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Re: moving forward on draft-lear-httpbis-svcinfo-rr

"Martin J. Dürst" <duerst@it.aoyama.ac.jp> Wed, 06 February 2013 00:35 UTC

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Date: Wed, 06 Feb 2013 09:32:58 +0900
From: "\"Martin J. Dürst\"" <duerst@it.aoyama.ac.jp>
Organization: Aoyama Gakuin University
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To: "\"William Chan (陈智昌)\"" <willchan@chromium.org>
CC: Eliot Lear <lear@cisco.com>, Roberto Peon <grmocg@gmail.com>, "ietf-http-wg@w3.org Group" <ietf-http-wg@w3.org>
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Subject: Re: moving forward on draft-lear-httpbis-svcinfo-rr
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First, what others (e.g. Mark) said. Second, some details below.

On 2013/02/06 6:27, William Chan (陈智昌) wrote:

> If we stuff SETTINGS into the DNS record, we'd have to keep in mind
> TTL. Either the record would need to include TTL info for the
> SETTINGS, or it'd have to be coupled with the record's TTL, which I
> think is probably undesirable.

I think you mean that you want the SETTINGs in the DNS record to have a 
shorter TTL than the record itself. But that couldn't possibly work. The 
browser would understand the SETTINGs and would poll DNS with an 
interval corresponding to the higher SETTINGs TTL, but DNS caches would 
only use the lower DNS record TTL and therefore wouldn't get updated.

Regards,   Martin.

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