AW: [squid-users] Client randomly reloads pages every second - cache/parent issue?

From: Stefan Bauer <stefan.bauer_at_cubewerk.de>
Date: Tue, 27 Nov 2012 08:53:33 +0100

-----Urspr√ľngliche Nachricht-----
Von: Amos Jeffries <squid3_at_treenet.co.nz>
Gesendet: Di 06.11.2012 13:31
Betreff: Re: [squid-users] Client randomly reloads pages every second - cache/parent issue?
An: squid-users_at_squid-cache.org;
> On 6/11/2012 10:39 p.m., Stefan Bauer wrote:
> > Dear Users/Developers,
> >
> > we're having the following squid structure in our environment:
> >
> >
> > Parent-Proxy1+2
> > |
> > DMZ
> > |
> > Child-Proxy1+2
> > |
> > |
> > Clients
> >
> >
> > We notice quite often the case where the client/browser is automatically
> starting to refresh a random page every second for unknown reasons.
> >
> > We're unsure if this is triggered by a wrong configuration or by a bug in the
> client itself.
> >
> > How can we debug this further?
>
> Squid has no control over the client/browser choice of when to
> re-request an object. The URL you presented results in a *private*
> response so both proxies are supposed to have nothing to do with it
> beyond network fetch and delivery.
>
> The URL also has several other major problems which could be screwing up
> the browser:
> http://redbot.org/?uri=http://www.mcseboard.de/windows-7-forum-76/kein-speichern
> -credentials-moeglich-win7-client-term-server2008-169219.html
>
>
> >
> > This is from the squid cache log:
> >
> > 1352194376.779 224 192.168.0.5 TCP_MISS/200 14432 GET
> http://www.mcseboard.de/windows-7-forum-76/kein-speichern-credentials-moeglich-w
> in7-client-term-server2008-169219.html miw
> ROUNDROBIN_PARENT/parentproxy1.intern.domain text/html
> > 1352194377.013 214 192.168.0.5 TCP_MISS/200 13900 GET
> http://www.mcseboard.de/windows-7-forum-76/kein-speichern-credentials-moeglich-w
> in7-client-term-server2008-169219.html miw
> ROUNDROBIN_PARENT/parentproxy1.intern.domain text/html
> > 1352194377.380 188 192.168.0.5 TCP_MISS/200 14173 GET
> http://www.mcseboard.de/windows-7-forum-76/kein-speichern-credentials-moeglich-w
> in7-client-term-server2008-169219.html miw
> ROUNDROBIN_PARENT/parentproxy2.intern.domain text/html
> > 1352194377.622 212 192.168.0.5 TCP_MISS/200 13900 GET
> http://www.mcseboard.de/windows-7-forum-76/kein-speichern-credentials-moeglich-w
> in7-client-term-server2008-169219.html miw
> ROUNDROBIN_PARENT/parentproxy2.intern.domain text/html
> >
> > We setup this in the child-proxies config:
> >
> > cache_peer parentproxy1.intern.domain parent 3128 0 round-robin no-query
> > cache_peer parentproxy2.intern.domain parent 3128 0 round-robin no-query
> >
> > Could this be the problem?
>
> I don't see any evidence of a problem in the proxies. It all appears to
> be browser and server issues.

Hi Amos & the mailing list,

sorry for my late response. thank you for your answer. Are you sure, it could not be caused by the round-robin option to the cache_peer parents?

I have reports from several departments that this was not happening with the single instance proxy we had previously.
now we have this random reloads of pages - causing for example several hundred thousand hits on some machines :/

thank you for your time

stefan
Received on Tue Nov 27 2012 - 07:51:12 MST

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