Thanks for writing this. I often find it difficult to wrap my head around some of these crates if I'm unfamiliar with the problem space. Often times if you have

Thanks for writing this. I often find it difficult to wrap my head around some of these crates if I'm unfamiliar with the problem space. Often times if you haven't tried building a server before you won't know why you would use a crate like this. Having a high level overview of what you might use it for and a simple walked through example is really helpful.