闲话少说:
总共分6步:
(1)添加hystrix依赖以及监控的依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
<version>1.4.4.RELEASE</version>
</dependency> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-actuator -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<version>2.0.3.RELEASE</version>
</dependency> <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-hystrix-dashboard -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
<version>1.4.3.RELEASE</version>
</dependency>
2、添加注解:
3、如果是springboot2.0的话需要添加hystrix.stream的访问路径:
加载application中即可:
@Bean
public ServletRegistrationBean getServlet() {
HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
registrationBean.setLoadOnStartup(1);
registrationBean.addUrlMappings("/hystrix.stream");
registrationBean.setName("HystrixMetricsStreamServlet");
return registrationBean;
}
4、在配置文件中 添加配置 属性
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 10000(访问超时配置,默认是1000ms)
execution:
timeout:
enabled: false
circuitBreaker:
requestVolumeThreshold: 1(断路器状态更改,默认是一个借口有20个请求失败,现在改为1个请求失败即开启断路器)
5、添加@HystrixCommand
直接在有服务调用的地方加上即可,fallback可以不加
6、查看监控界面:需要先访问,然后看下有没有数据,然后进入监控