On Fri, Dec 1, 2017 at 5:02 PM, Wessels, Duane <dwess...@verisign.com> wrote:
> > > On Dec 1, 2017, at 8:38 AM, Ólafur Guðmundsson <ola...@cloudflare.com> > wrote: > > > > I strongly disagree with your "terminology", TTL is a hint about maximum > caching period, not a demand or a contract. > > You say its just a hint. If you put a TTL of 1 hour on your data, and I > have a recursive name server that reuses it for 2 hours, 12 hours, 5 > days... thats okay? > > If its just a hint then we are we spending all this effort on "serve > stale"? > > DW > > Strictly speaking yes, it is the same as when a Secondary does not update the zone for a long time. DNS is not a strict coherency protocol, thus playing loose with the time things are with in reason is ok. Stretching TTL from 1 Hour to 1 day is IMHO BAD, doing it for 10% or 10 minutes is fine. We are getting into religion here, the original poster called people that cap TTL's Heretics, I disagree with that labeling of myself and others that are applying sane caps. Olafur
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