ContinuumIO/blaze — pull request #885 by mrocklin (2014-12-18 04:15:23+00:00)
Title: Caching datasets

A set of changes surrounding computing on datasets

1. `Data` is now `InteractiveSymbol`. `Data` remains a user level function so the public API is unchanged.
2. `Data('uri::/data/path')` creates `Data('uri').data.path`
3. Because we now prefer working on database-like-things we also support computing on dicts of data resources
4. The Server now accepts a single data resource, not a namespace. However that single data resource can be a dict, which, by point 3, is now a valid computable-thing. So the public API is unchanged
5. We add a Cached Dataset thing holds a dataset and caches computations against it in a dict-like object. This dict-like object can be a [`chest`](http://github.com/mrocklin/chest).