I'm interested in this too. The only thing I've read so far is Fowler's "NoSQL Distilled". It's not exactly a hardcore text but it does give a good overview o

I'm interested in this too. The only thing I've read so far is Fowler's "NoSQL Distilled". It's not exactly a hardcore text but it does give a good overview of the different types of databases, and the tradeoffs they make in terms of consistency/availability.