title: Quick Reference Guide to Various NoSQL Databases
body: <p>I'm looking for one place that summarizes the main properties of the NoSQL databases that I keep seeing referenced - in particular, MongoDB, Riak, Redis, Memcached, Membase, and Cassandra. Types of queries, acid, architecture for/properties of scaling, etc. All in memory, overflow to disk, backup on disk, or mainly only indexes in memory? </p>