springcloud 网关限流策略实现

依赖

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

网关中加入代码

package com.chenhao.gateway.config;

import org.springframework.cloud.gateway.filter.ratelimit.KeyResolver;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import reactor.core.publisher.Mono;

/**
 * 限流规则配置类
 */
@Configuration
public class KeyResolverConfiguration {
    //key-resolver: "#{@ipKeyResolver}"
    @Bean
    public KeyResolver ipKeyResolver() {
        return exchange -> Mono.just(exchange.getRequest().getRemoteAddress().getAddress().getHostAddress() + "/" + exchange.getRequest().getRemoteAddress().getHostName());
    }
}

网关配置

关注配置点：

     redis-rate-limiter.replenishRate: 3 # 令牌桶每秒填充速率
     redis-rate-limiter.burstCapacity: 3 # 令牌桶总容量
     key-resolver: "#{@ipKeyResolver}" # 使用 SpEL 表达式按名称引用 bean

所有配置点

spring:
  redis:
    database: 0
    host: 192.168.8.51
    port: 6379
    password: 
  cloud:
    gateway:
      discovery:
        locator:
          lowerCaseServiceId: true
          enabled: true
      routes:
        # 开放接口服务
        - id: dcdzsoft-openapi
          uri: lb://dcdzsoft-openapi
          predicates:
            - Path=/openapi/**
          filters:
            # 签名验签处理
            - CacheRequestFilter
            - VerifyOpenApiFilter
            - StripPrefix=1
            - name: RequestRateLimiter
              args:
                redis-rate-limiter.replenishRate: 3 # 令牌桶每秒填充速率
                redis-rate-limiter.burstCapacity: 3 # 令牌桶总容量
                key-resolver: "#{@ipKeyResolver}" # 使用 SpEL 表达式按名称引用 bean