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Re: [DNSOP] Fwd: New Version Notification for draft-muks-dnsop-dns-thundering-herd-00.txt

Paul Wouters <paul@nohats.ca> Thu, 25 June 2020 18:29 UTC

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Date: Thu, 25 Jun 2020 14:29:03 -0400
From: Paul Wouters <paul@nohats.ca>
To: Mukund Sivaraman <muks@mukund.org>
cc: dnsop@ietf.org, Cricket Liu <cricket@infobox.com>
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Subject: Re: [DNSOP] Fwd: New Version Notification for draft-muks-dnsop-dns-thundering-herd-00.txt
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On Thu, 25 Jun 2020, Mukund Sivaraman wrote:

> For whoever is interested, this is a description of a pattern of queries
> noticed at busy public resolvers that has led to issues in at least 4
> different sites in the last 2 months.
>
> The current revision is a work in progress. We are still developing some
> mitigations for NIOS, and some more introductory text also has to be
> added.

I would add a more explicit section on using prefetching of frequently
asked queries, which mitigates (eliminates) the period when an answer is not
available in the cache.

Paul

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