SpringCloud - Hystrix-Dashboard

前言

🏃🏃🏃

本次分享 SpringCloud - Hystrix-Dashboard Hystrix仪表盘

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简介

Hystrix-dashboard 是一款针对 Hystrix 进行实时监控的可视化工具，主要用来实时监控Hystrix的各项指标信息。通过Hystrix Dashboard反馈的实时信息，可以帮助我们快速发现系统中存在的问题。

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快速开始

生产者-provider

1. Maven依赖

   <!--feign-->
   <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-starter-openfeign</artifactId>
   </dependency>

2. application.yml配置

   # 开启feign的熔断保护
   feign:
       hystrix:
           enabled: true 

3. 编码

   1. feignClient

      @FeignClient(value = ServerConstants.SERVICE_NAME, fallback = TestFallback.class)
      public interface ITestProviderService extends ITestControllerAPI {
      
          @Override
          @RequestMapping(value = "/test/inner/test", method = RequestMethod.GET)
          String test();
      
      }

   2. fallback

      @Component
      public class TestFallback implements ITestProviderService {
          @Override
          public String test() {
              return "test ----- fallback!";
          }
      }

   3. feignClient 实现类

      @RestController
      @RequestMapping(value = "/test/inner")
      public class TestProviderController implements ITestControllerAPI {
          @Override
          @GetMapping(value = "test")
          public String test() {
              return "test ----- ok!";
          }
      }

消费者-consumer

1. Maven依赖

   <!-- hystrix -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

2. application.yml配置

   # 开启feign的熔断保护
   feign:
       hystrix:
           enabled: true

3. 编码

   1. 调用 feignClient

      @RestController
      @RequestMapping(value = "/demo")
      public class DemoController {
          
          @Autowired
          private ITestProviderService testProviderService;
          
          @GetMapping(value = "test")
          public String test() {
              String result = testProviderService.test();
              return result;
          }
      
      }

启动验证

1. 启动 生产者-provider

2. 启动 消费者-consumer

   • 消费者调用生产者
     浏览器访问：http://127.0.0.1:1123/demo/test

   • 正常返回值 - OK！

     

3. 访问 Hystrix-Dashboard

   浏览器访问 http://127.0.0.1:1123/hystrix

   

   输入框中输入 http://127.0.0.1:1123/hystrix.stream

   

4. 关闭 生产者-provider

   • 消费者调用生产者
     浏览器访问：http://127.0.0.1:1123/demo/test

   • 异常返回值 - fallback!

     

5. 观察 Hystrix-Dashboard

   • 断路器熔断状态 - open

     

结束语

• 以上就是 Hystrix-Dashboard 的示例。

• Hystrix-Dashboard 指标参数说明

  

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✔ END

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