Speedy performance of any blog is very important for sales, user subscriptions, search engine ranking and others. Performance optimization plays an important role in the improvement of Pagerank as well.
WordPress pages can be slow because of the large number of files and database calls the system must process while the visitor waits to see it. By saving these dynamic pages as static HTML after they are viewed, subsequent page views are served much faster.
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Fortunately, adding caching to WordPress is as easy as adding a couple files to your server. Here are the 10 best WordPress caching plugins you can use to make your Web site more responsive and profitable.
WP-Cache is an extremely efficient WordPress page caching system to make you site much faster and responsive. It works by caching Worpress pages and storing them in a static file for serving future requests directly from the file rather than loading and compiling the whole PHP code and the building the page from the database. WP-Cache allows to serve hundred of times more pages per second, and to reduce the response time from several tenths of seconds to less than a millisecond.
2. WP Super Cache
This plugin generates static html files from your dynamic WordPress blog. After a html file is generated your webserver will serve that file instead of processing the comparatively heavier and more expensive WordPress PHP scripts.
3. DB Cache
The fastest cache engine for WordPress, that produces cache of database queries with easy configuration. This plugin caches every database query with given lifetime. It is much faster than other html caching plugins and uses less disk space for caching.
4. WP Widget Cache
Cache the output of your blog widgets. Usually it will significantly reduce the SQL queries to your database and speed up your site.
5. Hyper Cache
Hyper Cache is flexible and easy to configure cache system for WordPress. It’s aim is to work on any installation. Hyper Cache is a new cache system for WordPress, specifically written for people which have their blogs on low resources hosting provider (cpu and mysql). It works even with hosting based on Microsoft IIS (just tuning the configuration). It has three invalidation method: all the cache, single post based and nothing but with control on home and archive pages invalidation.
6. DB Cache Reloaded
The fastest cache engine for WordPress, that produces cache of database queries with easy configuration – now with bugs fixed. This plugin caches every database query with given lifetime. It is much faster than other html caching plugins and uses less disk space for caching.
7. 1 Blog Cacher
1 Blog Cacher is a WordPress plugin that caches your pages in order to increase the response speed and minimize the server load.
8. W3 Total Cache
Easily optimize the speed and user experience of your site with caching: browser, page, object, database, minify and content delivery network support. The fastest and most complete WordPress performance optimization plugin. Trusted by many popular sites like: mashable.com, smashingmagazine.com and others.
W3 Total Cache improves the user experience of your site by improving your server performance, caching every aspect of your site, reducing the download times and providing transparent content delivery network (CDN) integration.
9. Quick Cache
If you care about the speed of your site, Quick Cache is one of those plugins that you absolutely MUST have installed. Quick Cache takes a real-time snapshot ( building a cache ) of every Page, Post, Category, Link, etc. These snapshots are then stored ( cached ) intuitively, so they can be referenced later, in order to save all of that processing time that has been dragging your site down and costing you money.
Batcache uses Memcached to store and serve rendered pages. It’s not as fast as Donncha’s WP-Super-Cache but it can be used where file-based caching is not practical or not desired.