Re: [squid-users] What to do if no expire info received from server

Dirk Taggesell wrote:
> Hi folks,
>
> there's a web-server, that sends no info about caching or expiry of
> documents. That is the http header received while fetching a flash applet:
>
> HTTP/1.x 200 OK
> Date: Fri, 09 Nov 2007 15:26:46 GMT
> Server: Jetty/5.1.x (Mac OS X/10.4.9 i386 java/1.5.0_07
> Content-Type: application/x-shockwave-flash
> Content-Length: 60749
> Last-Modified: Wed, 07 Nov 2007 14:18:36 GMT
> Accept-Ranges: bytes
>
>
> Does this violate the http standard? Is a web-server required to send
> infos about document lifetime along with a document?
>
> Thanks for helping me.
>

Max-Age and Expires are optional headers. Squid uses a percentage of
the objects age (calculated from the Last-Modified date) to determine
object freshness.

See
http://wiki.squid-cache.org/SquidFaq/InnerWorkings#head-42f0582290981fb15dd7d7edd3d42ae8c52fa317
for more details.

Chris
Received on Fri Nov 09 2007 - 13:46:38 MST