title: ZeroMQ Messaging Queues
body: <p>I am working for a while with ZeroMQ. I read already some whitepapers and a lot from the guide, but one question remained open to me:</p>
  
  <p>Lets say we use PUB-SUB.
  Where or on which system are the messaging queues? On the publisher system side, on the subscriber system side or something in between?</p>
  
  <p>Sorry for the maybe stupid question.
  This picture is from the Broker vs. Brokerless whitepaper.</p>
  
  <p><a href="https://i.stack.imgur.com/mDfu8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mDfu8.png" alt="enter image description here"></a></p>