[samhw]

NOTE: I can't now edit this comment, but I wanted to clarify, per below, that many of these issues are more about my experience of Cassandra in the specific context in which I experienced it, and not the database itself. It's a complex tool, but, for the constituency of users for whom it's appropriate, it's as competently architected as just about any other database. My criticisms mostly centre on the culture of engineering teams which choose to use a very complicated tool that requires significant skill, in contexts where it's simply not needed.