In this case, an async (via cl-async) application served by an async app server (http://wookie.lyonbros.com/), so async all the way down using evented I/O vs an async server (Woo) that farms out all requests to a synchronous thread pool.

I've been asked multiple times why I "didn't just use Woo" by people who don't understand that Turtl's server was async and Woo doesn't support async.