We make redis available for shared hosting customers, but it's a shared instance, so proceed with caution, and make sure you use a prefix for your redis keys. How you do this depends on the Wordpress plugin in question. The most common one is:
https://wordpress.org/plugins/redis-cache/
If you use this, you'll need to put the following inside your wp-config.php:
define('WP_REDIS_PREFIX', 'randomstringgoesheretomakeitunique');
make sure to replace randomstringgoesheretomakeitunique with something random!
