In Kotlin for instance you can execute your coroutines with different "dispatchers", which have different behaviors. You can for instance use a dispatcher with

In Kotlin for instance you can execute your coroutines with different "dispatchers", which have different behaviors. You can for instance use a dispatcher with multiple threads in a threadpool, run it in the main thread, a specific thread, in threads with low/high priority etc. Basically allowing you to write code using the async/coroutine paradigm, but then control its execution from the outside. So I've also used coroutines in Kotlin for CPU bound tasks with a nice speedup, where multiple sub-tasks get executed in parallel and then gathered when needed to produce new tasks etc., in a granular way that would be very intrusive doing with threadpools. Here I basically took the existing coroutine code and slapped some more threads on it. With that said, I'm not entirely sold on Kotlin's way either. Both Kotlin and Python have the "what color is your function" problem.