1.配置静态缓存

#vim /usr/local/apache2/etc/httpd.conf
#开启mod_expires模块
LoadModule expires_module modules/mod_expires.so  #去掉注释
#添加：
<IfModule mod_expires.c>
    ExpiresActive on
    ExpiresByType image/gif "access plus 1 days"
    ExpiresByType image/jpeg "access plus 24 hours"
    ExpiresByType image/jpg "access plus 24 hours"
    ExpiresByType image/png "access plus 24 hours"
    ExpiresByType text/css "now plus 2 hours"
    ExpiresByType application/x-javascript "now plus 2 hours"
    ExpiresByType application/javascript "now plus 2 hours"
    ExpiresByType application/x-shockwave-flash "now plus 2 hours"
    ExpiresDefault "now plus 0 min"
</IfModule>

2.检查配置文件语法并重启apache

apachectl -t
apachectl restart

3.验证：

curl -x10.0.0.101:80 'http://10.0.0.101/a.jpg' -I