I’m updating every day over 1000 posts in my website and every time post is updated it pops up to the front page and the assigned categories/tags.
Currently i’m using w3 total cache (free) version, every time I update a single post it is re-caching the whole page, so that means it caches the home page, categories, tags over 1000 times per day which is not what i want.
I would like to have a cache method that updates the page per specific time when the user enters the page. For example:

Let’s say I want to set the page to be updated per 3 hours (only when the user enters the specific page).

1. User 1 enters (Page 1) at time (13:00) -> page is being cached.
2. User 2 enters (Page 1) at time (14:00) -> shows him the cached page.
3. User 3 enters (Page 1) at time (19:00) -> page is being re-cached.

Hope that makes sense. Which plugin will be best for what I’m looking for? The other issue is that i have near 1 milion pages, so automatic caching for all pages is not an option.