RE: [squid-users] Problem with attachment updates

Try configuring the webserver (IIS) such that these documents cannot be
cache or have expiry period.

The task of maintaining content freshness should belongs to the webmaster
and not the proxy server administrator.

-----Original Message-----
From: Trigge, Graham [mailto:Graham.Trigge@team.telstra.com]
Sent: Tuesday, June 08, 2004 10:19 AM
To: squid-users@squid-cache.org
Subject: [squid-users] Problem with attachment updates

All,

Found an interesting "problem" which we can replicate and can't find a
solution. We are running Squid2.5 (Stable 5 on a Solaris 9 server) and
have a web site on IIS. The html page on the web server is basically a
link to a Word document on the web server (the page which showed this
error in the first place is more complex - this small site is for
testing purposes). When we click on the link, as expected, the document
opens.

The problem we have is that when we replace the document with a newer
version (same name) and try and access the file again the old version of
the file is returned. In the access.log and store.log it is being
treated as if the file has not been updated, and the cached version is
being returned. We have tried clearing out the local browser cache to no
avail. We have tried different browsers to no avail. We are running a
default installation (not much changed in the Squid.conf file in regards
to cache settings). These attachments change on a frequent interval, so
we need the latest always returned.

We have also tested this on a 2.5 Stable 3 implementation as well with
the same result. This tends to indicate it is a "feature", not a
"problem". Is this true? We are investigating looking at denying caching
DOC, XLS, HLP files etc. from the cache, but is this necessary? Is this
normal for this type of site?

Any assistance/questions/links to answers would be appreciated.

Regards,

---------------------------------
Graham Trigge
Telstra Australia
IT Technical Specialist
Messaging Support, Northern Region
W +61 2 8272 8657
M +61 409 654 434

"Time flies like an arrow, but fruit flies like a banana"
Received on Mon Jun 07 2004 - 23:41:53 MDT