my little webnode has a bit overboard with it, so first up apcu for initial posts that haven't been saved, then the flafile json and md files, and then of course mariadb for curated stuff or shit like tags, and then the sqlite cache for rendered html paages, and then finally the rendered html/rss/atom archives that get eventually dumped after a thread hasn't been updated in a while, there are different use cases for all of these things