From 1f5634e39de1e885a46934ee56bf2c6db69e989b Mon Sep 17 00:00:00 2001
From: Haotian Zhang <928016560@qq.com>
Date: Thu, 8 Sep 2022 19:46:34 +0800
Subject: [PATCH] feat:optimize examples. (#576)

---
 CHANGELOG.md                                  |  1 +
 .../annotation/SpringValueProcessor.java      |  3 +-
 .../spring/property/PlaceholderHelper.java    |  3 +-
 .../config/spring/property/SpringValue.java   |  7 +-
 .../property/SpringValueDefinition.java       |  3 +-
 .../spring/property/SpringValueRegistry.java  |  3 +-
 .../metadata-transfer-example/README-zh.md    | 48 +++++----
 .../metadata-transfer-example/README.md       | 55 ++++++-----
 .../metadata-backend/pom.xml                  | 93 ++++++++++--------
 .../src/main/resources/bootstrap.yml          |  2 +-
 .../metadata-frontend/pom.xml                 | 98 +++++++++++--------
 .../src/main/resources/bootstrap.yml          |  4 +-
 .../metadata-middle/pom.xml                   | 98 +++++++++++--------
 .../src/main/resources/bootstrap.yml          |  2 +-
 .../metadata-transfer-example/pom.xml         | 22 -----
 .../polaris-circuitbreaker-example-a/pom.xml  | 61 ++++++------
 .../circuitbreaker/example/ProviderB.java     |  5 +-
 .../example/ProviderBFallback.java            |  1 -
 .../src/main/resources/polaris.yml            | 14 ---
 .../polaris-circuitbreaker-example-b/pom.xml  | 81 ++++++++-------
 .../example/ServiceBController.java           |  1 +
 .../polaris-circuitbreaker-example-b2/pom.xml | 10 +-
 .../example/ServiceBController.java           |  1 +
 .../polaris-circuitbreaker-example/pom.xml    |  8 --
 .../config/example/ConfigController.java      |  1 -
 .../cloud/polaris/config/example/Person.java  |  1 -
 .../example/PersonConfigChangeListener.java   |  1 -
 .../PolarisConfigExampleApplication.java      |  1 -
 .../discovery-callee-service/pom.xml          | 81 +++++++--------
 .../callee/DiscoveryCalleeController.java     |  1 -
 .../callee/DiscoveryCalleeService.java        |  1 -
 .../src/main/resources/bootstrap.yml          |  6 +-
 .../discovery-caller-service/pom.xml          | 89 ++++++++---------
 .../caller/DiscoveryCalleeService.java        |  4 +-
 .../DiscoveryCalleeServiceFallback.java       |  1 -
 .../caller/DiscoveryCallerController.java     |  1 -
 .../caller/DiscoveryCallerService.java        |  1 -
 .../callee/GatewayCalleeApplication.java      |  1 -
 .../callee/GatewayCalleeController.java       |  1 -
 .../src/main/resources/bootstrap.yml          |  2 +
 .../callee/GatewayCalleeApplication2.java     |  1 -
 .../callee/GatewayCalleeController.java       |  1 -
 .../example/scg/GatewayScgApplication.java    |  1 -
 .../src/main/resources/bootstrap.yml          |  8 +-
 .../service/callee/CustomLabelResolver.java   |  1 -
 .../callee/RateLimitCalleeService.java        |  1 -
 .../polaris-router-example/pom.xml            | 32 +-----
 .../router-callee-service1/pom.xml            |  9 +-
 .../example/RouterCalleeApplication1.java     |  1 -
 .../example/RouterCalleeController.java       |  1 -
 .../router-callee-service2/pom.xml            |  9 +-
 .../example/RouterCalleeApplication2.java     |  1 -
 .../example/RouterCalleeController.java       |  1 -
 .../router-caller-service/pom.xml             | 19 +++-
 .../CustomSpringWebRouterLabelResolver.java   |  1 -
 .../router/example/RouterCalleeService.java   |  1 -
 .../example/RouterCallerApplication.java      |  1 -
 .../example/RouterCallerController.java       |  1 -
 .../BlockingLoadBalancerClientAspect.java     |  3 +-
 .../RibbonLoadBalancerClientAspect.java       |  3 +-
 60 files changed, 452 insertions(+), 461 deletions(-)
 delete mode 100644 spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/resources/polaris.yml

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c22458cb6..d5f936e5a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,3 +28,4 @@
 - [Optimize: optimize report call result for restTemplate.](https://github.com/Tencent/spring-cloud-tencent/pull/562)
 - [feat:add spring-cloud-starter-tencent-all and quickstart examples.](https://github.com/Tencent/spring-cloud-tencent/pull/567)
 - [fix:fix wrong internal config file load order.](https://github.com/Tencent/spring-cloud-tencent/pull/572)
+- [feat:optimize examples.](https://github.com/Tencent/spring-cloud-tencent/pull/576)
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java
index 059b65a18..75d4dc31a 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/SpringValueProcessor.java
@@ -49,8 +49,7 @@ import org.springframework.lang.NonNull;
 
 /**
  * Spring value processor of field or method which has @Value and xml config placeholders.
- * <br/>
- * <br/>
+ * <p>
  * This source file was originally from:
  * <code><a href=https://github.com/apolloconfig/apollo/blob/master/apollo-client/src/main/java/com/ctrip/framework/apollo/spring/annotation/SpringValueProcessor.java>
  *     SpringValueProcessor</a></code>
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java
index a2223dc78..8827fa3ed 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java
@@ -31,8 +31,7 @@ import org.springframework.util.StringUtils;
 
 /**
  * Placeholder helper functions.
- * <br/>
- * <br/>
+ * <p>
  * This source file was originally from:
  * <code><a href=https://github.com/apolloconfig/apollo/blob/master/apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/PlaceholderHelper.java>
  *     PlaceholderHelper</a></code>
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValue.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValue.java
index ddde1f525..01b1861f8 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValue.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValue.java
@@ -26,8 +26,7 @@ import org.springframework.core.MethodParameter;
 
 /**
  * Spring @Value method info.
- * <br/>
- * <br/>
+ * <p>
  * This source file was originally from:
  * <code><a href=https://github.com/apolloconfig/apollo/blob/master/apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/SpringValue.java>
  *     SpringValue</a></code>
@@ -36,13 +35,13 @@ import org.springframework.core.MethodParameter;
  */
 public class SpringValue {
 
-	private MethodParameter methodParameter;
-	private Field field;
 	private final WeakReference<Object> beanRef;
 	private final String beanName;
 	private final String key;
 	private final String placeholder;
 	private final Class<?> targetType;
+	private MethodParameter methodParameter;
+	private Field field;
 
 	public SpringValue(String key, String placeholder, Object bean, String beanName, Field field) {
 		this.beanRef = new WeakReference<>(bean);
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinition.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinition.java
index a3382fd5d..fa7612fe0 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinition.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinition.java
@@ -19,8 +19,7 @@ package com.tencent.cloud.polaris.config.spring.property;
 
 /**
  * Spring value.
- * <br/>
- * <br/>
+ * <p>
  * This source file was originally from:
  * <code><a href=https://github.com/apolloconfig/apollo/blob/master/apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/SpringValueDefinition.java>
  *     SpringValueDefinition</a></code>
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java
index 78ed172f5..473ed909e 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueRegistry.java
@@ -36,8 +36,7 @@ import org.springframework.beans.factory.BeanFactory;
 
 /**
  * Spring value auto registry.
- * <br/>
- * <br/>
+ * <p>
  * This source file was originally from:
  * <code><a href=https://github.com/apolloconfig/apollo/blob/master/apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/SpringValueRegistry.java>
  *     SpringValueRegistry</a></code>
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md b/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md
index 764a80c38..e68cffa1e 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/README-zh.md
@@ -24,9 +24,10 @@ spring:
 ### Maven依赖
 
 ```xml
+
 <dependency>
-    <groupId>com.tencent.cloud</groupId>
-    <artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
+	<groupId>com.tencent.cloud</groupId>
+	<artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
 </dependency>
 ```
 
@@ -41,11 +42,11 @@ spring:
 ##### IDEA启动
 
 分别启动
+
 - ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend```的```MetadataFrontendService```
 - ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle```的```MetadataMiddleService```
 - ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend```的```MetadataBackendService```
 
-
 ##### Maven打包启动
 
 在```spring-cloud-tencent-examples/metadata-transfer-example```下执行
@@ -76,7 +77,7 @@ spring:
           # 示例：本地元数据，默认不在链路中传递
           CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
           # 示例：可传递元数据
-          CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE
+          CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE-FRONTEND
           # 示例：一次性元数据
           CUSTOM-METADATA-KEY-DISPOSABLE: CUSTOM-VALUE-DISPOSABLE-FRONTEND
         # 指定哪个元数据的键值将沿着链接传递
@@ -123,16 +124,15 @@ curl -L -X GET 'http://127.0.0.1:48080/metadata/service/frontend/feign/info'
 ```json
 {
   "frontend-transitive-metadata": {
-    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE"
+    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE-FRONTEND"
   },
   "frontend-upstream-disposable-metadata": {
   },
   "frontend-local-disposable-metadata": {
     "CUSTOM-METADATA-KEY-DISPOSABLE": "CUSTOM-VALUE-DISPOSABLE-FRONTEND"
   },
-  
   "middle-transitive-metadata": {
-    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE",
+    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE-FRONTEND",
     "CUSTOM-METADATA-KEY-TRANSITIVE-2": "CUSTOM-VALUE-TRANSITIVE-2"
   },
   "middle-upstream-disposable-metadata": {
@@ -141,9 +141,8 @@ curl -L -X GET 'http://127.0.0.1:48080/metadata/service/frontend/feign/info'
   "middle-local-disposable-metadata": {
     "CUSTOM-METADATA-KEY-DISPOSABLE": "CUSTOM-VALUE-DISPOSABLE-MIDDLE"
   },
-  
   "backend-transitive-metadata": {
-    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE",
+    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE-FRONTEND",
     "CUSTOM-METADATA-KEY-TRANSITIVE-2": "CUSTOM-VALUE-TRANSITIVE-2"
   },
   "backend-upstream-disposable-metadata": {
@@ -166,35 +165,32 @@ curl -L -X GET 'http://127.0.0.1:48080/metadata/service/frontend/feign/info'
 
 - 获取全局传递的元数据
 
-```java
-MetadataContext context = MetadataContextHolder.get();
-        Map<String, String> customMetadataMap = context.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
-
-customMetadataMap.forEach((key, value) -> {
-    // ...
+```
+MetadataContext context=MetadataContextHolder.get();
+Map<String, String> customMetadataMap=context.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
+customMetadataMap.forEach((key,value)->{
+	// ...
 });
-
 ```
 
 - 获取上游传递过来的一次性元数据
 
-```java
-Map<String, String> upstreamDisposableMetadatas = MetadataContextHolder.getAllDisposableMetadata(true);
-upstreamDisposableMetadatas.forEach((key, value) -> {
-    // ...
+```
+Map<String, String> upstreamDisposableMetadatas=MetadataContextHolder.getAllDisposableMetadata(true);
+upstreamDisposableMetadatas.forEach((key,value)->{
+	// ...
 });
 ```
 
 - 获取本地配置的一次性元数据
 
-```java
-Map<String, String> localDisposableMetadatas = MetadataContextHolder.getAllDisposableMetadata(false);
-localDisposableMetadatas.forEach((key, value) -> {
-    // ...
+```
+Map<String, String> localDisposableMetadatas=MetadataContextHolder.getAllDisposableMetadata(false);
+localDisposableMetadatas.forEach((key,value)->{
+	// ...
 });
 ```
 
-
 ### Wiki参考
 
-查看 [Spring Cloud Tencent Metadata Transfer 使用指南](https://github.com/Tencent/spring-cloud-tencent/wiki/Spring-Cloud-Tencent-Metadata-Transfer-%E4%BD%BF%E7%94%A8%E6%8C%87%E5%8D%97) .
\ No newline at end of file
+查看 [Spring Cloud Tencent Metadata Transfer 使用指南](https://github.com/Tencent/spring-cloud-tencent/wiki/Spring-Cloud-Tencent-Metadata-Transfer-%E4%BD%BF%E7%94%A8%E6%8C%87%E5%8D%97)。
\ No newline at end of file
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/README.md b/spring-cloud-tencent-examples/metadata-transfer-example/README.md
index 9fc663666..5fd736ba5 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/README.md
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/README.md
@@ -25,9 +25,10 @@ spring:
 ### Maven Dependency
 
 ```xml
+
 <dependency>
-    <groupId>com.tencent.cloud</groupId>
-    <artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
+	<groupId>com.tencent.cloud</groupId>
+	<artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
 </dependency>
 ```
 
@@ -62,10 +63,10 @@ java -jar ${app.jar}
 
 Launch application, change ${app.jar} to jar's package name.
 
-
 ### Metadata Configuration
 
-- In the ```bootstrap.yml``` configuration file of the ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend``` project
+- In the ```bootstrap.yml``` configuration file of
+  the ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend``` project
 
 ```yaml
 spring:
@@ -77,7 +78,7 @@ spring:
           # Example: intransitive
           CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
           # Example: transitive
-          CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE
+          CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE-FRONTEND
           # Example: disposable
           CUSTOM-METADATA-KEY-DISPOSABLE: CUSTOM-VALUE-DISPOSABLE-FRONTEND
         # Assigned which metadata key-value will be passed along the link
@@ -89,7 +90,8 @@ spring:
 
 ```
 
-- In the ```bootstrap.yml``` configuration file of the ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle``` project
+- In the ```bootstrap.yml``` configuration file of
+  the ```spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle``` project
 
 ```yaml
 spring:
@@ -110,7 +112,6 @@ spring:
         # Specify which metadata key value will be passed only once (one-step)
         disposable:
           - CUSTOM-METADATA-KEY-DISPOSABLE
-
 ```
 
 ### Verify
@@ -126,7 +127,7 @@ Expected return rate
 ```
 {
   "frontend-transitive-metadata": {
-    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE"
+    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE-FRONTEND"
   },
   "frontend-upstream-disposable-metadata": {
   },
@@ -135,7 +136,7 @@ Expected return rate
   },
   
   "middle-transitive-metadata": {
-    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE",
+    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE-FRONTEND",
     "CUSTOM-METADATA-KEY-TRANSITIVE-2": "CUSTOM-VALUE-TRANSITIVE-2"
   },
   "middle-upstream-disposable-metadata": {
@@ -146,7 +147,7 @@ Expected return rate
   },
   
   "backend-transitive-metadata": {
-    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE",
+    "CUSTOM-METADATA-KEY-TRANSITIVE": "CUSTOM-VALUE-TRANSITIVE-FRONTEND",
     "CUSTOM-METADATA-KEY-TRANSITIVE-2": "CUSTOM-VALUE-TRANSITIVE-2"
   },
   "backend-upstream-disposable-metadata": {
@@ -162,41 +163,43 @@ Response value description
 > `*` (asterisk), representing `frontend`, `middle`, `backend` in the example.
 
 - Key `*-transitive-metadata` represents all the passable (fully linked) metadata configured by default in the service.
-- Key `*-upstream-disposable-metadata` indicates the one-time transmissible metadata obtained from upstream requests in the service.
-- Key `*-local-disposable-metadata` indicates the one-time metadata passed downstream as configured by the current service.
+- Key `*-upstream-disposable-metadata` indicates the one-time transmissible metadata obtained from upstream requests in
+  the service.
+- Key `*-local-disposable-metadata` indicates the one-time metadata passed downstream as configured by the current
+  service.
 
 ### How to get the passed metadata via Api
 
 - Get the metadata passed globally
 
-```java
-MetadataContext context = MetadataContextHolder.get();
-        Map<String, String> customMetadataMap = context.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
+```
+MetadataContext context=MetadataContextHolder.get();
+Map<String, String> customMetadataMap=context.getFragmentContext(MetadataContext.FRAGMENT_TRANSITIVE);
 
-customMetadataMap.forEach((key, value) -> {
+customMetadataMap.forEach((key,value)->{
     // ...
 });
 ```
 
 - Get disposable(one-time) metadata passed from upstream
 
-```java
-Map<String, String> upstreamDisposableMetadatas = MetadataContextHolder.getAllDisposableMetadata(true);
-upstreamDisposableMetadatas.forEach((key, value) -> {
-    // ...
+```
+Map<String, String> upstreamDisposableMetadatas=MetadataContextHolder.getAllDisposableMetadata(true);
+upstreamDisposableMetadatas.forEach((key,value)->{
+	// ...
 });
 ```
 
 - Get disposable(one-time) metadata for local configuration
 
-```java
-Map<String, String> localDisposableMetadatas = MetadataContextHolder.getAllDisposableMetadata(false);
-localDisposableMetadatas.forEach((key, value) -> {
-    // ...
+```
+Map<String, String> localDisposableMetadatas=MetadataContextHolder.getAllDisposableMetadata(false);
+localDisposableMetadatas.forEach((key,value)->{
+	// ...
 });
 ```
 
-
 ### Wiki Reference
 
-See [Spring Cloud Tencent Metadata Transfer Usage Document](https://github.com/Tencent/spring-cloud-tencent/wiki/Spring-Cloud-Tencent-Metadata-Transfer-Usage-Document) for more reference .
+See [Spring Cloud Tencent Metadata Transfer Usage Document](https://github.com/Tencent/spring-cloud-tencent/wiki/Spring-Cloud-Tencent-Metadata-Transfer-Usage-Document)
+for more reference.
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/pom.xml
index 106c2ed78..594e7fd90 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/pom.xml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/pom.xml
@@ -1,51 +1,66 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="http://maven.apache.org/POM/4.0.0"
-        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<parent>
 		<artifactId>metadata-transfer-example</artifactId>
-        <groupId>com.tencent.cloud</groupId>
-        <version>${revision}</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+		<groupId>com.tencent.cloud</groupId>
+		<version>${revision}</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	<modelVersion>4.0.0</modelVersion>
 
-    <artifactId>metadata-backend</artifactId>
-    <name>Spring Cloud Tencent Metadata Transfer Backend Service</name>
+	<artifactId>metadata-backend</artifactId>
+	<name>Spring Cloud Tencent Metadata Transfer Backend Service</name>
 
-    <dependencies>
+	<dependencies>
 		<dependency>
 			<groupId>com.tencent.cloud</groupId>
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>com.tencent.cloud</groupId>
+			<artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-webflux</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
 	</dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/src/main/resources/bootstrap.yml
index 4188f3cc3..b854ea342 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-backend/src/main/resources/bootstrap.yml
@@ -17,4 +17,4 @@ management:
     web:
       exposure:
         include:
-          - polaris-metadata
\ No newline at end of file
+          - polaris-metadata
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/pom.xml
index 4b6adb14e..ce674c218 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/pom.xml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/pom.xml
@@ -1,51 +1,71 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="http://maven.apache.org/POM/4.0.0"
-        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<parent>
 		<artifactId>metadata-transfer-example</artifactId>
-        <groupId>com.tencent.cloud</groupId>
-        <version>${revision}</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+		<groupId>com.tencent.cloud</groupId>
+		<version>${revision}</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	<modelVersion>4.0.0</modelVersion>
 
-    <artifactId>metadata-frontend</artifactId>
-    <name>Spring Cloud Tencent Metadata Transfer Frontent Service</name>
+	<artifactId>metadata-frontend</artifactId>
+	<name>Spring Cloud Tencent Metadata Transfer Frontent Service</name>
 
-    <dependencies>
+	<dependencies>
 		<dependency>
 			<groupId>com.tencent.cloud</groupId>
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>com.tencent.cloud</groupId>
+			<artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-openfeign</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
 	</dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/src/main/resources/bootstrap.yml
index 719424131..a2f71d74f 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-frontend/src/main/resources/bootstrap.yml
@@ -20,7 +20,7 @@ spring:
           # Example: intransitive
           CUSTOM-METADATA-KEY-LOCAL: CUSTOM-VALUE-LOCAL
           # Example: disposable
-          CUSTOM-METADATA-KEY-DISPOSABLE: CUSTOM-VALUE-DISPOSABLE
+          CUSTOM-METADATA-KEY-DISPOSABLE: CUSTOM-VALUE-DISPOSABLE-FRONTEND
           # Example: transitive
           CUSTOM-METADATA-KEY-TRANSITIVE: CUSTOM-VALUE-TRANSITIVE-FRONTEND
         # Assigned which metadata key-value will be passed along the link
@@ -33,4 +33,4 @@ management:
     web:
       exposure:
         include:
-          - polaris-metadata
\ No newline at end of file
+          - polaris-metadata
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/pom.xml
index 41c4cd13f..3c0d16992 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/pom.xml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/pom.xml
@@ -1,51 +1,71 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="http://maven.apache.org/POM/4.0.0"
-        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<parent>
 		<artifactId>metadata-transfer-example</artifactId>
-        <groupId>com.tencent.cloud</groupId>
-        <version>${revision}</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+		<groupId>com.tencent.cloud</groupId>
+		<version>${revision}</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	<modelVersion>4.0.0</modelVersion>
 
-    <artifactId>metadata-middle</artifactId>
-    <name>Spring Cloud Tencent Metadata Transfer Middle Service</name>
+	<artifactId>metadata-middle</artifactId>
+	<name>Spring Cloud Tencent Metadata Transfer Middle Service</name>
 
-    <dependencies>
+	<dependencies>
 		<dependency>
 			<groupId>com.tencent.cloud</groupId>
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>com.tencent.cloud</groupId>
+			<artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-openfeign</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
 	</dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/src/main/resources/bootstrap.yml
index db78677b5..36dfc0703 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/metadata-middle/src/main/resources/bootstrap.yml
@@ -32,4 +32,4 @@ management:
     web:
       exposure:
         include:
-          - polaris-metadata
\ No newline at end of file
+          - polaris-metadata
diff --git a/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml b/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml
index 2cbc55a3b..f6151cbe2 100644
--- a/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml
+++ b/spring-cloud-tencent-examples/metadata-transfer-example/pom.xml
@@ -19,26 +19,4 @@
 		<module>metadata-middle</module>
 		<module>metadata-backend</module>
 	</modules>
-
-	<dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-web</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-actuator</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-openfeign</artifactId>
-        </dependency>
-
-		<dependency>
-			<groupId>com.tencent.cloud</groupId>
-			<artifactId>spring-cloud-starter-tencent-metadata-transfer</artifactId>
-		</dependency>
-    </dependencies>
 </project>
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/pom.xml b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/pom.xml
index 282093f28..70351a785 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/pom.xml
@@ -19,6 +19,11 @@
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
 
+		<dependency>
+			<groupId>com.tencent.cloud</groupId>
+			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>com.tencent.cloud</groupId>
 			<artifactId>spring-cloud-starter-tencent-polaris-circuitbreaker</artifactId>
@@ -40,33 +45,33 @@
 		</dependency>
 	</dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 
 </project>
\ No newline at end of file
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderB.java b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderB.java
index a4f96e0bb..f0c05217a 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderB.java
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderB.java
@@ -25,15 +25,14 @@ import org.springframework.web.bind.annotation.GetMapping;
  *
  * @author Haotian Zhang
  */
-@FeignClient(name = "polaris-circuitbreaker-example-b",
-		fallback = ProviderBFallback.class)
+@FeignClient(name = "polaris-circuitbreaker-example-b", fallback = ProviderBFallback.class)
 public interface ProviderB {
 
 	/**
 	 * Get info of service B.
+	 *
 	 * @return info of service B
 	 */
 	@GetMapping("/example/service/b/info")
 	String info();
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderBFallback.java b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderBFallback.java
index c357b1e7a..bf47d49dd 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderBFallback.java
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ProviderBFallback.java
@@ -31,5 +31,4 @@ public class ProviderBFallback implements ProviderB {
 	public String info() {
 		return "trigger the refuse for service b";
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/resources/polaris.yml b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/resources/polaris.yml
deleted file mode 100644
index fbe20fc8f..000000000
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-a/src/main/resources/polaris.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-consumer:
-  circuitBreaker:
-    checkPeriod: 100ms
-    chain:
-      - errorCount
-      - errorRate
-    plugin:
-      errorCount:
-        continuousErrorThreshold: 1
-        metricNumBuckets: 1
-      errorRate:
-        errorRateThreshold: 100
-        metricStatTimeWindow: 1s
-        requestVolumeThreshold: 1
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/pom.xml b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/pom.xml
index 22f3537b9..01dd7904a 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/pom.xml
@@ -1,16 +1,16 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xmlns="http://maven.apache.org/POM/4.0.0"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
-        <artifactId>polaris-circuitbreaker-example</artifactId>
-        <groupId>com.tencent.cloud</groupId>
-        <version>${revision}</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<parent>
+		<artifactId>polaris-circuitbreaker-example</artifactId>
+		<groupId>com.tencent.cloud</groupId>
+		<version>${revision}</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	<modelVersion>4.0.0</modelVersion>
 
-    <artifactId>polaris-circuitbreaker-example-b</artifactId>
+	<artifactId>polaris-circuitbreaker-example-b</artifactId>
 	<name>Polaris Circuit Breaker Example B</name>
 
 	<dependencies>
@@ -18,34 +18,39 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-webflux</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>com.tencent.cloud</groupId>
+			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
+		</dependency>
 	</dependencies>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
\ No newline at end of file
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ServiceBController.java b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ServiceBController.java
index 99b8410d8..128ea5e4d 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ServiceBController.java
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b/src/main/java/com/tencent/cloud/polaris/circuitbreaker/example/ServiceBController.java
@@ -33,6 +33,7 @@ public class ServiceBController {
 
 	/**
 	 * Get service information.
+	 *
 	 * @return service information
 	 */
 	@GetMapping("/info")
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/pom.xml b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/pom.xml
index ba28b0cdd..340de2286 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<parent>
 		<artifactId>polaris-circuitbreaker-example</artifactId>
@@ -12,12 +12,16 @@
 
 	<artifactId>polaris-circuitbreaker-example-b2</artifactId>
 
-
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-webflux</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>com.tencent.cloud</groupId>
+			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
+		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/src/main/java/com/tencent/cloud/polaris/ciruitbreaker/example/ServiceBController.java b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/src/main/java/com/tencent/cloud/polaris/ciruitbreaker/example/ServiceBController.java
index 83dc45303..384167816 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/src/main/java/com/tencent/cloud/polaris/ciruitbreaker/example/ServiceBController.java
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/polaris-circuitbreaker-example-b2/src/main/java/com/tencent/cloud/polaris/ciruitbreaker/example/ServiceBController.java
@@ -35,6 +35,7 @@ public class ServiceBController {
 
 	/**
 	 * Get service information.
+	 *
 	 * @return service information
 	 */
 	@GetMapping("/info")
diff --git a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/pom.xml b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/pom.xml
index 5876625dc..6b5daa263 100644
--- a/spring-cloud-tencent-examples/polaris-circuitbreaker-example/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-circuitbreaker-example/pom.xml
@@ -19,12 +19,4 @@
 		<module>polaris-circuitbreaker-example-b</module>
 		<module>polaris-circuitbreaker-example-b2</module>
 	</modules>
-
-	<dependencies>
-		<dependency>
-			<groupId>com.tencent.cloud</groupId>
-			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
-		</dependency>
-	</dependencies>
-
 </project>
diff --git a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/ConfigController.java b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/ConfigController.java
index d06a732e3..008ed33d5 100644
--- a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/ConfigController.java
+++ b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/ConfigController.java
@@ -51,5 +51,4 @@ public class ConfigController {
 	public String person() {
 		return person.toString();
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/Person.java b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/Person.java
index 1d97d1fb9..1a88235de 100644
--- a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/Person.java
+++ b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/Person.java
@@ -54,5 +54,4 @@ public class Person {
 	public String toString() {
 		return "User{" + "name='" + name + '\'' + ", age=" + age + '}';
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PersonConfigChangeListener.java b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PersonConfigChangeListener.java
index b0efd8b36..150e25e20 100644
--- a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PersonConfigChangeListener.java
+++ b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PersonConfigChangeListener.java
@@ -45,5 +45,4 @@ public final class PersonConfigChangeListener {
 			System.out.printf("%s = %s \n", changedKey, event.getChange(changedKey));
 		}
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PolarisConfigExampleApplication.java b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PolarisConfigExampleApplication.java
index a632cf231..37544956b 100644
--- a/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PolarisConfigExampleApplication.java
+++ b/spring-cloud-tencent-examples/polaris-config-example/src/main/java/com/tencent/cloud/polaris/config/example/PolarisConfigExampleApplication.java
@@ -31,5 +31,4 @@ public class PolarisConfigExampleApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(PolarisConfigExampleApplication.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/pom.xml b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/pom.xml
index 5d76407e8..71538a556 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/pom.xml
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="http://maven.apache.org/POM/4.0.0"
-        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
-        <artifactId>polaris-discovery-example</artifactId>
-        <groupId>com.tencent.cloud</groupId>
-        <version>${revision}</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<parent>
+		<artifactId>polaris-discovery-example</artifactId>
+		<groupId>com.tencent.cloud</groupId>
+		<version>${revision}</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	<modelVersion>4.0.0</modelVersion>
 
-    <artifactId>discovery-callee-service</artifactId>
-    <name>Polaris Discovery Callee Service</name>
+	<artifactId>discovery-callee-service</artifactId>
+	<name>Polaris Discovery Callee Service</name>
 
-    <dependencies>
+	<dependencies>
 		<dependency>
 			<groupId>com.tencent.cloud</groupId>
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
@@ -34,32 +34,33 @@
 		<!--            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>-->
 		<!--        </dependency>-->
 	</dependencies>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeController.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeController.java
index 408469223..7c4d82171 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeController.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeController.java
@@ -61,5 +61,4 @@ public class DiscoveryCalleeController {
 		LOG.info("Discovery Service Callee is called and sum is {}.", value1 + value2);
 		return value1 + value2;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeService.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeService.java
index 72229bb0a..9063ae984 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeService.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/DiscoveryCalleeService.java
@@ -31,5 +31,4 @@ public class DiscoveryCalleeService {
 	public static void main(String[] args) {
 		SpringApplication.run(DiscoveryCalleeService.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/resources/bootstrap.yml
index 42dbeeb6e..9c57e95cb 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/resources/bootstrap.yml
@@ -11,9 +11,6 @@ spring:
       discovery:
         enabled: true
         register: true
-      rpc-enhancement:
-        reporter:
-          enabled: true
       stat:
         enabled: true
         port: 28082
@@ -24,6 +21,9 @@ spring:
       metadata:
         content:
           region: shanghai
+      rpc-enhancement:
+        reporter:
+          enabled: true
 #    consul:
 #      port: 8500
 #      host: 127.0.0.1
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/pom.xml b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/pom.xml
index f1e88d78b..f31856e6c 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/pom.xml
@@ -1,24 +1,24 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="http://maven.apache.org/POM/4.0.0"
-        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <parent>
-        <artifactId>polaris-discovery-example</artifactId>
-        <groupId>com.tencent.cloud</groupId>
-        <version>${revision}</version>
-        <relativePath>../pom.xml</relativePath>
-    </parent>
-    <modelVersion>4.0.0</modelVersion>
+		 xmlns="http://maven.apache.org/POM/4.0.0"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<parent>
+		<artifactId>polaris-discovery-example</artifactId>
+		<groupId>com.tencent.cloud</groupId>
+		<version>${revision}</version>
+		<relativePath>../pom.xml</relativePath>
+	</parent>
+	<modelVersion>4.0.0</modelVersion>
 
-    <artifactId>discovery-caller-service</artifactId>
-    <name>Polaris Discovery Caller Service</name>
+	<artifactId>discovery-caller-service</artifactId>
+	<name>Polaris Discovery Caller Service</name>
 
-    <properties>
-        <java.version>1.8</java.version>
-    </properties>
+	<properties>
+		<java.version>1.8</java.version>
+	</properties>
 
-    <dependencies>
-        <dependency>
+	<dependencies>
+		<dependency>
 			<groupId>com.tencent.cloud</groupId>
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
 		</dependency>
@@ -37,32 +37,33 @@
 		<!--            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>-->
 		<!--        </dependency>-->
 	</dependencies>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-source-plugin</artifactId>
-                <version>3.2.0</version>
-                <executions>
-                    <execution>
-                        <id>attach-sources</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-        </plugins>
-    </build>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<executions>
+					<execution>
+						<goals>
+							<goal>repackage</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-source-plugin</artifactId>
+				<version>3.2.0</version>
+				<executions>
+					<execution>
+						<id>attach-sources</id>
+						<goals>
+							<goal>jar</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
 </project>
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeService.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeService.java
index 11b65c780..44d20df14 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeService.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeService.java
@@ -26,8 +26,7 @@ import org.springframework.web.bind.annotation.RequestParam;
  *
  * @author Haotian Zhang
  */
-@FeignClient(value = "DiscoveryCalleeService",
-		fallback = DiscoveryCalleeServiceFallback.class)
+@FeignClient(value = "DiscoveryCalleeService", fallback = DiscoveryCalleeServiceFallback.class)
 public interface DiscoveryCalleeService {
 
 	/**
@@ -38,5 +37,4 @@ public interface DiscoveryCalleeService {
 	 */
 	@GetMapping("/discovery/service/callee/sum")
 	int sum(@RequestParam("value1") int value1, @RequestParam("value2") int value2);
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeServiceFallback.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeServiceFallback.java
index c526c9582..3b78eb3bc 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeServiceFallback.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCalleeServiceFallback.java
@@ -31,5 +31,4 @@ public class DiscoveryCalleeServiceFallback implements DiscoveryCalleeService {
 	public int sum(int value1, int value2) {
 		return 0;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerController.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerController.java
index d0b5722ee..b07c2267e 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerController.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerController.java
@@ -69,5 +69,4 @@ public class DiscoveryCallerController {
 	public String healthCheck() {
 		return "pk ok";
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java
index 0eae4b427..86aceffbe 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/java/com/tencent/cloud/polaris/discovery/service/caller/DiscoveryCallerService.java
@@ -42,5 +42,4 @@ public class DiscoveryCallerService {
 	public RestTemplate restTemplate() {
 		return new RestTemplate();
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication.java b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication.java
index 4e5e816bd..57d205e5e 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication.java
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication.java
@@ -31,5 +31,4 @@ public class GatewayCalleeApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(GatewayCalleeApplication.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java
index 79050dc4d..1c88b96b9 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java
@@ -76,5 +76,4 @@ public class GatewayCalleeController {
 		str = ESAPI.encoder().encodeForHTML(str);
 		return str;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/resources/bootstrap.yml
index 137da64e1..c6d40440f 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service/src/main/resources/bootstrap.yml
@@ -7,6 +7,8 @@ spring:
   cloud:
     tencent:
       metadata:
+        content:
+          env: blue
     polaris:
       address: grpc://183.47.111.80:8091
       namespace: default
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication2.java b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication2.java
index 5d261d56f..f6a942abd 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication2.java
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeApplication2.java
@@ -31,5 +31,4 @@ public class GatewayCalleeApplication2 {
 	public static void main(String[] args) {
 		SpringApplication.run(GatewayCalleeApplication2.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java
index 79050dc4d..1c88b96b9 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-callee-service2/src/main/java/com/tencent/cloud/polaris/gateway/example/callee/GatewayCalleeController.java
@@ -76,5 +76,4 @@ public class GatewayCalleeController {
 		str = ESAPI.encoder().encodeForHTML(str);
 		return str;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/java/com/tencent/cloud/polaris/gateway/example/scg/GatewayScgApplication.java b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/java/com/tencent/cloud/polaris/gateway/example/scg/GatewayScgApplication.java
index 6d5694d05..7bf729994 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/java/com/tencent/cloud/polaris/gateway/example/scg/GatewayScgApplication.java
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/java/com/tencent/cloud/polaris/gateway/example/scg/GatewayScgApplication.java
@@ -31,5 +31,4 @@ public class GatewayScgApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(GatewayScgApplication.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/resources/bootstrap.yml
index f4dda3aa8..b0890b999 100644
--- a/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/polaris-gateway-example/gateway-scg-service/src/main/resources/bootstrap.yml
@@ -7,7 +7,7 @@ spring:
   cloud:
     tencent:
       plugin:
-        scg: 
+        scg:
           staining:
             enabled: true
             rule-staining:
@@ -66,9 +66,3 @@ spring:
             - Path=/GatewayCalleeService/**
           filters:
             - StripPrefix=1
-
-logging:
-  level:
-    com.tencent.cloud.plugin.gateway: debug
-    org.springframework.cloud.gateway: info
-    com.tencent.cloud.polaris: debug
diff --git a/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/CustomLabelResolver.java b/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/CustomLabelResolver.java
index f441f4d2b..06ff020a2 100644
--- a/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/CustomLabelResolver.java
+++ b/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/CustomLabelResolver.java
@@ -44,5 +44,4 @@ public class CustomLabelResolver implements PolarisRateLimiterLabelServletResolv
 
 		return labels;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/RateLimitCalleeService.java b/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/RateLimitCalleeService.java
index e28c34252..12a9270cc 100644
--- a/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/RateLimitCalleeService.java
+++ b/spring-cloud-tencent-examples/polaris-ratelimit-example/ratelimit-callee-service/src/main/java/com/tencent/cloud/ratelimit/example/service/callee/RateLimitCalleeService.java
@@ -40,5 +40,4 @@ public class RateLimitCalleeService {
 	public RestTemplate restTemplate() {
 		return new RestTemplate();
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/pom.xml b/spring-cloud-tencent-examples/polaris-router-example/pom.xml
index 8bd99b3c1..5ae91d8bf 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-router-example/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<parent>
 		<artifactId>spring-cloud-tencent-examples</artifactId>
@@ -18,32 +18,4 @@
 		<module>router-callee-service2</module>
 		<module>router-caller-service</module>
 	</modules>
-
-	<dependencies>
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
-		</dependency>
-
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-actuator</artifactId>
-		</dependency>
-
-		<dependency>
-			<groupId>org.springframework.cloud</groupId>
-			<artifactId>spring-cloud-starter-openfeign</artifactId>
-		</dependency>
-
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-actuator</artifactId>
-		</dependency>
-
-		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-actuator-autoconfigure</artifactId>
-		</dependency>
-	</dependencies>
-
 </project>
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/pom.xml b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/pom.xml
index bbf3bdb93..b18c63f42 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<parent>
 		<artifactId>polaris-router-example</artifactId>
@@ -18,6 +18,11 @@
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>org.owasp.esapi</groupId>
 			<artifactId>esapi</artifactId>
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication1.java b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication1.java
index 6b481e472..9c36234c4 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication1.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication1.java
@@ -32,5 +32,4 @@ public class RouterCalleeApplication1 {
 	public static void main(String[] args) {
 		SpringApplication.run(RouterCalleeApplication1.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java
index f42cd969d..6693cf08e 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service1/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java
@@ -59,5 +59,4 @@ public class RouterCalleeController {
 		u.setAge(user.getAge());
 		return u;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/pom.xml b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/pom.xml
index 2397f4481..1f33825f0 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<parent>
 		<artifactId>polaris-router-example</artifactId>
@@ -18,6 +18,11 @@
 			<artifactId>spring-cloud-starter-tencent-polaris-discovery</artifactId>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-webflux</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>org.owasp.esapi</groupId>
 			<artifactId>esapi</artifactId>
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication2.java b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication2.java
index 9664f46d3..076a002f0 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication2.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeApplication2.java
@@ -32,5 +32,4 @@ public class RouterCalleeApplication2 {
 	public static void main(String[] args) {
 		SpringApplication.run(RouterCalleeApplication2.class, args);
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java
index 6d6915b7f..6346cd606 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-callee-service2/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeController.java
@@ -60,5 +60,4 @@ public class RouterCalleeController {
 		u.setAge(user.getAge());
 		return u;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/pom.xml b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/pom.xml
index fbdbf7081..574fea7a1 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/pom.xml
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xmlns="http://maven.apache.org/POM/4.0.0"
 		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<parent>
 		<artifactId>polaris-router-example</artifactId>
@@ -23,6 +23,21 @@
 			<artifactId>spring-cloud-starter-tencent-polaris-router</artifactId>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-actuator</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-openfeign</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>com.google.code.gson</groupId>
 			<artifactId>gson</artifactId>
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomSpringWebRouterLabelResolver.java b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomSpringWebRouterLabelResolver.java
index 44570366d..c0a84bf5f 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomSpringWebRouterLabelResolver.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/CustomSpringWebRouterLabelResolver.java
@@ -48,5 +48,4 @@ public class CustomSpringWebRouterLabelResolver implements SpringWebRouterLabelR
 		labels.put("user", user.getName());
 		return labels;
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeService.java b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeService.java
index 7f1f1db39..d8f7df0ff 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeService.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCalleeService.java
@@ -33,5 +33,4 @@ public interface RouterCalleeService {
 
 	@PostMapping("/router/service/callee/info")
 	String info(@RequestParam("name") String name, @RequestBody User user);
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerApplication.java b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerApplication.java
index ac0547a71..d77adc733 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerApplication.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerApplication.java
@@ -43,5 +43,4 @@ public class RouterCallerApplication {
 	public RestTemplate restTemplate() {
 		return new RestTemplate();
 	}
-
 }
diff --git a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerController.java b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerController.java
index 866069d24..f296393a0 100644
--- a/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerController.java
+++ b/spring-cloud-tencent-examples/polaris-router-example/router-caller-service/src/main/java/com/tencent/cloud/polaris/router/example/RouterCallerController.java
@@ -73,5 +73,4 @@ public class RouterCallerController {
 	public String healthCheck() {
 		return "pk ok";
 	}
-
 }
diff --git a/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/BlockingLoadBalancerClientAspect.java b/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/BlockingLoadBalancerClientAspect.java
index bc2cdd05e..418ce4846 100644
--- a/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/BlockingLoadBalancerClientAspect.java
+++ b/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/BlockingLoadBalancerClientAspect.java
@@ -23,7 +23,8 @@ import org.aspectj.lang.annotation.Aspect;
 import org.aspectj.lang.annotation.Pointcut;
 
 /**
- * Intercept for BlockingLoadBalancerClient, put host&port to thread local.
+ * Intercept for BlockingLoadBalancerClient, put host and port to thread local.
+ *
  * @author lepdou 2022-09-05
  */
 @Aspect
diff --git a/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/RibbonLoadBalancerClientAspect.java b/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/RibbonLoadBalancerClientAspect.java
index 12b469735..5ea514c85 100644
--- a/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/RibbonLoadBalancerClientAspect.java
+++ b/spring-cloud-tencent-rpc-enhancement/src/main/java/com/tencent/cloud/rpc/enhancement/resttemplate/RibbonLoadBalancerClientAspect.java
@@ -23,7 +23,8 @@ import org.aspectj.lang.annotation.Aspect;
 import org.aspectj.lang.annotation.Pointcut;
 
 /**
- * Intercept for RibbonLoadBalancerClient, put host&port to thread local.
+ * Intercept for RibbonLoadBalancerClient, put host and &port to thread local.
+ *
  * @author lepdou 2022-09-05
  */
 @Aspect