@dragas There is no reason to use coroutines unless you have any suspending (async) function. If it all just CPU-bound, the coroutines offer a little help/improvement. For CPU-bound task, like parallel collection processing, Java8 streams work best. Coroutines are designed for tasks that wait for something most of the time.

Somewhere down the pipeline you will still have to run blocking task while other coroutines depend on it, won't you? 😕

If there is an actual blocking thing, yes, you will have to do a blocking call. But if you have asynchronous IO or you're using

delay

you do not have blocking.