title: How do you do full page caching with dynamic information
body: <p>I imagine a very common scenario is where an entire dynamic page can be cached in such a way that an entire framework/CMS stack can be bypassed, except that some small amounts of information change depending on whether somebody is logged in or not. For example, the menu might change from "login" to "Welcome Somebody!". No there's not way to cache the page obviously.
  One solution I was thinking of would be load this information via AJAX after the page has loaded already.
  Does anybody have an advice here?</p>