Re: [squid-users] squid and php-sites

sorry, i misunderstood your first reply.
BUT:
i have a site test.php (without any php-code, just for testing the suffix)
on an apache server.
it sends this site only with the DATE-header. no lastmod, no expires. it
also does not mark the object as not cacheable.
so the refresh-pattern IS used, as you say.

so, first call:
echo -e "GET /test.php HTTP/1.0\nHost:myhost\n\n" | netcat squidserver 80
gives the file together with the above header (date)
second call:
echo -e "GET /test.php
HTTP/1.0\nHost:myhost\ncache-control:only-if-cached\n\n" | netcat
squidserver 80
it says: object is not in cache.

???
doing the same with a file test.html i see the lastmod header and it is of
course cached.

i still seem to miss some important point in understanding this, i guess.
but for me it seems as if the refresh-pattern is not used.

----- Original Message -----
From: "Henrik Nordstrom" <hno@squid-cache.org>
To: "alp" <alpheus@gmx.de>
Cc: <squid-users@squid-cache.org>
Sent: Friday, February 14, 2003 3:15 PM
Subject: Re: [squid-users] squid and php-sites

> As I said in the previous message: refresh_pattern IS USED for replies
> with no validation headers.
>
> Only if the content is EXPLICITLY MARKED AS NOT CACHEABLE (or NOT
> CACHEABLE) by the server is refresh_pattern not used by Squid.
>
> Regards
> Henrik
>
> alp wrote:
> >
> > thx henrik,
> >
> > is it possible to change squid's behaviour to use a refresh-pattern for
such
> > sites, too? (without changing the source code) I mean sites without any
> > validation headers.
> >
> > I know this may cause a lot problems, but it may also be useful
sometimes.
> >
> > ----- Original Message -----
> > From: "Henrik Nordstrom" <hno@squid-cache.org>
> > To: "alp" <alpheus@gmx.de>
> > Cc: <squid-users@squid-cache.org>
> > Sent: Friday, February 14, 2003 2:30 PM
> > Subject: Re: [squid-users] squid and php-sites
> >
> > > By default it does not. The RFC does not require either way as there
is
> > > explicit headers for instructing caches, but common sense recommends
not
> > > to as such pages are often dynamically generated by programs not aware
> > > of caching.
> > >
> > > The refresh patterns are used, but only if there is no headers denying
> > > the object from being cached.
> > >
> > > If unsure use the cacheability engine to check the status of the page
in
> > > question.
> > >
> > > Regards
> > > Henrik
> > >
> > >
> > > alp wrote:
> > > >
> > > > hi,
> > > > i am not sure if squid is required to not cache sites without
suitable
> > > > headers (lastmod, expires,...).
> > > > does anybody know?
> > > > it seems as if for such objects the refresh-patterns are NOT used in
> > > > squid.conf.
> > > > is this right?
> > > >
> > > > thx in advance,
> > > > alp
> > > >
> > > > ----- Original Message -----
> > > > From: "SSCR Internet Admin" <admin@sscrmnl.edu.ph>
> > > > To: "alp" <alpheus@gmx.de>
> > > > Cc: <squid-users@squid-cache.org>
> > > > Sent: Friday, February 14, 2003 1:11 AM
> > > > Subject: RE: [squid-users] question concerning php-sites and
> > caching -still
> > > > some questions
> > > >
> > > > > some sites dont want their pages to cached, so i guess squid will
> > > > eventually
> > > > > reload pages.
> > > > >
> > > > > -----Original Message-----
> > > > > From: alp [mailto:alpheus@gmx.de]
> > > > > Sent: Wednesday, February 12, 2003 11:01 PM
> > > > > Cc: squid-users@squid-cache.org
> > > > > Subject: Re: [squid-users] question concerning php-sites and
caching
> > > > > -still some questions
> > > > >
> > > > >
> > > > > thanks marc,
> > > > >
> > > > > i knowed this page already, it's a really nice one.
> > > > > but my problem is: does squid never caches an object without
> > validation
> > > > > headers (expires, max-age, lastmod,...)?
> > > > > if i have a refresh-pattern like
> > > > > refresh_pattern . 0 20% 5
> > > > > such an object should retain at most 5 minutes in cache, shouldn't
it?
> > > > > or is refresh_pattern only used if an object has validation
headers?
> > > > >
> > > > > thx in advance,
> > > > > alp
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Marc Elsen" <marc.elsen@imec.be>
> > > > > To: "alp" <alpheus@gmx.de>
> > > > > Cc: <squid-users@squid-cache.org>
> > > > > Sent: Wednesday, February 12, 2003 5:05 PM
> > > > > Subject: Re: [squid-users] question concerning php-sites and
caching
> > > > >
> > > > >
> > > > > >
> > > > > >
> > > > > > alp wrote:
> > > > > > >
> > > > > > > hi,
> > > > > > > i have on my webserver a simple php site which i query via
squid
> > 2.5.
> > > > > > > this works (of course) and i see that no last_modified or
> > > > expiry-header
> > > > > is
> > > > > > > replied, which is correct for dynamic sites, too, as far as i
know
> > > > > > > i have no cache_deny for php-sites and only the usual
> > refresh_patterns
> > > > > of
> > > > > > > default squid.conf.
> > > > > > >
> > > > > > > squid does not cache this php side (also ok), but my question
is:
> > why?
> > > > > > > is it hardcoded into squid not to cache php-sites, or is the
> > missing
> > > > of
> > > > > > > expiry and last_mod headers the reason for this?
> > > > > >
> > > > > > Most probably, you may,for instance check objects (urls)
> > > > > > with :
> > > > > >
> > > > > > http://www.ircache.net/cgi-bin/cacheability.py
> > > > > >
> > > > > > M.
> > > > > >
> > > > > > >
> > > > > > > thx in advance,
> > > > > > > alp
> > > > > >
> > > > > > --
> > > > > >
> > > > > > 'Time is a consequence of Matter thus
> > > > > > General Relativity is a direct consequence of QM
> > > > > > (M.E. Mar 2002)
> > > > > >
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Received on Fri Feb 14 2003 - 07:48:06 MST