编译安装好apache httpd以后，可以继续添加扩展

mod_expires 用于发送header，设置静态文件的过期时间

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

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