Concurrency is hard. Even for those who have been through a university course of concurrency, the alignment of theoretical knowledge with implementations in mainstream languages is hard. I want to tell you about a couple of basic scenarios where mutli-threading may seen like a promising idea to increase a program's throughput and what constraints come very quickly into play, making it more difficult than it might initially seem. I want to do it in an approachable manner, so that anyone with only a basic experience in programming can understand and take advice.
