Immediate subscriber updating
Because the updates are propagated asynchronously to the Publisher, the same data may have been updated by the Publisher or by another Subscriber and conflicts can occur when applying the updates.Conflicts are detected and resolved according to a conflict resolution policy that is set when creating the publication.If immediate updating is used, the changes are propagated immediately using the two-phase commit protocol.If queued updating is used, the changes are stored in a queue; the queued transactions are then applied asynchronously at the Publisher whenever network connectivity is available.Without immediate updating, your changes are only committed to the local subscriber, and queued for distribution back to the publisher, and following that, the other subscribers.In both cases there is a period of time when a stale record is still at the other subscribers, and one of those subscribers may update the stale record and cause a conflict.
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To paraphrase the quoted block, with immediate update the only guarantee is that the commit is immediately updated to the publisher.
The changes will be sent to the other subscribers in due course.
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