edx/edx-ora2 — pull request #450 by wedaly (2014-06-23 11:28:08+00:00)
Title: TIM-652

* Fallback to file-based cache for classifier data
* Add info-level logging for cache hits/misses

Addresses [TIM-652](https://edx-wiki.atlassian.net/browse/TIM-652): Celery workers lose their cache after an exception causing many hits to S3.

@stephensanchez Please review.