I'll only add that Quasar offers several types of "send" and "receive" operations: blocking indefintely, with timeout and even "try" variants that will not bloc

I'll only add that Quasar offers several types of "send" and "receive" operations: blocking indefintely, with timeout and even "try" variants that will not block at all, as well as several mailbox types, so the developer can regulate queues, responsivity (and backpressure) as desired.