Hystrix整合boot

1.引入pom文件

<dependency>
    <groupId>com.netflix.hystrix</groupId>
    <artifactId>hystrix-core</artifactId>
    <version>1.5.12</version>
</dependency>
<dependency>
    <groupId>com.netflix.hystrix</groupId>
    <artifactId>hystrix-metrics-event-stream</artifactId>
    <version>1.5.12</version>
</dependency>
<dependency>
    <groupId>com.netflix.hystrix</groupId>
    <artifactId>hystrix-javanica</artifactId>
    <version>1.5.12</version>
</dependency>

2.Hystrix配置類

@Configuration
public class HystrixConfig {

    /**
     * 用來攔截HystrixCommandz註解
     * @return
     */
    @Bean
    public HystrixCommandAspect hystrixAspect(){
        return new HystrixCommandAspect();
    }

    /**
     * 用來像監控中心Dashboard發送stream信息
     * @return
     */
    @Bean
    public ServletRegistrationBean hystrixMetricsStreamServlet(){
        ServletRegistrationBean registration = new ServletRegistrationBean(new HystrixMetricsStreamServlet());
        registration.addUrlMappings("/hystrix.stream");
        return registration;
    }
3.使用HystrixCommand註解

@HystrixCommand(fallbackMethod = "onError",
        commandProperties = {
                @HystrixProperty(name = "execution.isolation.strategy", value = "THREAD"),
                @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "1000"),
                @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),
                @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "20")},
        threadPoolProperties = {
                @HystrixProperty(name = "coreSize", value = "5"),
                @HystrixProperty(name = "maximumSize", value = "5"),
                @HystrixProperty(name = "maxQueueSize", value = "10")
        })