That's an overly complicated way of saying "use bounded queues". Your system can get into a really bad state if you don't use bounded queues, and take a long ti

That's an overly complicated way of saying "use bounded queues". Your system can get into a really bad state if you don't use bounded queues, and take a long time to recover. Unfortunately, limiting your queue size is not a quick hack. The reason you use it mostly that it forces you to develop feedback mechanisms, flow control, retry logic, and fairness across your whole system.