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Re: age in the refresh_pattern

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--- On Sat, 7/4/09, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote:

> From: Amos Jeffries <squid3@xxxxxxxxxxxxx>
> Subject: Re:  age in the refresh_pattern
> To: "Stand H" <hstandit@xxxxxxxxx>
> Cc: squid-users@xxxxxxxxxxxxxxx
> Date: Saturday, July 4, 2009, 10:59 PM
> Stand H wrote:
> > 
> > 
> > --- On Thu, 7/2/09, Amos Jeffries <squid3@xxxxxxxxxxxxx>
> wrote:
> > 
> >> From: Amos Jeffries <squid3@xxxxxxxxxxxxx>
> >> Subject: Re:  age in the
> refresh_pattern
> >> To: "Stand H" <hstandit@xxxxxxxxx>
> >> Cc: squid-users@xxxxxxxxxxxxxxx
> >> Date: Thursday, July 2, 2009, 7:15 PM
> >> Stand H wrote:
> >>> Hi,
> >>> 
> >>> 
> >>>         FRESH if
> expires
> >> < now, else STALE
> >>>         STALE if
> age
> >>> max
> >>>         FRESH
> if
> >> lm-factor < percent, else STALE
> >>>         FRESH if
> age
> >> < min
> >>>         else
> STALE
> >>> 
> >>> Can someone show how to calculate the age
> here? Is it
> >> age=Now-LM or age=time since the object stored in
> the
> >> cache?
> >> Age = time in seconds since value of Date: header
> received
> >> with the Object.
> >> 
> >> Date: header in future are cropped to NOW.
> >> 
> >> Amos
> >> -- Please be using
> >>   Current Stable Squid 2.7.STABLE6
> or 3.0.STABLE16
> >>   Current Beta Squid 3.1.0.9
> >> 
> > 
> > Thanks, Amos.
> > 
> > I am confused when I read this thread http://www.squid-cache.org/mail-archive/squid-users/200710/0680.html
> > 
> > I think the max still can be used even the response
> has no LM header. Can you clarify?
> 
> No, I don't know whats going on inside your head so I can't
> explain what you are thinking of.


I mean even the response has no LM header the 'max' still can be use with "STALE if age > max" because the LM header is not used to calculate the 'age'



> 
> Yes, The answer that came out does match the algorithm you
> are talking about.
> 
> > 
> > What if the response Date header is one day behind
> NOW? Is the response 1 day one by the time it reach the
> Cache?
> > 
> 
> Yes. Exactly.  Date: is supposedly when the object was
> last sent from the web server.
> If its already saying 1 day old, then the object is
> supposedly 1 day old and should be treated as such during
> the calculation.
> 
> 
> Amos
> -- Please be using
>   Current Stable Squid 2.7.STABLE6 or 3.0.STABLE16
>   Current Beta Squid 3.1.0.9
> 


Thanks.

ST


      


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