From 6e7fd597647980a491f2a65606af9ad5800e5de2 Mon Sep 17 00:00:00 2001
From: Rikako Wu <496063163@qq.com>
Date: Fri, 21 Apr 2023 15:28:40 +0800
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+# Spring Cloud Circuit Breaker
+Spring Cloud Circuit Breaker项目包含Resilience4J实现和Spring Retry实现。
+## 配置Resilience4J Circuit Breakers
+关于resilience4J Circuit Breakers实现，拥有如下两个启动器，一个用于响应式项目，另一个用于非响应式项目：
+- `org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j`
+- `org.springframework.cloud:spring-cloud-starter-circuitbreaker-reactor-resilience4j`
+
+### 关闭自动装配
+可以通过设置`spring.cloud.circuitbreaker.resilience4j.enabled`为false来关闭Resilience4J的自动装配
+### 默认配置
+如果想要为所有的circuit breaker提供默认配置，可以创建一个`Customizer` bean对象，该bean对象接收一个`Resilience4JCircuitBreakerFactory`类型参数。configureDefault方法可以用于提供默认的配置：
+```java
+@Bean
+public Customizer<Resilience4JCircuitBreakerFactory> defaultCustomizer() {
+    return factory -> factory.configureDefault(id -> new Resilience4JConfigBuilder(id)
+            .timeLimiterConfig(TimeLimiterConfig.custom().timeoutDuration(Duration.ofSeconds(4)).build())
+            .circuitBreakerConfig(CircuitBreakerConfig.ofDefaults())
+            .build());
+}
+```
+### 自定义ExecutorService
+如果想要自定义执行circuit breaker的`ExecutorService`，可以通过Resilience4JCircuitBreakerFactor来指定。