fmoo/sparts — pull request #64 by joeldodge79 (2014-04-07 15:11:42+00:00)
Title: Specify maxsize to QueueTask.queue

This can be used as a way to "throttle" throughput. Producers can either
block put on the queue (and pass the backpressure upstream) or
put_nowait and handle the backpressure some other way.