there is nothing provided out-of-the-box for that,...

# rx

[jw]

there is nothing provided out-of-the-box for that, but you could write that yourself by creating a Scheduler which wraps io() and then limits worker creation to 5. You would have to decide how to distribute the work that's buffered yourself. Probably with a single queue giving you the ability to do things like sort by priority. But we're not far off from the "just use executors" case.