Hi!
I wander if is it possible to write module witch cache $content variable (in page.tpl.php)?

I see this module as something close to the "Block Cache" module.
For nodes $cid=$nid and clear cache on node update or comment post.
For node lists there shoud be different rules to clear cache.

"Page Cache" is not a right way to do caching, so is it possible to write "Content Cache" module?
Or maybe this is done already?