feign集成sentinel和resilience4j使用

集成sentinel

文档地址 Sentinel · alibaba/spring-cloud-alibaba Wiki (github.com)

1. 添加依赖

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>

2. 添加配置

   feign.sentinel.enabled=true

3. 添加fallback

@FeignClient(name = "service-provider", fallback = EchoServiceFallback.class, configuration = FeignConfiguration.class)
public interface EchoService {
    @RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
    String echo(@PathVariable("str") String str);
}

class FeignConfiguration {
    @Bean
    public EchoServiceFallback echoServiceFallback() {
        return new EchoServiceFallback();
    }
}

class EchoServiceFallback implements EchoService {
    @Override
    public String echo(@PathVariable("str") String str) {
        return "echo fallback";
    }
}

集成resilience4j

文档地址 Spring Cloud Circuit Breaker

Getting Started (readme.io)

1. 非响应式

<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-circuitbreaker-resilience4j</artifactId>
</dependency>

2. 响应式

<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>

         3. 配置
         4. 见上面