A guide to the fundamental concepts that underlie message queues, and how they apply to popular queueing systems available today.Message Queues are now fairly prevalent—there are so many of them showing up so fast you'd think they were rabbits with an unlimited supply of celery, resulting in an kafkaesque situation where making a decision is like trying to catch a stream in your hands. If only there were fewer simple services that could help with publishing and subscribing, it would be so much e...