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Re: [IANA #1218648] expert review for draft-ietf-httpbis-targeted-cache-control (http-fields)

"Roy T. Fielding" <fielding@gbiv.com> Wed, 15 December 2021 01:05 UTC

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From: "Roy T. Fielding" <fielding@gbiv.com>
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Date: Tue, 14 Dec 2021 17:02:57 -0800
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Subject: Re: [IANA #1218648] expert review for draft-ietf-httpbis-targeted-cache-control (http-fields)
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> On Dec 14, 2021, at 1:54 PM, Sabrina Tanamal via RT <drafts-expert-review-comment@iana.org> wrote:
> 
> Hi Roy, 
> 
> As backup expert for the Hypertext Transfer Protocol (HTTP) Field Name Registry, can you review the proposed registrations in draft-ietf-httpbis-targeted-cache-control for us? Please see
> 
> https://datatracker.ietf.org/doc/draft-ietf-httpbis-targeted-cache-control/
> 
> If this is OK, when the IESG approves the document for publication, we'll make the registrations at
> 
> https://www.iana.org/assignments/http-fields
> 
> The IESG has asked us to set a two-week deadline for registration reviews. The due date for this request is 2021-12-28.
> 
> Mark Nottingham is also an expert for this registry, but he is one of the authors of this document.
> 
> Thanks,
> 
> Sabrina Tanamal
> Lead IANA Services Specialist

I think the registration of CDN-Cache-Control is okay, but the template's suggested
Comments are potentially confusing:

   *  Comments: Cache-Control directives targeted at Content Delivery Networks

would be better stated as

   *  Comments: Cache directives that only apply to a Content Delivery Network's cache,
       overriding any corresponding Cache-Control directives or defaults.

This is a suggestion to the authors, rather than an objection -- please go ahead
and register the header field with or without this minor change.

....Roy

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