What's tricky is that generally queues are difficult to avoid; they are everywhere in computing. Network has queues, hardware has queues, services have queues,

What's tricky is that generally queues are difficult to avoid; they are everywhere in computing. Network has queues, hardware has queues, services have queues, operating systems have queues, frameworks and runtimes have queues, your clients will have queues. You often have very limited visibility on many of those, nevermind having any controls, especially if you are not even aware that the queue exists.