Java中基于Nacos实现Sentinel规则持久化详解

   <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!--sentinel 核心环境 依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>
        <!-- Sentinel⽀持采⽤ Nacos 作为规则配置数据源，引⼊该适配依赖 -->
        <dependency>
            <groupId>com.alibaba.csp</groupId>
            <artifactId>sentinel-datasource-nacos</artifactId>
        </dependency>

server:
  port: 8100
spring:
  profiles:
    active: dev
  application:
    name: nacos-sentinel-8100
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
        # namespace + group 隔离环境
        namespace: 86614fa3-f528-44e7-95e5-265cc51feb41
        group: DEFAULT_GROUP
    sentinel:
      transport:
        dashboard: 127.0.0.1:8080 # sentinel dashboard/console地址
        port: 8100 # sentinel会在该端⼝启动http server，那么这样 的话，控制台定义的⼀些限流等规则才能发送传递过来，
                  #如果 8100 端⼝被占⽤，那么会依次+1
      datasource:
        # 此处的flow为⾃定义数据源名
        flow: # 流控规则
          nacos:
            server-addr: ${spring.cloud.nacos.discovery.server-addr}
            # namespace + data-id + group 定位资源配置文件
            namespace: 86614fa3-f528-44e7-95e5-265cc51feb41
            data-id: ${spring.application.name}-flow-rules
            groupId: DEFAULT_GROUP
            data-type: json
            rule-type: flow # 类型来⾃RuleType类
        degrade:
          nacos:
            server-addr: ${spring.cloud.nacos.discovery.server-addr}
            namespace: 86614fa3-f528-44e7-95e5-265cc51feb41
            data-id: ${spring.application.name}-degrade-rules
            groupId: DEFAULT_GROUP
            data-type: json
            rule-type: degrade # 类型来⾃RuleType类
management:
  endpoints:
    web:
      exposure:
        include: "*"
  # 暴露健康接口的细节
  endpoint:
    health:
      show-details: always

@RestController
@RequestMapping("/api")
public class Test1Controller {
    @GetMapping("/test1")
    public String test1(String str) {
        return str +"test1 : GetMapping  " + LocalDateTime.now();
    }
    @GetMapping("/test2")
    public String test2(String str) {
        int i = 1/0;
        return str +"test2 : GetMapping  " + LocalDateTime.now();
    }
    @RequestMapping("/test3")
    public String test3(String str) {
        int i = 1/0;
        return str +"test3 : GetMapping  " + LocalDateTime.now();
    }
}