在centos 6 上yum 安装的httpd，默认没有开启压缩传输和图片过期，严重影响网页加载速度。而这两项功能在前端测试工具pagespeed和yslow里都是最高优先级的网页优化选项，但凡web服务器都需要。

主要针对的是文本、js、css，图片等静态内容，除了图片有较少的压缩价值之外，其余的都可以压缩传输，进行浏览器缓存。

创建一个文件/etc/httpd/conf.d/tunning.conf 可以实现上述功能，是对apache默认行为的有效补充。

             
                     # Insert filter                SetOutputFilter DEFLATE                # Netscape 4.x has same problems...                BrowserMatch ^Mozilla/4 gzip-only-text/html                # Netscape 4.06-4.08 have some more problems                BrowserMatch ^Mozilla/4\.0[678] no-gzip                # MSIE masquerades as Netscape, but it is fine                # BrowserMatch \bMSIE !no-gzip !gzip-only-text/html                # NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48                # the above regex won't work. You can use the following                # workaround to get the desired effect:                BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html                # Don't compress images and other                SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary                SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary                SetEnvIfNoCase Request_URI .(?:pdf|doc)$ no-gzip dont-vary                AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css                AddOutputFilterByType DEFLATE application/x-javascript                # Make sure proxies don't deliver the wrong content                #Header append Vary User-Agent env=!dont-vary          
    
    
             ExpiresActive On        ExpiresByType image/* "access plus 1 month"        ExpiresByType text/css "access plus 1 month"        ExpiresByType text/javascript  "access plus 1 month"        ExpiresByType application/x-javascript "access plus 1 month"
    
    
       Header unset Server  Header unset X-Powered-By
    

另外，作为web服务器，apache不常用的模块，完全可以精简掉。

#LoadModule ldap_module modules/mod_ldap.so#LoadModule authnz_ldap_module modules/mod_authnz_ldap.so#LoadModule dav_module modules/mod_dav.so#LoadModule dav_fs_module modules/mod_dav_fs.so#LoadModule proxy_module modules/mod_proxy.so#LoadModule proxy_balancer_module modules/mod_proxy_balancer.so#LoadModule proxy_ftp_module modules/mod_proxy_ftp.so#LoadModule proxy_http_module modules/mod_proxy_http.so#LoadModule proxy_ajp_module modules/mod_proxy_ajp.so#LoadModule proxy_connect_module modules/mod_proxy_connect.so