This technique puts a lock in your serving path which will necessarily limit parallelism. Go channel operations are not "non-blocking" in every sense. Even if

This technique puts a lock in your serving path which will necessarily limit parallelism. Go channel operations are not "non-blocking" in every sense. Even if you have them in a select block your thread has to take the mutex to find out if the buffer is empty (on receive) or full (on send).