Selecting a speedy NoSQL datastore

[Hank Knight]

There are an abundance of NoSQL datastores powered by Erlang.

Riak, CouchDB, Dynomite and Scalaris to name a few.

I need to select a datastore for a logging application.

We anticipate 1,000+ write transitions per second and 100+ read
transactions per second.

There will be about two dozen columns and each of the columns will
store between 200 and 800 bytes of data.

The hosted solution will be served on a cloud.

Speed is important.  Please help me select a datastore with
low-latency and high scalability.

Thanks!
- Hank