<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-hystrix</artifactId><version>1.4.7.RELEASE</version>
</dependency>
<dependency><groupId>com.netflix.hystrix</groupId><artifactId>hystrix-javanica</artifactId>
</dependency>

feign: hystrix: enabled: truehystrix:command:default:execution:timeout:enabled: trueisolation:strategy: THREADthread:timeoutInMilliseconds: 8000interruptOnTimeout: trueinterruptOnCancel: truefallback:enabled: trueisolation:semaphore:maxConcurrentRequests: 2

@HystrixCommand(commandKey = "circuitBreakerCommand",threadPoolKey = "circuitBreakerPool",fallbackMethod = "circuitBreakerFallbackMethod",commandProperties = {@HystrixProperty(name = "circuitBreaker.enabled", value = "true"),@HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "2"),@HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "10"),@HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "5000")}, threadPoolProperties = {@HystrixProperty(name = "coreSize", value = "5") })@GetMapping("/circuitBreakerHello/{id}")public String circuitBreakerHello(@PathVariable("id") int id) {if(id==2){throw new RuntimeException("exception");}return "sucessful execution" ;}public String circuitBreakerFallbackMethod(int id) {return "param "+id+" is wrong. circuitBreaker has been valid";
}

@SpringBootApplication(exclude={DataSourceAutoConfiguration.class})
@EnableDiscoveryClient
@EnableFeignClients
@EnableHystrix
@MapperScan("com.sboot.dao")
public class ConsulConsumerApplication {public static void main(String[] args) {SpringApplication.run(ConsulConsumerApplication.class, args);}
}