SpringCloud Alibaba微服务实战(五) - Sentinel实现限流熔断

什么是Sentinel？

请查看文章：SpringCloud Alibaba微服务实战(一) - 基础环境搭建

构建服务消费者cloud-sentinel进行服务调用

服务创建请查看文章：SpringCloud Alibaba微服务实战(二) - Nacos服务注册与restTemplate消费
1.在父项目中创建子module项目名字为cloud-sentinel，在pom中引入nacos服务注册依赖

 <!--Spring web-->
 <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <!--SpringCloud Alibaba nacos-->
  <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
  </dependency>
  <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-openfeign</artifactId>
  </dependency>
  <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
  </dependency>

完整服务消费者cloud-sentinel的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>cloud-alibaba</artifactId>
        <groupId>com.zsy.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <artifactId>cloud-sentinel</artifactId>
    <dependencies>
        <!--Spring web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--SpringCloud