mod_expires 用于发送header，设置静态文件的过期时间
代码如下:

cd httpd-2.2.19/modules/metadata
sudo /usr/local/apache2/bin/apxs -i -a -c mod_expires.c
sudo vi /usr/local/apache2/conf/httpd.conf
ExpiresActive On
FileEtag none

mod_deflate 用于开启gzip压缩
代码如下:

cd httpd-2.2.19/modules/filters
sudo /usr/local/apache2/bin/apxs -i -a -c mod_deflate.c
sudo vi /usr/local/apache2/conf/httpd.conf
SetOutputFilter DEFLATE

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