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  1. Qpid Dispatch
  2. DISPATCH-710

Dispatch - Add different forwarding semantics for addresses

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Duplicate
    • None
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    Description

      (For version 0.2)

      At present, if there are multiple receivers for a particular address, Dispatch delivers a copy of each message to all of the receivers. This feature adds the ability to by-configuration deliver messages to only one of those receivers.

      The configuration for this feature is per-address and defines two settings:

      • fanout is either Multiple or Single (and a placeholder for Group). Multiple fanout means all subscribers receive each message. Single fanout means that only one subscriber receives the message.
      • bias controls how single-fanout is treated. The following values for bias are provided:
        • Closest - each message is delivered to the closest/least-cost subscriber.
        • Spread - messages are spread indeterminately across all subscribers.
        • Latency - (not implemented yet) Messages are delivered in a balanced way to all subscribers based on the latency of acknowledgements. This mode attempts to keep all subscribers equally fed with incoming messages.

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              tross Ted Ross
              tross Ted Ross
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                Updated:
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