安装与设置WP Super Cache
在WordPress仪表盘插件栏搜索WP Super Cche，安装即可。

启用缓存功能 (推荐)
启用后，会出现提示：

Mod rewrite 模块可能未安装！

貌似 mod_rewrite 模块尚未安装。也许情况并不是这样，尤其是当您不使用 Apache 作为服务器程序的时候。请检查 mod_rewrite 模块是否被加载。这对于 Super Cache 的静态文件的调用是必需的。不过您可以使用 PHP 缓存模式或者传统模式运行本插件。
不用管这个提示，这是针对apache服务器的提示，nginx下面不用管它。

在nginx的配置文件里加入如下规则：

try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $uri $uri/ /index.php?$args ;

# WP Super Cache rules.
# # Designed to be included from a 'wordpress-ms-...' configuration file.
#
set $cache_uri $request_uri;
#
# # POST requests and urls with a query string should always go to PHP
if ($request_method = POST) {
 set $cache_uri 'null cache';
 }
#
if ($query_string != "") {
set $cache_uri 'null cache';
 }
#
# # Don't cache uris containing the following segments
if ($request_uri ~* "(/wp-admin/|/xmlrpc.php|/wp-(app|cron|login|register|mail).php|wp-.*.php|/feed/|index.php|wp-comments-popup.php|wp-links-opml.php|wp-locations.php|sitemap(_index)?.xml|[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {
 set $cache_uri 'null cache';
 }

# # Don't use the cache for logged in users or recent commenters
 if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+|wp-postpass|wordpress_logged_in") {
 set $cache_uri 'null cache';
 }
#
# # START MOBILE
# # Mobile browsers section to server them non-cached version. COMMENTED by default as most modern wordpress themes including twenty-eleven are responsive. Uncomment config lines in this section if you want to use a plugin like WP-Touch
 if ($http_x_wap_profile) {
 set $cache_uri 'null cache';
}
#
if ($http_profile) {
 set $cache_uri 'null cache';
}
#
if ($http_user_agent ~* (2.0\ MMP|240x320|400X240|AvantGo|BlackBerry|Blazer|Cellphone|Danger|DoCoMo|Elaine/3.0|EudoraWeb|Googlebot-Mobile|hiptop|IEMobile|KYOCERA/WX310K|LG/U990|MIDP-2.|MMEF20|MOT-V|NetFront|Newt|Nintendo\ Wii|Nitro|Nokia|Opera\ Mini|Palm|PlayStation\ Portable|portalmmm|Proxinet|ProxiNet|SHARP-TQ-GX10|SHG-i900|Small|SonyEricsson|Symbian\ OS|SymbianOS|TS21i-10|UP.Browser|UP.Link|webOS|Windows\ CE|WinWAP|YahooSeeker/M1A1-R2D2|iPhone|iPod|Android|BlackBerry9530|LG-TU915\ Obigo|LGE\ VX|webOS|Nokia5800)) {
 set $cache_uri 'null cache';
}
#
if ($http_user_agent ~* (w3c\ |w3c-|acs-|alav|alca|amoi|audi|avan|benq|bird|blac|blaz|brew|cell|cldc|cmd-|dang|doco|eric|hipt|htc_|inno|ipaq|ipod|jigs|kddi|keji|leno|lg-c|lg-d|lg-g|lge-|lg/u|maui|maxo|midp|mits|mmef|mobi|mot-|moto|mwbp|nec-|newt|noki|palm|pana|pant|phil|play|port|prox|qwap|sage|sams|sany|sch-|sec-|send|seri|sgh-|shar|sie-|siem|smal|smar|sony|sph-|symb|t-mo|teli|tim-|tosh|tsm-|upg1|upsi|vk-v|voda|wap-|wapa|wapi|wapp|wapr|webc|winw|winw|xda\ |xda-)) {
 set $cache_uri 'null cache';
}
# #END MOBILE
#
# # Use cached or actual file if they exists, otherwise pass request to WordPress
 location / {
 try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $uri $uri/ /index.php?$args ;
}

修改完使用service nginx reload，重载nginx配置。WP-Super-Cache高级设置的选项有几个必选的：

√ 启用缓存以便加快访问。 (推荐）
√ mod_rewrite 缓存模式。 (推荐）
√ 不要为已知用户缓存。 (推荐)
√ 缓存重建。当新缓存生成时调用缓存文件给匿名用户。 (推荐)