SpinupWP MU Plugin

This must-use plugin adds page cache purging functionality to your WordPress site. In addition to automatically clearing the page cache for individual posts, pages, and other content when it is updated, this plugin allows you to purge the cache for the whole site as well. You will need to download this plugin and install it in the /wp-content/mu-plugins/ folder.

Install

You can install the mu-plugin with Composer:

composer require deliciousbrains/spinupwp-mu-plugin

Or manually by downloading the zip and then copying the contents of the src directory to /wp-content/mu-plugins, giving a directory structure like so:

├── wp-content
    ├── mu-plugins
        ├── spinupwp
        └── spinupwp.php
    ├── plugins
    └── themes

Finally add the following constants to your wp-config.php:

define( 'WP_CACHE_KEY_SALT', '{DOMAIN}' );
define( 'WP_REDIS_SELECTIVE_FLUSH', true );
define( 'SPINUPWP_CACHE_PATH', '/cache/{DOMAIN}' );