sprigCloud使用hystrix技术服务降级

1. pom中添加依赖

   1. <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-hystrix</artifactId>
      <version>1.4.6.RELEASE</version>
      </dependency>

2. 在配置文件中添加hystrix配置

1. 　　

   feign.hystrix.enabled=true
   
   hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=6000

3. 在service-edu的client包里面创建熔断器的实现类

1. @Component
   public class VodFileDegradeFeignClient implements VodClient{
       @Override
       public R removeALYVideo(String id) {
           return R.error().message("删除视频出差错了");
       }
   
       @Override
       public R deleteBatch(List<String> videoIdList) {
           return R.error().message("删除多个视频出差错了");
       }
   }

4. 修改VodClient接口的注解

   1. 　　

      @Component
      @FeignClient(name = "service-vod1",fallback = VodFileDegradeFeignClient.class)
      public interface VodClient {
          @DeleteMapping("/vod/video/delete/{id}")
          public R removeALYVideo(@PathVariable("id") String id);
      
          @DeleteMapping("/vod/video/delete-batch")
          public R deleteBatch(@RequestParam("videoIdList") List<String> videoIdList);
      
      
      }