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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can someone please explain the scenarios where we might have Rabbit message storage (is it mnesia?) corrupted in a way that it is not recoverable?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In the solution I am working on, I simply cannot afford to lose any messages. In order to secure this, I will:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Rely on publisher confirms. This should ensure that broker will always confirm whether it assumed responsibility and persisted the message.
<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Implement durable queues/exchanges.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Ack enabled in consumers to prevent losing messages if consumer dies halfway. I will solve the ordering problem on the consumer side.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Even though all of these above prevent message loss in normal conditions, none of them covers the case where data gets corrupted in the broker. There is a window (albeit small) that things might go wrong: broker assumes responsibility (message
is in the disk) and before message is sent to the consumer, broker experiences problems which corrupts the storage. If I can’t bring the broker up with all data previously persisted, I’ve lost messages – producer forgot about the message as broker accepts
responsibility and consumers have no idea about the message as it hasn’t been delivered to it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Am I a total paranoid that is beyond help? Even so, I would really appreciate any info you guys can share.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal">oseymen<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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