[dns-operations] RFC2308, negative answer caching, and the largest gTLDs

A. Schulze sca at andreasschulze.de
Mon Mar 12 10:53:23 UTC 2018

Am 11.03.2018 um 23:30 schrieb Olafur Gudmundsson:
> Right now if a resolver caches an entry for a domain after it is registered but before it is available in the com/net server the query goes to, that resolver is blind to that fact for 24 hours, 
> Please lower this value to something lower 900 would be great 7200 is fine if you lower all TTL’s from com/net/etc…. to that at the same time :-) 

other aspect: customer happiness.

we (try to) setup our infrastructure the make a simple statement true: "If you change something, wait an hour"
That's what customers understand+remember and reduce help desk calls.
neg. TTL 3600s would be perfect.

> Internet moves faster today than it did in 1990, 


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