spring cloud gateway整合sentinel作网关限流

说明: sentinel可以作为各微服务的限流,也可以作为gateway网关的限流组件。 spring cloud gateway有限流功能,但此处用sentinel来作为替待。

说明:sentinel流控可以放在gateway网关端,也可以放在各微服务端。

1,以父工程为基础,创建子工程

2,添加pom依赖

     <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

2,添加配置项

server:
  port: 9092
spring:
  cloud:
    nacos:
      discovery:
        register-enabled: false
        server-addr: localhost:8848
        namespace: c22e5019-0bee-43b1-b80b-fc0b9d847501
    sentinel:
      transport:
        dashboard: localhost:8080
        port: 8719
      scg:
        fallback:
          mode: response
          response-status: 455
          response-body: error!
    gateway:
      routes:
        - id: demo_route
          uri: lb://demo
          predicates:
            - Path=/demo/**
        - id: demo2_test
          uri: lb://demo2
          predicates:
            - Path=/user/**
  application:
    name: gateway-sentinel

scg.fallback为sentinel限流后的响应配置

3,启动类

@SpringBootApplication
@EnableDiscoveryClient
public class GatewaySentinelApplication {
    public static void main(String[] args) {
        
        SpringApplication.run(GatewaySentinelApplication.class, args);
    }
}

4,启动后,在sentinel控制台可以看到 gateway-sentinel 应用,可以通过控制台设置流控规则。

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转载自www.cnblogs.com/dongbo/p/12225249.html