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RE: Issue with "bytes" Range Unit and live streaming

<K.Morgan@iaea.org> Thu, 21 April 2016 10:30 UTC

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From: K.Morgan@iaea.org
To: craig@ecaspia.com, fielding@gbiv.com
CC: ietf-http-wg@w3.org
Thread-Topic: Issue with "bytes" Range Unit and live streaming
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Date: Thu, 21 Apr 2016 10:25:07 +0000
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Subject: RE: Issue with "bytes" Range Unit and live streaming
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On Thursday,21 April 2016 05:18 craig@ecaspia.com wrote:

>

> Re: Representation caching

>

> Whether a representation is considered cacheable in this use case is at

> the discretion of the origin server and specific to the use

> case/application - as it should be (imho). There's no *necessity* in

> having a periodically-appended resource marked non-cachable, correct? If

> the resource mutates, it's not cacheable. If it's just being appended

> to, it is cacheable. And if an appended resource stops being appended

> to, it doesn't invalidate the cached representation.

>



I couldn't agree more. However, it seemed the prevailing sentiment when we tried to resolve the related issue of ranges before content codings, with a new bbcc unit (bytes-before-content-coding), was that the use cases for append-only growth represent an insignificant portion of HTTP traffic. "We live by app-specific protocols to handle these cases. What is so special ... that it must be addressed by http (in a very ugly way)?" [1]



[1] https://lists.w3.org/Archives/Public/ietf-http-wg/2014AprJun/1383.html







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