When the visitors visit your site and require a bunch of information, including pictures, comments, Javascript, update the post, etc.. This dynamic loading takes a lot of time. That’s why you need a cache plugin. WordPress Cache plugin can generate a static image for your website, replaced by dynamic loading of data transfer. To install a cache plugin is the easiest way to enhance the loading speed of the website.
WordPress’s cache plugin is an essential plugin, you can reduce the pressure on the server, you can also allow access to the site faster. At present, Speak of WordPress best plugin about cache plugin, W3 Total and WP Super Cache is very popular, in addition, WP Fastest Cache is a very good WordPress cache plugin.
W3 Total Cache

W3 Total Cache is one of the most famous WordPress cache plugins. W3 Total Cache Integrated caching: CDN, Minify, Page, Object, Fragment, Database support. After installing this plugin, you can enjoy a one-stop service, do not need other cache plugins.
WP Super Cache
WP Super Cache has 1+ million users, is currently the most efficient and flexible WordPress static cache plugin. It makes the entire web page directly generate HTML files, so that Apache will not have to parse the PHP script, by using WP Super Cache, you can make your WordPress blog run faster significantly .
WP Fastest Cache

WP Fastest Cache creates static html files from your dynamic WordPress blog, reduce the pressure of the server, the visitors to visit the same page again, will directly read the cache file, improve the speed of browsing. Setup is so easy. You don’t need to modify the .htacces file. It will be modified automatically.