So is Greenplum (more so, actually.) Neither are useful for the Digg usecase. Edit: That is to say, they're optimized for large datasets, low concurrency, medi

So is Greenplum (more so, actually.) Neither are useful for the Digg usecase. Edit: That is to say, they're optimized for large datasets, low concurrency, medium latency, medium-to-high consistency and medium-to-low availability.