zuul进行rate limit

梦里梦外; 2022-02-23 06:22 170阅读 0赞

## maven ##

<dependency>
                <groupId>com.marcosbarbero.cloud</groupId>
                <artifactId>spring-cloud-zuul-ratelimit</artifactId>
                <version>1.0.7.RELEASE</version>
            </dependency>

## 配置 ##

product:
      ribbon:
        listOfServers: 192.168.99.100:8080
    zuul:
      routes:
        product:
          path: /product/**
          stripPrefix: false
      ratelimit:
        enabled: true #default false
        behind-proxy: true #default false
        policies:
          product:
            limit: 10
            refresh-interval: 120 #60 default value (in seconds)
            type: #optional
              - user
              - origin
              - url
    spring:
      redis:
        timeout: 10
        database: 0
        host: 192.168.99.100
        port: 6379
        pool:
          max-active: 8
          max-idle: 8
          max-wait: -1
          min-idle: 0

## filterOrder ##

类似spring-core-4.3.4.RELEASE-sources.jar!/org/springframework/core/Ordered.java

/**
         * Useful constant for the highest precedence value.
         * @see java.lang.Integer#MIN_VALUE
         */
        int HIGHEST_PRECEDENCE = Integer.MIN_VALUE;
    
        /**
         * Useful constant for the lowest precedence value.
         * @see java.lang.Integer#MAX_VALUE
         */
        int LOWEST_PRECEDENCE = Integer.MAX_VALUE;

默认越小优先级越高,排查负数的情况下,0优先级最高

> RateLimitFilter  
> com/marcosbarbero/zuul/filters/pre/ratelimit/RateLimitFilter.java

它的order为-1,表示更先执行

## 测试 ##

wrk -t12 -c100 -d10s -T30s  --latency http://localhost:8080/product

限流结果：

workspace curl -i http://localhost:8080/product\?debug=true
    HTTP/1.1 429
    X-Application-Context: application
    X-RateLimit-Limit: 10
    X-RateLimit-Remaining: 0
    X-RateLimit-Reset: 13000
    Content-Length: 0
    Date: Sun, 09 Apr 2017 06:44:02 GMT

## doc ##

*  [spring-cloud-starter-zuul-ratelimit][]
 *  [高并发系统限流中的漏桶算法和令牌桶算法，通过流量整形和速率限制提升稳定性][Link 1]

[spring-cloud-starter-zuul-ratelimit]: https://github.com/marcosbarbero/spring-cloud-starter-zuul-ratelimit
[Link 1]: https://mp.weixin.qq.com/s?src=3&timestamp=1491721523&ver=1&signature=SIYlwhMqT5UIHMIoy61j2eAZJnfGrB8pAjC7T5OgYtKRSmgb3k