This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Cache Master


Cache Master is an extremely lightweight, high-performance cache plugin that speeds up your WordPress sites on the fly. The core of Cache Master is driven by Shieldon Simple Cache, a PSR-16 simple cache library.

Open sourced on GitHub:

First release date: October, 1, 2020


  • Extremely lightweight and high-performance.
  • Support up to 10 cache drivers such as File, Redis, Memcache, Memcached, APC, APCu, WinCache, MySQL, SQLite, and MongoDB.
  • Provide detailed cache statistics, easy to manage.
  • Compatible with the WooCommerce plugin.
  • And more…


Before you install and use this plugin, please read the following notices carefully:

  • Logged-in users will not trigger the caching process.
  • A debug message will be appended to the end of the page’s source code: <!-- This page is cached by the Cache Master plugin. //-->. This is intended for debugging purposes only, confirming that the page is being cached. This message can be disabled in the Settings page.

If you encounter issues with your website when using Cache Master, please report the problem on GitHub and list all plugins installed on your website. I’ll investigate the problem and provide a fix.


Japanese (ja_JP) by Colocal.


  • Setting page — Basic.
  • Setting page — Basic (Bottom).
  • Setting page — Advanced.
  • Setting page — Perferences.
  • Setting page — Benchmark.
  • Setting page — WooCommerce.
  • Setting page — Exclusion.
  • Setting page — Expert mode.
  • Setting page — Cache statistics.
  • Setting page — About author.
  • Front page — Benchmark (footer text)
  • Debug message (Normal mode)
  • Debug message (Expert mode)


  • Upload the plugin files to the /wp-content/plugins/cache-master directory, or install the plugin directly through the WordPress plugins screen.
  • Activate the plugin via the ‘Plugins’ screen in WordPress.
  • Navigate to the Cache Master menu in the Plugins section and configure your options.


Should I disable other cache plugins?

Cache Master caches entire webpages into static HTML files. Therefore, it is recommended to disable other similar cache plugins that perform the same function. However, it can function alongside object cache plugins without issue.

How can I determine whether the caching is working or not?

Be aware that logged-in users will not trigger the caching process. To verify caching, use incognito mode or a different browser to revisit the same webpage, and then you can check the cache status in one of the following ways:

  • View the source code of the webpage and check the debug message as shown in screenshot (L).
  • Enable the benchmark information in the footer section as shown in screenshot (K), where you can see the cache status.

If there is no debug message in the source code, or if the cache status consistently displays ‘No’, there might be a plugin conflict with Cache Master that prevents it from working correctly.


18 Փետրվարի, 2023
Only used very briefly so far, but, first impressions = Excellent! It’s the only cache plugin I found that works well with Wincache/IIS/Windows. It’s very clean and simple. The widget is useful, as are the statistics if you enable them. Does exactly what I want. The only thing I wish it would have as a really nice addon, is a way to pre-load the cache by visiting each post/page, though I can sort that externally. Not of failure of this plugin, but, it breaks the ‘simple download monitor’ download links for all files on my site. There is, due to the design of this plugin, an easy fix (though it errored on my site with a ‘needle’ not found or similar first time!). Enable ‘Exclusions’ and add ‘download_id’ to the excluded $_GET variables. Clear your cache, and downloads should work again. This is because download links are simply sent to the home page with the get variable. Probably a dumb way to do it, but…
8 Փետրվարի, 2023
If you use this right and read the instructions — none the better for its purpose. Combine it with Autoptimze and you’re good to go.
2 Նոյեմբերի, 2022
Fantastic plugins, can use all cache with easy setting and configuration, thank you very much to the develloper and for let it free ! Best regards to you Terry Lin, very great work.
Read all 17 reviews

Contributors & Developers

“Cache Master” is open source software. The following people have contributed to this plugin.


“Cache Master” has been translated into 2 locales. Thank you to the translators for their contributions.

Translate “Cache Master” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


1.0.0 (10/01/2020)

  • First release on WordPress plugin directory.

1.2.0 (10/06/2020)

  • Add «Expert Mode».

1.2.1 (10/07/2020)

  • Improve debug message.
  • New setting option for Expert Mode.
  • Add warning message if a user use a plugin having conflicts with Cache Master.

1.2.2 (10/07/2020)

  • Improve debug message — Add SQL query numbers.

= 1.3.0 (10/08/2020)

  • Add setting option — Visibility of cache for logged-in users.
  • Add setting option — Archive pages: category, tag, date and author.
  • Add setting option — Homepage.
  • Fix some small issues.

1.4.0 (10/09/2020)

  • Add setting page — Cache statistics.
  • Improve code — Prevent conflicts with others plugins.

1.4.1 (10/16/2020)

  • Add feature — Automatic installation of Expert Mode code. (Removed in later versions)

1.5.1 (10/17/2020)

  • Add setting page — Benchmark settings.
  • Add feature — Benchmark information in widget or footer area.
  • Fix some small issues.

1.5.2 (10/17/2020)

  • Add a Clear Cache button on admin bar.

2.0.0 (10/27/2020)

  • Support to WooCommerce plugin.
  • Add setting pages — WooCommerce, Exclusion, Advanced settings.
  • Add an option — HTML debug comment.
  • Improve cache statistic page.
  • Update translation strings for zh_TW, zh_CN.
  • Fix issues.

2.0.1 (10/27/2020)

  • Fix SQLite driver error after performing a new installation.

2.0.3 (10/31/2020)

  • Support to WP-CLI

2.1.0 (11/15/2020)

  • Add options — Now, you can use unix socket or TCP in Redis, MongoDB and Memcaced Drivers.
  • Update core library to 1.3.1
  • Add unit tests and run the tests before releasing new updates.
  • Fix issues.

2.1.1 (10/31/2021)

  • Fix type hint.
  • Driver will fall back to File driver if current driver is unavailable.
  • Test up to PHP 8.0
  • Test up to WordPress 5.8.1

2.1.2 (8/28/2022)

  • Fix a type hint issue that occurs a PHP 8 fatal error.
  • Test up to PHP 8.0
  • Test up to WordPress 6.0.1
  • Fix coding style to fit the WordPress coding standard.

2.1.3 (5/29/2023)

  • Test up to PHP 8.2.5
  • Test up to WordPress 6.2.2
  • Add Japanese translation.