[yahliwharton]

This is not a cluster test. NoSQL databases in general are optimized for scaling horizontally on commodity hardware. That's more tricky in RDBMS.

[collyw]

Most people I have spoken to are using NoSQL on single nodes.

[brightball]

I think a lot of people jump on NoSQL solutions when scale out isn't needed because of the permeating "do everything in the application / client" mentality these days.