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Re: [OPSAWG] Finding and Using Geofeed Data

"Joe Clarke (jclarke)" <jclarke@cisco.com> Mon, 14 September 2020 17:08 UTC

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From: "Joe Clarke (jclarke)" <jclarke@cisco.com>
To: Randy Bush <randy@psg.com>
CC: Erik Kline <ek.ietf@gmail.com>, Massimo Candela <massimo@us.ntt.net>, Ops Area WG <opsawg@ietf.org>
Thread-Topic: [OPSAWG] Finding and Using Geofeed Data
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Date: Mon, 14 Sep 2020 17:08:43 +0000
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References: <8450cc78-8c60-ff7a-19f5-ea7335d262cd@us.ntt.net> <m25z8kdoqb.wl-randy@psg.com> <C65C82F2-E675-4D2A-A85D-9E3DAF453D77@cisco.com> <m2sgblbngx.wl-randy@psg.com> <f860f867-a8a1-82d0-813a-5d54e2479b3c@us.ntt.net> <CAMGpriUoWXqJq5JJSfEaKJkS_cuQeQyBtuu-D4vbrFj21gyNFA@mail.gmail.com> <m2d02o9tmo.wl-randy@psg.com>
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Subject: Re: [OPSAWG] Finding and Using Geofeed Data
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> On Sep 14, 2020, at 13:05, Randy Bush <randy@psg.com> wrote:
> 
>> FWIW, we tried to have some HTTP header discussion in 8805:
>> https://www.rfc-editor.org/rfc/rfc8805.html#name-refreshing-feed-information
> 
>        An entity fetching geofeed data using these mechanisms MUST NOT
>        do frequent real-time look-ups to prevent load on RPSL and
>        geofeed servers.  <xref target="RFC8805"/> Section 3.4 suggests
>        use of the <xref target="RFC7234"/> HTTP Expires Cacheing Header
>        to signal when geofeed data should be refetched.  As the data
>        change very infrequently, in the absense of such an HTTP Header
>        signal, collectors MUST NOT fetch more frequently than weekly.
>        It would be wise not to fetch at magic times such as midnight
>        UCT, the first of the month, etc., because too many others are
>        likely to do the same.

This text works for me.  But “UTC” is more canonical than UCT.

Joe

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