[dns-operations] Presentation / paper on cache / TTL times?

[Pieter Lexis]

Hi Warren,

On Sat, 5 Nov 2016 09:38:02 +0530
Warren Kumari <warren at kumari.net> wrote:

> A while back there was a cool presentation showing that most records
> expire from caches after something like 3 hours.
> 
> I *think* that it was at an OARC meeting, but I cannot find it at the
> moment -- anyone know what / where it was?

I _think_ you mean the presentation "Negative Caching of DNS Records" from the OARC Spring 2015 Workshop[1], given by Stephan Lagerholm and Joe Roselli. Slides are here[2]

1 - https://indico.dns-oarc.net/event/21/contribution/4
2 - https://indico.dns-oarc.net/event/21/contribution/4/material/slides/0.pdf

Cheers!

-- 
Pieter Lexis
PowerDNS.COM BV -- https://www.powerdns.com