[
https://issues.apache.org/jira/browse/DISPATCH-512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16014044#comment-16014044
]
Gary Tully commented on DISPATCH-512:
-------------------------------------
Another view of the same thing is that a message producer has a latency on send
guarantee. Either the message goes directly to a consumer or the message gets
diverted to the alternative sink/source if consumers go away or are too slow to
respond.
> Link route with alternate that can drain and revert
> ---------------------------------------------------
>
> Key: DISPATCH-512
> URL: https://issues.apache.org/jira/browse/DISPATCH-512
> Project: Qpid Dispatch
> Issue Type: Improvement
> Components: Routing Engine
> Reporter: Gary Tully
>
> Link routing provides for direct dispatch. A sender can be directly
> associated with a receiver.
> What happens when there is no receiver?
> Having the option to use an alternative or divert address when the receivers
> are unavailable, and having the ability for the router to fall back to the
> original when the divert address has drained would be magical.
> For example:
> Sender published to address A
> Receiver consumes from A and Sender is rate limited to the consumption rate
> of the receiver. all is good.
> Receiver goes offline. At this point the Sender can block, however, if there
> is an alternative address, the Sender can continue to publish at any rate.
> When the Receiver come online, the routing engine 'diverts' it to the
> alternate address.
> At some stage the routing engine may be able to undo the divert and reconnect
> the link from Sender to Receiver, once the alternate address has drained.
> In theory this seems possible, in practice it may be tricky, but it would be
> a smashing feature.
> For a bursty Sender it always gets to publish.
> For a receiver, it gets to consume as fast as it can, and if it cannot
> keep-up (or is offline) it gets to resume from a alternative address and then
> auto reconnected to the Sender when there is a window to switch back. i.e: a
> pause in the producer.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
