> What exactly are we going to sit there and do while waiting on the data we need to fulfill a query? On the data you need to fulfil one client's query. The an

> What exactly are we going to sit there and do while waiting on the data we need to fulfill a query? On the data you need to fulfil one client's query. The answer is that you do stuff you need to fulfil other clients queries, until you're ready to come back to the first one. I don't see what type systems have to do with your comment either. Scala uses asynchronous concurrency primitives (Futures) and it's statically typed.