Hyper Cache vs. Super Cache
Hyper Cache and WP Super Cache are two plug-ins designed to increase the performance of the WordPress blog management system by reducing the number of queries to the back-end database. If you share a Web hosting server with other customers who can potentially reduce your website's speed or want to make sure that your website isn't taken offline by a sudden traffic increase, one of these plug-ins may provide the performance boost you need.
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Purpose
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WordPress is a database-driven blog management engine; each time a visitor requests to view a post, WordPress queries the SQL database running on your server to retrieve information such as the body text, author's name and reader comments. A single post may be the result of up to 200 database queries. A caching plug-in saves posts as plain HTML pages. When a reader requests to view a post, WordPress serves the plain HTML page instead of querying the database. To conserve storage space and ensure that readers don't see old content, cached HTML pages are periodically deleted and re-created when needed.
Hyper Cache
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Hyper Cache supports mobile devices when used in conjunction with the wp-pda plug-in; it also supports both standard and gzip-compressed images. With Hyper Cache, you can set the number of minutes that the plug-in retains cached pages before deleting and re-creating them. In addition, Hyper Cache automatically detects when you modify a post. It then re-caches the post along with all pages on which it appears, including the blog's home page and category archives. In a 2010 benchmark test, tech website Tutorial9.net recorded an 837 percent performance increase with Hyper Cache compared to a default WordPress installation without a caching plug-in.
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WP Super Cache
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WP Super Cache works by changing the .htaccess file on your Web server to automatically redirect requests for posts to their cached versions. This reduces server load by eliminating the need to initialize the PHP engine. WP Super Cache can also use PHP caching on servers that don't support .htaccess modifications. In its 2010 benchmark test, Tutorial9.net found that WP Super Cache produced a performance increase of 747 percent.
Other Caching Plug-ins
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Several other WordPress plug-ins use caching to improve performance. WP Widget Cache caches only the widgets running in your blog's sidebar. DB Cache caches the results of database queries rather than caching posts. W3 Total Cache includes a variety of caching options geared toward experienced WordPress administrators. You can find all of these plug-ins using the search field in the "Plugins" section of your WordPress website.
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