Re: [squid-users] How does Squid prevent stampeding during a cache miss?

Thank you Henrik. I have one last question concerning
stale-while-revalidate, as the docs don't seem to answer it.

Say you set stale-while-revalidate to something like 30 minutes. Once
validation occurs, does squid continue to serve the stale content for
30 minutes (even though the object has infact been updated), or will
all new requests immediately be served the new, updated object?

2010/8/2 Henrik Nordström <henrik_at_henriknordstrom.net>:
> sön 2010-08-01 klockan 11:52 -0400 skrev david robertson:
>> On Sun, Aug 1, 2010 at 1:12 AM, Amos Jeffries <squid3_at_treenet.co.nz> wrote:
>> > If stampeeding is a worry the stale-if-error and stale-while-revalidate
>> > Cache-Control: options would also be useful (sent from the origin web
>> > server). These are supported by 2.7.
>>
>> Question - why aren't these options documented anywhere?  Also, why
>> can't we set this in squid itself, rather than messing with
>> Cache-Control headers?
>
> You can override them from squid.conf as well. But it's recommended to
> use Cache-Control if possible as this places the configuration where it
> really belongs and can best be controlled at the desired detail.
>
> http://www.squid-cache.org/Versions/v2/2.7/cfgman/refresh_pattern.html
>
> Regards
> Henrik
>
>
Received on Tue Aug 03 2010 - 16:12:05 MDT