For most Wordpress websites, the quickest and easiest way to get a major performance improvement is to install a caching plugin. There are many available through the Wordpress Plugin Directory, and you can install them directly within Wordpress. This article will give you instructions on how to install WP Fastest Cache.
Caching - what's that?
cache, noun [pr: kash] a place where things are hidden
About caching and why it works so well for your Wordpress website.
By default, every time a visitor accesses a page on your website, Wordpress executes php programs, comprised of tens or hundreds of individual php files, to build the requested page. These php programs take your content and your selected theme, along with any customisations that are performed by your plugins - also php programs, and run them to generate the page. Some of your content can also be generated by these plugins. This means that the server has to access hundreds or even thousands of files, and then run the php programs, every time a page is accessed.
For the vast majority of websites, because the content on each page changes rarely*, caching plugins can give a huge speedup by saving a copy of the fully-built page to a cache directory on the server when it is first built. Until the page changes again, or for a predefined period, this copy will instantly be returned in response to requests for this page, without it having to be built again. This avoids the thousands of files being loaded and the programs executed on the server.
* When it comes to websites, "rarely" can mean a long time, or very short period of time, depending the number of visitors to the website. A website that is updated as often as once per day and has 100 visitors a day, saves the page being built 99 out of 100 times. A website that has 100,000 visitors per minute, and is updated every minute, can save the page being generated 99,999 out of 100,000 times.
Installing WP Fastest Cache
- Login to your Wordpress Admin page, and choose Add New under the Plugins menu.
- Enter "cache" in the keyword box. Click the Install Now button for WP Fastest Cache.
- Wait while WP Fastest Cache is installed.
- Click the Activate button for WP Fastest Cache.
- When the plugin is activated, you'll see a confirmation message and will be on the Installed Plugins page. You'll also see WP Fastest Cache in the left-hand menu.
Configuring WP Fastest Cache.
- Click WP Fastest Cache in the left hand menu. You'll see the Options page for the plugin.
- Take note of the setting Preload. This setting is best applied when managing cache for a high traffic website, if your website is low traffic this setting will cause a greater overhead of CPU usage- so take into consideration which setting is appropriate for your website, our screenshot displays settings we've applied to a high traffic site, if your website is low traffic we recommend leaving Preload Disabled.
- Click New Post. The options panel for New Post will show. The default options are preferred, so click OK.
- Click Update Post. The options panel for Update Post will show. The default options are preferred, so click OK.
- Click Minify HTML, Minify Css, Combine Css, Combine Js, Gzip , Browser Caching and Disable Emojis. Click Submit.
 Some sites may have issues with Combine Css, Combine JS, or both. Check your site after enabling these options to ensure it still looks and works the same as it did previously.
 Gzip will require the gzip module for php enabled. This is done in cPanel under either MultiPHP INI Editor (enable zlib.output_compression) or Select PHP Version.
Speed Test Comparison
We ran a benchmark Google Pagespeed Insights test after installing a fresh copy of Wordpress. These were the results:
WP Fastest Cache was installed, and the options above selected. We loaded the page again in Pagespeed Insights, and these are the results:
Install a caching plugin for an instant speed improvement for your Wordpress Website. Serversaurus recommends WP Fastest Cache. In our evaluations, WP Fastest Cache gets the best speedup and is very easy to configure. In our testing, WP Fastest Cache improved the Google Page Insights score for a default Wordpress installation from 88 to 99; improved the Speed Index from 5.3s to 1.0s, an 82% reduction; and Time to First Byte (TTFB) from 1.71s to 0.05s, a 97% reduction.