Thanks latch. You're right. I genuinely feel like an idiot for asking such a vague out of place question in this forum.

To save myself some embarrassment though.. I did outline that my use case was "web analytics" and "real-time". I also suggested I was looking for high level insight.

Still though, I can understand how you might be confused. Let me be clear. I based my expectations on this list:

http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis