Redis for Object Cache & Database Cache on Litespeed Cache Wordpress Plugin .... ???

I have 2 questions:

  1. If I want to use Redis for Object Cache, should I manually install Redis server first on my VPS then enable the PHP Redis extension on Cyberpanel? or can I just activate the PHP Redis Extension without manually installing the Redis Server?
  2. If I want to use Database Cache using Redis on Litespeed Cache Plugin, should I manually install Redis Server First? or I can just enable it on LiteSpeed Cache Plugin without installing Redis Server?

You need PHP Redis extension as well the Redis server.

big thanks!