lshift/diffa — pull request #124 by paulj (2012-04-24 00:28:02+00:00)
Title: New Tile Cache

This patch introduces a new tile caching mechanism that attempts to simplify the invalidation process and open the door for more arbitrary aggregation queries being performed.

Currently, it is acting as a drop in replacement for the existing `ZoomCache` based functionality. This is to limit the size of the patch, as adding the new REST API is likely to make this far too large to sanely review.