Previously, we weren't clearing the users out of memcached (we just
killed them in the database), so in fact users were not logged out
when we deactivated them for an hour (when the memcached caches would
expire).
(imported from commit 0f0a2f70e003c184106c73b22b876f57c1ef3371)
The previous situation was bad for two reasons:
(1) It had a lot of copies of the code, some of them missing pieces:
UserProfile.objects.get(user__email__iexact=foo)
This was in particular going to be inconvenient since we are dropping
the __user part of that.
(2) It didn't take advantage of our memcached caching.
(imported from commit 2325795f288a7cf306cdae191f5d3080aac0651a)
Tim Abbott
Leo Franchi