Re: Recommended DNS server for a medium 20-30k users isp

[brent saner via NANOG <nanog () lists nanog org>]

On Fri, Aug 8, 2025, 00:41 John Todd <jtodd () loligo com> wrote:

> You beat me to it - dnsdist is an exceptionally robust solution for
> front-ending recursive (or authoritative) servers. Quad9 is indeed using it
> for all our recursive systems, and we split traffic on the "back-end"
> between PowerDNS recursor and Unbound.  It (dnsdist) has a "packet cache"
> feature which handles much of the load once warmed, and it answers on
> DOT/DOH as well as providing for a very rich set of tooling that allows
> management of unwanted behaviors.


Thanks, John! I was considering evaling/deploying dnsdist for our own
customers, and this has me convinced that's a solid direction; if it works
well for y'all at Quad9, it'd definitely work for us. Cheers!

>
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