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使用 redis 做限流

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Release： 2016-06-07 16:39:26
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背景 事情是这样来的，最近2天 tool.lu 的 uv 并没有大幅的增长，但是 pv 的涨幅却很大，造成服务器的 load 一度超过了 20，想必是被攻击，做过php-fpm的优化，收效甚微。故想到了限流 限流的使用场景 API的调用次数限制 防止频繁刷新 etc... 想法和实现 其

背景

事情是这样来的，最近2天 tool.lu 的 uv 并没有大幅的增长，但是 pv 的涨幅却很大，造成服务器的 load 一度超过了 20，想必是被攻击，做过php-fpm的优化，收效甚微。故想到了限流

限流的使用场景

  1. API的调用次数限制
  2. 防止频繁刷新
  3. etc...

想法和实现

其实我是参考了下面这篇文章的实现，至于为什么要这么做，我的考虑跟他文章中提到的是一致的，可以查看原文

Rate limiting with Redis

原文中提供了大段的文字说明，于是我根据他的说明，做了一幅图，仅供参考：

design.jpg

原文地址：使用 redis 做限流, 感谢原作者分享。

Related labels：
redis use background Limiting
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