In the recent 6.1 WordPress update, the “Site Health Status” check has added an “Object Cache” recommendation. So then, should you install memcached? No, use Redis instead 🙂
Here’s how:
First, install Redis Object Cache WordPress plugin as you normally would
Second, install Redis on your webserver.
Third, go to Settings > Redis and enable object cache.
Fourth, If you have Redis hosted somewhere else (other than localhost). Update your wp-config.php with the following:
define( 'WP_REDIS_HOST', 'REDIS_ENPOINT' );
define( 'WP_REDIS_PORT', 6379 );
define( 'WP_REDIS_TIMEOUT', 1 );
define( 'WP_REDIS_READ_TIMEOUT', 1 );
Keep on caching ?