CentOS服务器给WordPress安装Varnish加速

Varnish是一款高性能的开源HTTP加速器，下面给大家介绍如何在CentOS上安装Varnish来给你的WordPress博客加速。
1，安装Varnsih
使用SSH登录你的VPS，执行下面的命令来安装Varnish：
yum install varnish
然后我们启动Varnish：
/etc/init.d/varnish start
设置为开机启动：
chkconfig –level 345 varnish on
2，配置Varnish
打开default.vcl：
nano /etc/varnish/default.vcl
确认默认的default.vcl和下面的代码相匹配：
# Back-Endbackend default {.host = "127.0.0.1";.port = "80";.connect_timeout = 60s;.first_byte_timeout = 10s;.between_bytes_timeout = 10s;} # Customsub vcl_recv {remove req.http.X-Forwarded-For;set req.http.X-Forwarded-For = client.ip; if (req.url ~ "^/wp-(login|admin)") {return (pipe);} if (req.http.Cookie ~"(wp-postpass|wordpress_logged_in|comment_author_)") {return (pipe);} if (req.request == "OST") {return (pass);} if (req.http.Cache-Control ~ "no-cache") {return (pass);} if (req.http.Authorization) {return (pass);} if (req.url ~ ".(jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|pd f|txt|tar|wav|bmp|rtf|js|flv|swf|htm|html)$") {unset req.http.Cookie;unset req.http.Accept-Encoding;unset req.http.Vary;return (lookup);} if (req.http.Accept-Encoding) {if (req.url ~ ".(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {remove req.http.Accept-Encoding;} elsif (req.http.Accept-Encoding ~ "gzip") {set req.http.Accept-Encoding = "gzip";} elsif (req.http.Accept-Encoding ~ "deflate") {set req.http.Accept-Encoding = "deflate";} else {remove req.http.Accept-Encoding;}} if (req.backend.healthy) {set req.grace = 30s;} else {set req.grace = 1h;} unset req.http.Cookie;unset req.http.Vary;return (lookup);} sub vcl_fetch {set beresp.grace = 1h;unset beresp.http.set-cookie;if (req.url ~ ".(jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|pd f|txt|tar|wav|bmp|rtf|js|flv|swf|htm|html)$") {set beresp.ttl = 24h;} else {set beresp.ttl = 5m;}return (deliver);} sub vcl_deliver {if(obj.hits > 0) {set resp.http.X-Cache = "HIT";} else {set resp.http.X-Cache = "MISS";}set resp.http.Cache-Control = "private";set resp.http.Pragma = "private";remove resp.http.X-Varnish;remove resp.http.Via;remove resp.http.Age;remove resp.http.Server;remove resp.http.X-Powered-By;} sub vcl_pipe {set bereq.http.connection = "close";}
重启Varnish使其生效：
/etc/init.d/varnish restart