What are the limits of DocumentDB? You know, like max size of database, max size of document, max number of documents per database, max. number of attributes per document, max. number of databases per DocumentDB account.

What's the max. duration of database query, max size of query result.

What kind of performance can be expected, does it decrease as the size of database increases or it remains constant?

I'm going to wait a few days until hype settles.