My exposure to Document Databases

Document Databases seem to be the current hot topic – or rather how to scale your data horizontally and cheaply. RavenDB looked like it could bring the .NET platform to the forefront until the commercial model was announced. Oren deserves to be paid for this product – but I can’t see the current strategy working. Most of the other popular DocDBs are free (or at least more proven) – but the pricing model is more akin to SQL Server than to MongoDB.

I thought the best way to represent my interest / exposure to document databases was via a graph. So here it is (click to enbiggen):