Apache优化

一个小型的商城单实例在跑，用户数量上来以后发现加载缓慢，检查阿里云发现80%的connection都not_established, 优化一下Apache配置试试。

先查看Apache的MPM工作模式

$ apachectl -V

Server version: Apache/2.4.6 (CentOS)
Server built:   Oct 19 2017 20:39:16
Server's Module Magic Number: 20120211:24
Server loaded:  APR 1.4.8, APR-UTIL 1.5.2
Compiled using: APR 1.4.8, APR-UTIL 1.5.2
Architecture:   64-bit
Server MPM:     prefork
threaded:     no
forked:     yes (variable process count)

先改一个1000试试

<IfModule mpm_prefork_module>
    StartServers             10
    MinSpareServers          10
    MaxSpareServers          50
    ServerLimit              1000
    MaxRequestWorkers        1000
    MaxConnectionsPerChild   0
</IfModule>