How to setup a cron job to cache files automatically after expiry

Currently to is no option to automatically build the cache at once. Letting the cache build naturally based on visitor requests is required.

is it possible to write our own php file executing the functions used by you, to cache the pages, like clear the cache folder and revisit or send update request to all posts which will create cache? then we can run that php file via cron using CURL?

what about using a warm cache plugin on a cronjob schedule that might do it ? I was revisiting Cache Enabler + Warm Cache plugin https://www.ads-software.com/plugins/warm-cache/ works nicely https://community.centminmod.com/posts/64474/ ??

this is something promising will try this..thank you @eva2000