Re: cache not up to date

In message <9606181607.AA01247@potica.kud-fp.si> Luka Frelih writes:

>> >I use Squid beta17 on a DEC OSF machine. Our old cache is a CERN
>> >3.0 on anothe
>> Note, there is no "Expires" or "Last-Modified" line. Without those,
>> Squid chooses a default TTL, maybe one week. If you want this page

>Does anybody know how CERN cache manages to deliver updated
>content? Does it use HEAD queries or some other conditional GET
>mechanism on the server? And of course, how this affects its
>performance against the squid cache?

>L

CERN cache uses IMS GET requests for updating expired pages.
It can keep expired pages from deleting by gc.
That significantly improves performance.

I think Squid doesn't behave that way.

Roman.

-- 
Roman Pozlevich              e-mail: roma@botik.ru
http://www.botik.ru/~roma    tel: +7 (08535) 98044, fax: +7 (08535) 98278