Re: [SQU] Squid doesn't download updated sites

As far as I know...there is a documented problem with refresh and IE ewhich is resolved in 2.4-PRE-STABLE with the ie_refresh tag.

Awais

Robert Collins wrote:

> Hi fabian,
> squid's refresh pattern is used when squid needs to _guess_ the expiry time for an object. The pattern you quote below of 0 20%
> 4320, for an object 1 day old will result in cache hits for 4.8 hours. (20% of the age of the object).
>
> After 4.8 hours squid will send the request upstream as a IMS (if modified since) request.
>
> The EXPIRES header simply lets sites tell squid rather than it guessing.
>
> If hitting refresh in your browser doesn't work (this should get squid to send a IMS request even if less than the hit time (in this
> example 4.8 hours) has passed) then you may be getting bittn by the following:
>
> There are issues with 'transparent' caching, if you are using that then that is almost certainly the issue. Try configuring your
> browser with the proxy set manually. You may find that fixes your issue.
>
> Rob
>
> ----- Original Message -----
> From: "Fabian Krämer" <fabian.kraemer@VITODATA.CH>
> To: <squid-users@ircache.net>
> Sent: Tuesday, February 06, 2001 5:19 PM
> Subject: WG: [SQU] Squid doesn't download updated sites
>
> Hi Martin,
>
> I don't blame squid, it's just a question.
> By the way:
> before I posted this messages to the group a cleared the local cache of my
> IE. The problem is still appearing!
> I guess I have this problem because the provider of this site doesn't
> support the EXPIRE variable for this site. So squid have to wait the MAX_AGE
> timer (in this case 72 hours) until it's reloading the page.
>
> Greetings from Switzerland
> Fabian
>
> -----Ursprüngliche Nachricht-----
> Von: Martin A. Brooks [mailto:martin@hinterlands.org]
> Gesendet: 02.02.2001 22:32
> An: Fabian Krämer; 'squid-users@ircache.net'
> Betreff: Re: [SQU] Squid doesn't download updated sites
>
> At 14:40 05/02/01 +0100, Fabian Krämer wrote:
> >Hi,
> >
> >I've installed Squid 2.3 Stable 2.
> >The problem I have is that squid doesn't download updated html-sites. We
> >have posted modifications to a site hosted by a provider. If we want
> >access this site by squid we can only see the old site (without the
> >modifications).
> >It seems that squid looks for site changes only every 72 hours like set in
> >"refresh_pattern 0 20% 4320".
> >Squid doesn't notice that the sites were modified.
>
> Many browsers cache webpages independently of the Squid cache itself. The
> worst culprit for this is IE, which often caches pages despite setting it's
> cache size to 0, forcing (in theory) a per-instance check and saying never
> ever /ever/ EVER cache anything, /EVER/. :)
>
> It might be worth checking this out before blaming Squid. Check it, /then/
> blame Squid :)
>
> Regards
>
> Martin A. Brooks
> ------------------------------------------------------
> If Windows NT were an animal, it'd be a fainting goat.
>
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