RabbitMQ wait for multiple queues to finish

Question

Ok here is an overview of what\'s going on:

    M <-- Message with unique id of 1234
    |
    +-Start Queue
    |
    |
    | <-- Exchange
   /|\\
  / | \         


        

Answer 1

I am a little unclear on what you are trying to achieve here. But I would probably alter the design somewhat so that once all messages are cleared from the queues you publish to a separate exchange which publishes to queue 4.