Patch: Overriding no-cache from servers

I sent the following message earlier, and have since implemented a
solution. I have added a "ignore-no-cache" option to the refresh-pattern
configuration. I am currently using the following line for the problem
URLs mentioned below and a few others to force them to cache for 30
minutes:

   refresh_pattern /RealMedia/ads/ 30 20% 4320 ignore-no-cache

The patch is against Squid 2.2.STABLE4 and is located at:

   http://www.omdev.com/squid/squid-2.2.STABLE4.ignore-no-cache.patch

It's fairly simple, but I'd appreciate any comments, as this is my
first attempt at modifying Squid.

Dave

> I see by looking at the code that objects with a "Pragma: no-cache" tag
> are made unconditionally non-cacheable, even though that's not a valid
> header coming from a server. I would like to be able to override this,
> has anybody looked at good ways to do it? I almost pulled it right
> out, since it shouldn't been happening anyway, but I got rational and
> didn't.
>
> Specifically, I get 70,000+ TCP_MISSes on 6-7K objects from weather.com
> every day, and none of them ever change, but they all com tagged with
> "no-cache". I wouldn't mind saving the 50 megabytes/day by assigning
> these requests some kind of refresh rule instead. I don't necessarily
> mind doing the code myself, but am looking for ideas on how to do it
> cleanly.
Received on Sat Sep 11 1999 - 00:48:47 MDT