edx/edx-platform — pull request #5623 by adampalay (2014-10-17 17:41:52+00:00)
Title: cache user ids for users with disabled accounts

@ormsbee , not sure if this is the right idea. I noticed that the UserStanding table was taking up a lot of db time, which is ridiculous seeing how small of a table it is. I thought caching its relevant content might speed up our response time.

See:
https://rpm.newrelic.com/accounts/88178/applications/3343327/databases#id=407521706