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