/server.go
new file mode 100755
index 0000000..fd81aab
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-server/app/server.go
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+	"github.com/apache/dubbo-go/common/logger"
+	"github.com/apache/dubbo-go/config"
+	_ "github.com/apache/dubbo-go/protocol/dubbo"
+	_ "github.com/apache/dubbo-go/registry/protocol"
+
+	_ "github.com/apache/dubbo-go/common/proxy/proxy_factory"
+	_ "github.com/apache/dubbo-go/filter/filter_impl"
+
+	_ "github.com/apache/dubbo-go/cluster/cluster_impl"
+	_ "github.com/apache/dubbo-go/cluster/loadbalance"
+	_ "github.com/apache/dubbo-go/registry/zookeeper"
+)
+
+var (
+	survivalTimeout = int(3e9)
+)
+
+// they are necessary:
+// 		export CONF_PROVIDER_FILE_PATH="xxx"
+// 		export APP_LOG_CONF_FILE="xxx"
+func main() {
+
+	hessian.RegisterPOJO(&User{})
+	config.Load()
+
+	initSignal()
+}
+
+func initSignal() {
+	signals := make(chan os.Signal, 1)
+	// It is not possible to block SIGKILL or syscall.SIGSTOP
+	signal.Notify(signals, os.Interrupt, os.Kill, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	for {
+		sig := <-signals
+		logger.Infof("get signal %s", sig.String())
+		switch sig {
+		case syscall.SIGHUP:
+			// reload()
+		default:
+			time.AfterFunc(time.Duration(survivalTimeout), func() {
+				logger.Warnf("app exit now by force...")
+				os.Exit(1)
+			})
+
+			// The program exits normally or timeout forcibly exits.
+			fmt.Println("provider app exit now...")
+			return
+		}
+	}
+}
diff --git a/golang/multi_registry/zone/dubbo/go-server/app/user.go b/golang/multi_registry/zone/dubbo/go-server/app/user.go
new file mode 100755
index 0000000..9ac7904
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-server/app/user.go
@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+import (
+	hessian "github.com/apache/dubbo-go-hessian2"
+	"github.com/apache/dubbo-go/config"
+)
+
+func init() {
+	config.SetProviderService(new(UserProvider))
+	// ------for hessian2------
+	hessian.RegisterPOJO(&User{})
+}
+
+type User struct {
+	Id   string
+	Name string
+	Age  int32
+	Time time.Time
+}
+
+type UserProvider struct {
+}
+
+func (u *UserProvider) GetUser(ctx context.Context, req []interface{}) (*User, error) {
+	println("req:%#v", req)
+	env := config.GetProviderConfig().ApplicationConfig.Environment
+	rsp := User{env, "Alex Stocks", 18, time.Now()}
+	println("rsp:%#v", rsp)
+	return &rsp, nil
+}
+
+func (u *UserProvider) Reference() string {
+	return "UserProvider"
+}
+
+func (u User) JavaClassName() string {
+	return "com.ikurento.user.User"
+}
+
+func println(format string, args ...interface{}) {
+	fmt.Printf("\033[32;40m"+format+"\033[0m\n", args...)
+}
diff --git a/golang/multi_registry/zone/dubbo/go-server/app/version.go b/golang/multi_registry/zone/dubbo/go-server/app/version.go
new file mode 100755
index 0000000..c613858
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-server/app/version.go
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+var (
+	Version = "2.6.0"
+)
diff --git a/golang/multi_registry/zone/dubbo/go-server/profiles/dev/log.yml b/golang/multi_registry/zone/dubbo/go-server/profiles/dev/log.yml
new file mode 100755
index 0000000..352c2e4
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-server/profiles/dev/log.yml
@@ -0,0 +1,29 @@
+
+#level: "debug"
+level: "info"
+development: true
+disableCaller: false
+disableStacktrace: false
+sampling:
+encoding: "console"
+
+# encoder
+encoderConfig:
+  messageKey: "message"
+  levelKey: "level"
+  timeKey: "time"
+  nameKey: "logger"
+  callerKey: "caller"
+  stacktraceKey: "stacktrace"
+  lineEnding: ""
+  levelEncoder: "capitalColor"
+  timeEncoder: "iso8601"
+  durationEncoder: "seconds"
+  callerEncoder: "short"
+  nameEncoder: ""
+
+outputPaths:
+  - "stderr"
+errorOutputPaths:
+  - "stderr"
+initialFields:
diff --git a/golang/multi_registry/zone/dubbo/go-server/profiles/dev/server_hz.yml b/golang/multi_registry/zone/dubbo/go-server/profiles/dev/server_hz.yml
new file mode 100755
index 0000000..9221d4e
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-server/profiles/dev/server_hz.yml
@@ -0,0 +1,58 @@
+# dubbo server yaml configure file
+
+
+# application config
+application:
+  organization : "ikurento.com"
+  name : "BDTService"
+  module : "dubbogo user-info server"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "dev-hz"
+
+registries :
+  "demoZk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2183"
+    zone: hangzhou
+
+services:
+  "UserProvider":
+    # 可以指定多个registry,使用逗号隔开;不指定默认向所有注册中心注册
+    registry: "demoZk"
+    protocol : "dubbo"
+    # 相当于dubbo.xml中的interface
+    interface : "com.ikurento.user.UserProvider"
+    loadbalance: "random"
+    warmup: "100"
+    cluster: "failover"
+    methods:
+    - name: "GetUser"
+      retries: 1
+      loadbalance: "random"
+
+protocols:
+  "dubbo":
+    name: "dubbo"
+    port: 20000
+
+
+protocol_conf:
+  dubbo:
+    session_number: 700
+    session_timeout: "180s"
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 1024000
+      session_name: "server"
diff --git a/golang/multi_registry/zone/dubbo/go-server/profiles/dev/server_sh.yml b/golang/multi_registry/zone/dubbo/go-server/profiles/dev/server_sh.yml
new file mode 100755
index 0000000..4d31dc5
--- /dev/null
+++ b/golang/multi_registry/zone/dubbo/go-server/profiles/dev/server_sh.yml
@@ -0,0 +1,58 @@
+# dubbo server yaml configure file
+
+
+# application config
+application:
+  organization : "ikurento.com"
+  name : "BDTService"
+  module : "dubbogo user-info server"
+  version : "0.0.1"
+  owner : "ZX"
+  environment : "dev-sh"
+
+registries :
+  "demoZk":
+    protocol: "zookeeper"
+    timeout	: "3s"
+    address: "127.0.0.1:2182"
+    zone: shanghai
+
+services:
+  "UserProvider":
+    # 可以指定多个registry,使用逗号隔开;不指定默认向所有注册中心注册
+    registry: "demoZk"
+    protocol : "dubbo"
+    # 相当于dubbo.xml中的interface
+    interface : "com.ikurento.user.UserProvider"
+    loadbalance: "random"
+    warmup: "100"
+    cluster: "failover"
+    methods:
+    - name: "GetUser"
+      retries: 1
+      loadbalance: "random"
+
+protocols:
+  "dubbo":
+    name: "dubbo"
+    port: 20001
+
+
+protocol_conf:
+  dubbo:
+    session_number: 700
+    session_timeout: "180s"
+    getty_session_param:
+      compress_encoding: false
+      tcp_no_delay: true
+      tcp_keep_alive: true
+      keep_alive_period: "120s"
+      tcp_r_buf_size: 262144
+      tcp_w_buf_size: 65536
+      pkg_rq_size: 1024
+      pkg_wq_size: 512
+      tcp_read_timeout: "1s"
+      tcp_write_timeout: "5s"
+      wait_timeout: "1s"
+      max_msg_len: 1024000
+      session_name: "server"
diff --git a/golang/registry/servicediscovery/nacos/go-client/app/client.go b/golang/registry/servicediscovery/nacos/go-client/app/client.go
index 82259ff..17700fc 100755
--- a/golang/registry/servicediscovery/nacos/go-client/app/client.go
+++ b/golang/registry/servicediscovery/nacos/go-client/app/client.go
@@ -68,7 +68,7 @@
 
 	println("\n\n\nstart to test dubbo")
 	user := &User{}
-	for i := 0; i< 5; i++  {
+	for i := 0; i < 5; i++ {
 		err := userProvider.GetUser(context.TODO(), []interface{}{"A001"}, user)
 		if err != nil {
 			panic(err)
diff --git a/golang/tracing/grpc/go-client/app/client.go b/golang/tracing/grpc/go-client/app/client.go
index 0bdd354..0135cb0 100644
--- a/golang/tracing/grpc/go-client/app/client.go
+++ b/golang/tracing/grpc/go-client/app/client.go
@@ -106,4 +106,3 @@
 		}
 	}
 }
-
diff --git a/golang/tracing/grpc/go-client/app/helloworld.pb.go b/golang/tracing/grpc/go-client/app/helloworld.pb.go
index 61361f5..75e18b9 100644
--- a/golang/tracing/grpc/go-client/app/helloworld.pb.go
+++ b/golang/tracing/grpc/go-client/app/helloworld.pb.go
@@ -254,7 +254,7 @@
 	args = append(args, in)
 	invo := invocation.NewRPCInvocation("SayHello", args, nil)
 	if interceptor == nil {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	info := &grpc.UnaryServerInfo{
@@ -262,7 +262,7 @@
 		FullMethod: "/main.Greeter/SayHello",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	return interceptor(ctx, in, info, handler)
diff --git a/golang/tracing/grpc/go-server/app/helloworld.pb.go b/golang/tracing/grpc/go-server/app/helloworld.pb.go
index 61361f5..75e18b9 100644
--- a/golang/tracing/grpc/go-server/app/helloworld.pb.go
+++ b/golang/tracing/grpc/go-server/app/helloworld.pb.go
@@ -254,7 +254,7 @@
 	args = append(args, in)
 	invo := invocation.NewRPCInvocation("SayHello", args, nil)
 	if interceptor == nil {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	info := &grpc.UnaryServerInfo{
@@ -262,7 +262,7 @@
 		FullMethod: "/main.Greeter/SayHello",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		result := base.GetProxyImpl().Invoke(context.Background(),invo)
+		result := base.GetProxyImpl().Invoke(context.Background(), invo)
 		return result.Result(), result.Error()
 	}
 	return interceptor(ctx, in, info, handler)