tl;dr:“In this post, we're going to explore queueing in the context of HTTP requests. We'll start simple and gradually introduce more complex queues. When you're finished with this post, you will know: (1) Why queues are useful. (2) 3 different types of queue. (3) How these 3 queues compare to each other. (4) 1 extra queueing strategy you can apply to any type of queue to make sure you don't drop priority requests.”