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Re: #290: Motivate one-year limit for Expires

From: Mark Nottingham <mnot@mnot.net>
Date: Thu, 18 Aug 2011 14:18:10 +1000
Message-Id: <E26CB1BD-88FB-4A35-A79C-06BC0737DFDE@mnot.net>
To: HTTP Working Group <ietf-http-wg@w3.org>
Scheduling for -16.


On 30/07/2011, at 6:47 AM, Mark Nottingham wrote:

> Remove the requirement in p6 3.3 and replace it with:
> 
> """
> Historically, HTTP required the Expires field-value to be no more than a year in the future. While longer freshness lifetimes are no longer prohibited, extremely large values have been demonstrated to cause problems (e.g., clock overflows due to use of 32-bit integers for time values), and most caches will evict a response far sooner than that. Therefore, senders ought not produce them.
> """

--
Mark Nottingham   http://www.mnot.net/
Received on Thursday, 18 August 2011 04:18:37 GMT

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