add Spring Cloud CircuitBreaker Sentinel docs

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/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:
 

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

@@ -255,7 +255,7 @@ 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:
 
@@ -278,7 +278,7 @@ 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:
 
@@ -299,6 +299,8 @@ 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`.