极分享：高质分享+专业互助=没有难做的软件+没有不得已的加班



极分享：高质分享+专业互助=没有难做的软件+没有不得已的加班

当一款社交App发布之初，用户访问量比较小，使用一台服务器就能够支撑全部的访问压力和数据存储需求，但是互联网应用具有病毒式的传播特点。一款App很可能会面临一夜爆红的现象，访问量和数据量在短时间内呈现爆发式增长，这时候会面临的局面是每天上亿PV、数百万新增用户和活跃用户、流量飙升至每秒数百兆。这些对于一个只部署了简单后端架构的应用来讲是无法支撑的，会直接导致服务器响应缓慢甚至超时，以及在高峰期时服务呈现瘫痪状态，使得后端的服务完全无法使用，用户体验急剧下降。本文将会通过一个真实的案例来分享一个社交应用如何构建一个具备高伸缩性的后端系统。

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