Spring Hystrix熔断报警原理图例解析

　　　　　<!--springboot整合redis-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>

spring:
 application:
  name: order-service
 redis:
  database: 0
  host: 127.0.0.1 
  port: 6379
　 timeout: 2000

//注意：方法名称一定要与api方法一致
  private Object saveOrderFail(Integer userId,Integer productId){
    String saveOrderKey = "save-order";
    String sendValue = (String) redisTemplate.opsForValue().get(saveOrderKey);
    new Thread( () ->{
      if (StringUtils.isBlank(sendValue)){
        //发送一个http请求，请求短信服务

        redisTemplate.opsForValue().set(saveOrderKey,"save-order-fail",20, TimeUnit.SECONDS);
      } 
    }).start();
    Map<String, Object> msg= new HashMap<>();
    msg.put("code",-1);
    msg.put("msg","抢购人数太多,请稍后再试");
    return msg;
  }