update greenwich docs

spring-cloud-alibaba-docs/src/main/asciidoc-zh/nacos-discovery.adoc

@@ -44,7 +44,7 @@ image::https://img.alicdn.com/tfs/TB1dyWJbQL0gK0jSZFtXXXQCXXa-2788-1086.png[]
 * pom.xml的配置。一个完整的 pom.xml 配置如下所示：
 
 .pom.xml
-[source,xml,indent=0]
+[source,xml]
 ----
 <?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"

spring-cloud-alibaba-docs/src/main/asciidoc-zh/rocketmq.adoc

@@ -166,7 +166,7 @@ NOTE: 在使用 RocketMQ Binder 的同时也可以配置 rocketmq.** 用于触
 MessageBuilder builder = MessageBuilder.withPayload(msg)
     .setHeader(RocketMQHeaders.TAGS, "binder")
     .setHeader(RocketMQHeaders.KEYS, "my-key")
-    .setHeader("DELAY", "1");
+    .setHeader(MessageConst.PROPERTY_DELAY_TIME_LEVEL, "1");
 Message message = builder.build();
 output().send(message);
 ```

spring-cloud-alibaba-docs/src/main/asciidoc-zh/sentinel.adoc

@@ -16,6 +16,7 @@ https://github.com/alibaba/Sentinel[Sentinel] 具有以下特征:
 如果要在您的项目中引入 Sentinel，使用 group ID 为 `com.alibaba.cloud` 和 artifact ID 为 `spring-cloud-starter-alibaba-sentinel` 的 starter。
 
 ```xml
+[source,yaml]
 <dependency>
     <groupId>com.alibaba.cloud</groupId>
     <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
@@ -109,7 +110,6 @@ java -Dserver.port=8080 -Dcsp.sentinel.dashboard.server=localhost:8080 -Dproject
 ==== 配置控制台信息
 
 .application.yml
-[source,yaml]
 ----
 spring:
   cloud:

spring-cloud-alibaba-docs/src/main/asciidoc-zh/spring-cloud-alibaba.adoc

@@ -32,3 +32,5 @@ include::schedulerx.adoc[]
 include::sms.adoc[]
 
 include::sidecar.adoc[]
+
+

spring-cloud-alibaba-docs/src/main/asciidoc/circuitbreaker-sentinel.adoc

@@ -0,0 +1,73 @@
+=== Circuit Breaker: Spring Cloud Circuit Breaker With Sentinel & Configuring Sentinel Circuit Breakers
+
+==== Default Configuration
+
+To provide a default configuration for all of your circuit breakers create a `Customizer` bean that is passed a
+`SentinelCircuitBreakerFactory` or `ReactiveSentinelCircuitBreakerFactory`.
+The `configureDefault` method can be used to provide a default configuration.
+
+====
+[source,java]
+----
+@Bean
+public Customizer<SentinelCircuitBreakerFactory> defaultCustomizer() {
+	return factory -> factory.configureDefault(id -> new SentinelConfigBuilder(id)
+			.build());
+}
+----
+====
+
+You can choose to provide default circuit breaking rules via `SentinelConfigBuilder#rules(rules)`.
+You can also choose to load circuit breaking rules later elsewhere using
+`DegradeRuleManager.loadRules(rules)` API of Sentinel, or via Sentinel dashboard.
+
+===== Reactive Example
+
+====
+[source,java]
+----
+@Bean
+public Customizer<ReactiveSentinelCircuitBreakerFactory> defaultCustomizer() {
+	return factory -> factory.configureDefault(id -> new SentinelConfigBuilder(id)
+			.build());
+}
+----
+====
+
+==== Specific Circuit Breaker Configuration
+
+Similarly to providing a default configuration, you can create a `Customizer` bean this is passed a
+`SentinelCircuitBreakerFactory`.
+
+====
+[source,java]
+----
+@Bean
+public Customizer<SentinelCircuitBreakerFactory> slowCustomizer() {
+	String slowId = "slow";
+	List<DegradeRule> rules = Collections.singletonList(
+		new DegradeRule(slowId).setGrade(RuleConstant.DEGRADE_GRADE_RT)
+			.setCount(100)
+			.setTimeWindow(10)
+		);
+	return factory -> factory.configure(builder -> builder.rules(rules), slowId);
+}
+----
+====
+
+===== Reactive Example
+
+====
+[source,java]
+----
+@Bean
+public Customizer<ReactiveSentinelCircuitBreakerFactory> customizer() {
+	List<DegradeRule> rules = Collections.singletonList(
+		new DegradeRule().setGrade(RuleConstant.DEGRADE_GRADE_RT)
+			.setCount(100)
+			.setTimeWindow(10)
+		);
+	return factory -> factory.configure(builder -> builder.rules(rules), "foo", "bar");
+}
+----
+====

spring-cloud-alibaba-docs/src/main/asciidoc/nacos-discovery.adoc

@@ -41,7 +41,7 @@ For more Nacos Server versions, you can download the latest version from https:/
 
 The following sample illustrates how to register a service to Nacos.
 
-* Configuration of pom.xml The following is a complete example of pom.xml:
+* Configuration of pom.xml The following is a complete example of pom.xml：
 
 .pom.xml
 [source,xml]

spring-cloud-alibaba-docs/src/main/asciidoc/rocketmq.adoc

@@ -114,7 +114,7 @@ All the message types in this code are provided by the `spring-messaging`module.
 
 **The lower layer of Spring Cloud Stream also implements various code abstractions based on the previous code.**
 
-=== How to use Spring Cloud Alibaba RocketMQ Binder ###
+=== How to use Spring Cloud Alibaba RocketMQ Binder
 
 For using the Spring Cloud Alibaba RocketMQ Binder, you just need to add it to your Spring Cloud Stream application, using the following Maven coordinates:
 
@@ -165,7 +165,7 @@ For example, `TAGS`, `DELAY`, `TRANSACTIONAL_ARG`, `KEYS`, `WAIT_STORE_MSG_OK`,
 MessageBuilder builder = MessageBuilder.withPayload(msg)
     .setHeader(RocketMQHeaders.TAGS, "binder")
     .setHeader(RocketMQHeaders.KEYS, "my-key")
-    .setHeader("DELAY", "1");
+    .setHeader(MessageConst.PROPERTY_DELAY_TIME_LEVEL, "1");
 Message message = builder.build();
 output().send(message);
 ```

spring-cloud-alibaba-docs/src/main/asciidoc/sentinel.adoc

@@ -257,7 +257,7 @@ To learn more about how dynamic data sources work in Sentinel, refer to https://
 
 === Support Zuul
 
-https://github.com/alibaba/Sentinel/wiki/%E7%BD%91%E5%85%B3%E9%99%90%E6%B5%81[参考 Sentinel 网关限流]
+Refer https://github.com/alibaba/Sentinel/wiki/API-Gateway-Flow-Control[API Gateway Flow Control]
 
 If you want to use Sentinel Starter with Zuul, you need to add the `spring-cloud-alibaba-sentinel-gateway` dependency, and you need to add the `spring-cloud-starter-netflix-zuul` dependency to let Zuul AutoConfiguration class in the gateway module takes effect:
 
@@ -280,7 +280,7 @@ If you want to use Sentinel Starter with Zuul, you need to add the `spring-cloud
 
 === Support Spring Cloud Gateway
 
-https://github.com/alibaba/Sentinel/wiki/%E7%BD%91%E5%85%B3%E9%99%90%E6%B5%81[参考 Sentinel 网关限流]
+Refer https://github.com/alibaba/Sentinel/wiki/API-Gateway-Flow-Control[API Gateway Flow Control]
 
 If you want to use Sentinel Starter with Spring Cloud Gateway, you need to add the `spring-cloud-alibaba-sentinel-gateway` dependency and add the `spring-cloud-starter-gateway` dependency to let Spring Cloud Gateway AutoConfiguration class in the module takes effect:
 
@@ -301,6 +301,8 @@ If you want to use Sentinel Starter with Spring Cloud Gateway, you need to add t
 </dependency>
 ```
 
+include::circuitbreaker-sentinel.adoc[]
+
 === Sentinel Endpoint
 
 Sentinel provides an Endpoint internally with a corresponding endpoint id of `sentinel`.