Include memcache and settings for ram etc as standard.
Since Plesk Onyx you will be able to install memcache as a Docker container and configure http(s) proxy rule for it to map to your web app.
Docker and proxy rules are available in Plesk Onyx Preview already, you can try it here https://talk.plesk.com/threads/plesk-onyx-preview-and-feedback.337172/
Benjamin Hodgetts commented
This should ideally be "Memcached" rather than "Memcache" which is the older, not as feature rich version. It's one of the few modules missing from the "Multiple PHP Install" packages which is a major problem for some people.
apc is redundant due to opcache in php
Kerem Şen commented
Plesk should have Memcache and APC
Plesk should have a caching section, with controls for PHP opcache, Memcache and redis.
this is super idea :)