[AlisdairO]

Riak makes sense for some workloads. For the vast majority of workloads out there, you will save time and money with an ACID system. Good ACID systems are mostly RDBMSs, so I would say, for now at least, that typical RDBMSs do have a leg up on other technologies out there.

[batou]

Definitely. Which is why we still use one. It's cheap, already there and does the job.