code: def put(self, message):
          
          timeout_ms = 0
          while True:
              socks = dict(self.poller.poll(timeout=timeout_ms))
              if self.zmq_socket in socks and socks[self.zmq_socket] == zmq.POLLOUT:
                  # The copy option adds latency but reduces the risk of ZMQ overflow
                  self.zmq_socket.send_pyobj(message, copy=True)
                  return
              else:
                  timeout_ms += 1
                  logger.debug("Not sending due to full zmq pipe, timeout: {} ms".format(timeout_ms))
docs: This function needs to be fast at the same time aware of the possibility of
          ZMQ pipes overflowing.
  
          The timeout increases slowly if contention is detected on ZMQ pipes.
          We could set copy=False and get slightly better latency but this results
          in ZMQ sockets reaching a broken state once there are ~10k tasks in flight.
          This issue can be magnified if each the serialized buffer itself is larger.