>> 1) would you consider Cassandra (0.5+) "safe enough" for a primary data >> store? > > Yes. Several companies are deploying 0.5 in production. It's pretty > solid. (We'll have a 0.5.1 fixing some minor issues RSN, and a 0.6 > beta.) And I agree that it's significantly simpler to deploy (and > keep running) than HBase.
Is there any public information on the production installations you mention above? So far Googling/browsing we have mostly (only I think) seen production cases where the data has been possible to re-generate in the event of loss. As we are evaluating use of Cassandra for "important" data, we would be interested in hearing any success or failure stories. -- / Peter Schuller aka scode