Mniot posted:

I understand that Async is popular if you want to do callbacks, though I haven't used it. At my office, we use Bluebird for promises. Then your 10 nested callbacks turn into 10 chained promises.

If it's a straight chain, promises are nice. They often feel easier to wrap your head around, too. On the other hand, whenever I start working with Node's streams (which are quite nice) I need to use callbacks and then I regret the callback/promise mixture that I end up with.

Finally you could look into using fibers, which I think would be the most pleasant way to handle a sequence of DB calls.