> > Many protocols for distribution of data have a certain ordering and an 
> > acknowledgement 
> > mechanism. NOTIFY does have an acknowledgement mechanism (but PowerDNS 
> > masters don't 
> > do a lot with it) but no ordering. It's easier to lose things with NOTIFY 
> > than with 
> > other replication protocols.
>
> The problem with that approach is, using backend-specific replication 
> "marries" one 
> to that particular technology, as it is backend-specific.
>
> The question is not one of "how much does it cost to get the technology in", 
> but 
> "how much does it cost to get it out".
>
> It almost sounds like pdns should or could be doing more with the NOTIFY 
> message. Or no?

If you are afraid of losing a notify, you are free to force your Supermaster 
to periodically notify all Superslaves about *all* zones. If Superslave hasn't
yet heard of a zone due to a missed NOTIFY, it'll pull it from the master.


kind regards,

Sebastian

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