1. Install and activate the Redis plugin for WordPress at https://wordpress.org/plugins/redis-cache/
2. Open wp-config.php and add these variables:
define("WP_REDIS_HOST", 'IP_FROM_REDIS_INFO');
define("WP_REDIS_PORT", 'PORT_FROM_REDIS_INFO');
define("WP_REDIS_PASSWORD", 'AUTH_KEY_FROM_REDIS_INFO');
define("WP_CACHE_KEY_SALT", 'example.com');
define("WP_REDIS_SELECTIVE_FLUSH", true);
Replace example.com with your unique domain. WP_REDIS_SELECTIVE_FLUSH is set so flushing the cache from WordPress flushes only the cache for a select key. All the other information you can obtain from your cPanel account -> UNIXy Redis -> Instance Info
