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https://issues.apache.org/jira/browse/QPID-5466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Ross updated QPID-5466:
---------------------------

    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.

  was:
(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.


> Dispatch - Add different forwarding semantics for addresses
> -----------------------------------------------------------
>
>                 Key: QPID-5466
>                 URL: https://issues.apache.org/jira/browse/QPID-5466
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Qpid Dispatch
>            Reporter: Ted Ross
>            Assignee: Ted Ross
>
> (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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