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From artnaseef <>
Subject Re: Help with a Failover testing that shows missing messages
Date Tue, 01 Mar 2016 15:11:34 GMT
I missed something critical here - Topics.

Topic flow across a network of brokers with non-durable subscriptions only
is not reliable.  Brokers subscribe to one-another in the same manner that
end-clients subscribe to a broker.  So, for topic subscriptions, that means
that while the bridge between two brokers is out (or one of the brokers is
down), all messages published to the topic will fail to forward across the

Once the bridge is re-established, newly published messages continue to
flow, but old ones do not.

Making matters worse in this scenario - there's no easy way for the topic
subscribers to know this happens.

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