W3 Total Cache

据说比其他缓存插件WP Cache,WP Super Cache,cos-html-cache及Hyper Cache还要好。不知道是不是真的那么好。
W3 Total Cache的介绍:

• Increased visitor time on site
• Optimized progressive render (pages appear to load instantly)
• Reduced HTTP Transactions, DNS lookups and reduced document load time
• Bandwidth savings via Minify and HTTP compression of HTML, CSS, JavaScript and RSS feeds
• Increased web server concurrency and increased scale (easily sustain high traffic spikes)
• Transparent content delivery network (CDN) integration with Media Library, theme files and WordPress core
• Caching of pages / posts in memory or on disk
• Caching of (minified) CSS and JavaScript in memory, on disk or on CDN
• Caching of database objects in memory
• Caching of RSS (comments, page and site) feeds in memory or on disk
• Caching of search results pages (i.e. URIs with query string variables) in memory or on disk
• Minification of posts / pages and RSS feeds
• Minification (concatenation and white space removal) of inline, external or 3rd party JavaScript / CSS with automated updates
• Complete header management including Etags
• JavaScript embedding group and location management
• Import post attachments directly into the Media Library (and CDN)

一个插件就实现了本来几个插件的功能；
页面缓存,数据库缓存,压缩缓存CSS和JavaScript。CDN我是用不上了。

安装方式：

1. 卸载之前安装的WordPress缓存插件
2. 更改wp-content目录为777权限（临时性）
3. 上传并解压缩 W3 Total Cache 插件
4. 在 wp-config.php 文件中添加：define('WP_CACHE', true);
5. 激活插件，更改wp-content目录为755权限