Re: [squid-users] Refresh pattern

From: Henrik Nordstrom <hno@dont-contact.us>
Date: Sun, 12 May 2002 23:45:32 +0200

The \ should be there. The difference between \.gif$ and .gif$ is
subtle.

  \. matches a dot
  . matches any character

To see why something is not being cached, see the cacheability check
engine, linked from www.squid-cache.org.

Regards
Henrik

On Sunday 12 May 2002 23:11, schazad choudary wrote:
> Thanx Henrik I have implement this,
>
> refresh_pattern -i \.gif$ 1440 50% 177800
> will it work or i need to change it to
>
> refresh_pattern -i .gif$ 1440 50% 177800
>
> coz i have observed that some gifs i open every time
> ,even again and again in one mine access.log show MISS
> every time
>
> why ?
>
> regrads'
>
> --- "Squid Support (Henrik Nordstrom)"
>
> <hno@marasystems.com> wrote:
> > refresh_pattern is used to calculate the TTL of
> > objects not having an
> > explicit expiry time set by the origin server.
> >
> > min is the minimum age assigned by this heuristics
> >
> > max is the maxium age assigned by this heuristics
> >
> > percent is a percentage of the objects modification
> > age (Date -
> > Last-Modified).
> >
> > Objects having an explicit expiry time set by the
> > server are not
> > concerned with refresh_pattern unless you use one of
> > the hack options
> > to override what the server says.
> >
> > Using any of the hack options for overriding the
> > HTTP specifications,
> > or a min age other than 0 is not recommended unless
> > you are certain
> > you can accept the effects. The effect can easily
> > include caching of
> > content intended to be private to specific users
> > when the site is
> > using cookies or similar user identification methods
> > and don't tell
> > in the response that the reply is user private. This
> > problem can
> > commonly be seen for example with PHP based sites
> > when having a too
> > agressive refresh_pattern setting.
> >
> > Regards
> > Henrik Nordström
> >
> > On Sunday 12 May 2002 05:13, schazad choudary wrote:
> > > This time i need a reall help from u,I am stuc
> >
> > with my
> >
> > > bandwidth ,
> > >
> > > I am setting up refresh pattern to save my
> >
> > bandwidth
> >
> > > ,i am not much concern if some of the objecs are
> > > outdated.But still i am not clear in concept after
> > > reading agiain and agin teh faqs and seraching
> >
> > from
> >
> > > differnt sites , i am not clear about the
> >
> > percentage.
> >
> > > tell me please if i am wrong.
> > >
> > >
> > > min is the simple time before that squid will not
> >
> > ask
> >
> > > for fresh copy of saved object
> > >
> > > maximum is the time after that squid will must ask
> >
> > for
> >
> > > fresh copy. right ?
> > >
> > > what actully the percentage do ???
> > >
> > > 2nd :I am running Isp network wich option is
> >
> > better
> >
> > > for me to use please please specify one which is
> >
> > most
> >
> > > commonly used.
> > >
> > > override-expire
> > > override-lastmod
> > > reload-into-ims
> > > ignore-reload
> > > I will be too much thank full to u people .
> > > regards
> > > Schahzad Zafar
> > >
> > > __________________________________________________
> > > Do You Yahoo!?
> > > LAUNCH - Your Yahoo! Music Experience
> > > http://launch.yahoo.com
> >
> > --
> > MARA Systems AB, Giving you basic free Squid support
> > Your source of advanced web reverse proxying
> > solutions
> > http://www.marasystems.com/producs/
>
> __________________________________________________
> Do You Yahoo!?
> LAUNCH - Your Yahoo! Music Experience
> http://launch.yahoo.com
Received on Sun May 12 2002 - 15:55:19 MDT

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