[wp-hackers] Saving the entire HTML sent to client

[IC IC]

To minimize the DB queries down to nothing on the home page of your
magazine styled web site, what do you say about the following idea?

Every time, you create a post or page (or cat or tag for that matter
), at the time committing that change into the database, have a plug
in run the home page  internally ( as if a visitor visited your home
page ) and grab the html generated and create a text file out of that
HTML ( from all the way up DOCTYPE down </html).  This way, your home
page ( be it home.php or front-page.php or whatever), may check if the
current user logged in and if not, just do a PHP include of that
recently generated file?

Does PHP provide a way to get a hold of that entire HTML? Would that
be a wp_footer hook?