分布式限流之Nginx+Lua实现

妖狐艹你老母 2023-09-23 20:12 119阅读 0赞

**【转载请注明出处】：[https://www.jianshu.com/p/cae825afaf3f][https_www.jianshu.com_p_cae825afaf3f]**ui

Lua 代码：lua

local locks = require "resty.lock"
    
    local function acquire()
        local lock =locks:new("locks")
        local elapsed, err =lock:lock("limit_key") --互斥锁
        local limit_counter =ngx.shared.limit_counter --计数器
    
        local key = "ip:" ..os.time()
        local limit = 5 --限流大小
        local current =limit_counter:get(key)
    
        if current ~= nil and current + 1> limit then --若是超出限流大小
           lock:unlock()
           return 0
        end
        if current == nil then
           limit_counter:set(key, 1, 1) --第一次须要设置过时时间，设置key的值为1，过时时间为1秒
        else
            limit_counter:incr(key, 1) --第二次开始加1便可
        end
        lock:unlock()
        return 1
    end
    ngx.print(acquire())

Nginxspa

http {
    
        ……
        lua_shared_dict locks 10m;
        lua_shared_dict limit_counter 10m;
    
    }

**【转载请注明出处】： [https://www.jianshu.com/p/cae825afaf3f][https_www.jianshu.com_p_cae825afaf3f]**rest

![2e21860672b8145043db013de949aa37.gif][]

*  1. [用nginx实现分布式限流][nginx]
 *  2. [Redis+Lua实现分布式限流器][Redis_Lua]
 *  3. [分布式接口限流实现][Link 1]
 *  4. [Redis实现的分布式锁和分布式限流][Redis]
 *  5. [分布式限流][Link 2]
 *  6. [Springboot分布式限流实践][Springboot]
 *  7. [分布式服务限流][Link 3]
 *  8. [分布式限流方法][Link 4]
 *  9. [分布式系统限流算法分析与实现][Link 5]
 *  10. [Sentinel整合Dubbo限流实战(分布式限流)][Sentinel_Dubbo]
 *  [更多相关文章...][...]
 *  • [Spring声明式事务管理（基于XML方式实现）][Spring_XML] \- [Spring教程][Spring]
 *  • [Redis发布订阅模式][Redis 1] \- [Redis教程][Redis 2]
 *  • [再有人问你分布式事务，把这篇扔给他][Link 6]
 *  • [常用的分布式事务解决方案][Link 7]

来源：[分布式限流之Nginx+Lua实现 - JavaShuo][Nginx_Lua_ - JavaShuo]

[https_www.jianshu.com_p_cae825afaf3f]: http://www.javashuo.com/link?url=https://www.jianshu.com/p/cae825afaf3f
[2e21860672b8145043db013de949aa37.gif]: https://img-blog.csdnimg.cn/img_convert/2e21860672b8145043db013de949aa37.gif
[nginx]: http://www.javashuo.com/article/p-sxskbldg-dt.html
[Redis_Lua]: http://www.javashuo.com/article/p-rflbiaqt-dh.html
[Link 1]: http://www.javashuo.com/article/p-uuxdjmnb-vd.html
[Redis]: http://www.javashuo.com/article/p-cmevrzja-dg.html
[Link 2]: http://www.javashuo.com/article/p-yxiezbng-bq.html
[Springboot]: http://www.javashuo.com/article/p-ajkjvuaz-oz.html
[Link 3]: http://www.javashuo.com/article/p-mykjumlq-on.html
[Link 4]: http://www.javashuo.com/article/p-mypjlupg-on.html
[Link 5]: http://www.javashuo.com/article/p-kzgeufmk-oa.html
[Sentinel_Dubbo]: http://www.javashuo.com/article/p-wpousjgg-ex.html
[...]: http://www.javashuo.com/relative/p-rspkunhn-gg.html
[Spring_XML]: http://www.voidme.com/spring/spring-transaction-management-by-xml
[Spring]: http://www.voidme.com/spring
[Redis 1]: http://www.voidme.com/redis/redis-publish-and-subscribe
[Redis 2]: http://www.voidme.com/redis
[Link 6]: http://www.voidme.com/content/distributed-transaction-bsx
[Link 7]: http://www.voidme.com/content/commonly-used-distributed-transaction-solutions-bsx
[Nginx_Lua_ - JavaShuo]: http://www.javashuo.com/article/p-rspkunhn-gg.html