We are trying to set up our own openstreetmap server. From what I read here, you can use a variety of caches to speed up serving the data.
Now, once a week, the people of openstreetmap provides a differential update with the changes in the maps.
If I import those changes once a week, how does TileStache know that what it has generated is no longer valid? Does it handle it itself, or should I invalidate the cache from somewhere else?
Can I do it intelligently? ie, only invalidate the regions that contain changes.