I have pages that are generated dynamically but don't change all that often. Would like to use Nginx to cache those pages.

However every page has a "log in" bar at the top, similar to this forum. A logged-in user would see his name and a "log out" link. A user who isn't logged in would see links to "log in" or to "register".

How do I cache a page like this where there is a small element that needs to be personalized? Normally this is a job for ESI, but Nginx doesn't support ESI. Any suggestions?

Thanks.