RE: Stale 404 cache on lists.w3.org

The caches seems to have sorted themselves out today and my link works again.

Never mind then (except for that potential of temporary denial of service); thanks if anyone helped! 😊

--
Stian Soiland-Reyes, eScience Lab
School of Computer Science, The University of Manchester
http://orcid.org/0000-0001-9842-9718


From: Stian Soiland-Reyes<mailto:soiland-reyes@manchester.ac.uk>
Sent: 17 October 2017 13:19
To: site-comments@w3.org<mailto:site-comments@w3.org>
Subject: Stale 404 cache on lists.w3.org

Hi,

I did the mistake of trying to link to (my own email from https://lists.w3.org/Archives/Public/public-scholarlyhtml/2017Oct/ by guessing the URL before it was listed, but now

https://lists.w3.org/Archives/Public/public-scholarlyhtml/2017Oct/0002.html returns wrongly “404 Not Found” and with cache headers

Etag: "72vu9g:1b6ra1nf8"
Expires: Fri, 12 Oct 2018 11:11:29 GMT
Last-Modified: Thu, 19 Jan 2017 12:08:34 GMT

Does this mean my email message (which was available from 11:11:51 GMT)  will be 404 for 12 months?


Testing with curl from a different machine on a different network gives same 404, http vs https the same.


Minting a slightly different URI like https://lists.w3.org/Archives/Public/public-scholarlyhtml/2017Oct/0002 or https://lists.w3.org/Archives/Public/public-scholarlyhtml/2017Oct/0002.html?foo however works, which gives:

< Etag: "1h3ak6r:1bsl0g2lo"
< Expires: Fri, 12 Oct 2018 11:12:28 GMT
< Last-Modified: Tue, 17 Oct 2017 11:11:51 GMT
< Server: Jigsaw/2.3.0-beta3


But of course these URIs are not in the mailbox index. How can I expire the cached resource on the server side?


Even a Force-Refresh in Chrome or with curl -H "Cache-Control: no-cache" does not work, which seems to me to be a violation of https://tools.ietf.org/html/rfc7234#section-4.2.4



This also seems to me to imply that someone with evil intent and a little for-loop could falsely 404 all future emails on w3c mailing lists... but I guess the cache would be expelled earlier by reboots or so.

--
Stian Soiland-Reyes, eScience Lab
School of Computer Science, The University of Manchester
http://orcid.org/0000-0001-9842-9718