caching a page that was dynamically created ?

Say you have a page that you dynamically created with ajax calls and RJS. Can you somehow get a copy of what that final page looks like and somehow cache it away and later serve it from the cache ?

A problem seems to be that if you navigate away from a dynamic page and then hit the back browser button, you can then lose the dynamic content. I now you can have your own sort of back link, but I am wondering what other things might be possible. You also can't bookmark stuff that was dynamically created either. Whatever strategy you employ effects the entire site, so that if you latter change it, you have to change alot of code ..

You could save in the session (or the database) the current state of the page and then use that information to re-render the appropriate data when asked for that page again.

Colin