I was there during that time, and don't recall anyone actually being able to confirm that those issues were due to the underlying DB, but I'll go back and check

I was there during that time, and don't recall anyone actually being able to confirm that those issues were due to the underlying DB, but I'll go back and check now that you mention it. I will say that while I know almost nothing of Coinbase's internals, I have seen enough of two separate exchanges to require a signed NDA. I was intending on working with them to suggest a solution to an issue they were having, and in both cases once I saw their platform I turned around and ran the other direction as quickly as possible. One of them, I don't mind saying now, was Cryptsy.