You could share one queue amongst several devices, and Rabbit will ensure that only one device gets the message (with proper acking on the subscriber side). If

You could share one queue amongst several devices, and Rabbit will ensure that only one device gets the message (with proper acking on the subscriber side). If a message gets sent to an exchange that has no queues attached, typically it will get sent to a dead letter exchange. Edit: Most Rabbit client libraries have two different modes, one where you automatically acknowledge any message that is received, and another mode where you must explicitly acknowledge that you've received the message.