From: Pete Resnick (email@example.com)
Date: Mon Sep 01 1997 - 10:07:54 CDT
On 9/1/97 at 9:24 AM -0500, Simon Lyall wrote:
>If we are re-using message-ids every few years then there is a possibility
>that the above message-id might refer to one article on my site and
>another article on another site.
Right. And there is absolutely no reason that you can't simply create a
unique that lasts forever: Though it isn't in the current DRUMS message
format draft, the next draft will recommend using some representation of
the date (including year) on the left-hand side of the message ID.
>I note that draft-ietf-drums-msg-fmt-02.txt doesn't have provision for
>dates of more than 4 digits anyway. So this makes the message-id
>uniqueness about as robust as the year in the "Date: " header.
Not true. Year (which is a component part of date) is defined in -02 as:
year = (*CFWS 4*DIGIT *CFWS) / obs-year
Notice that "*" after the "4". That means 4 *or more* digits are allowed in
>I realize that some people might prefer "forever" but I think 5000 years
>should be good enough for this round of standard writing.
There is no reason to use 5000. Just say forever. It's simple to form UIDs
that last forever.
-- Pete Resnick <mailto:firstname.lastname@example.org> QUALCOMM Incorporated Work: (217)337-6377 or (619)651-4478 / Fax: (217)337-1980