Re: [squid-users] Squid is caching the 404 Error Msg...

On Mon, 08 Nov 2010 16:15:24 +0200, karj <gkaragiannidis_at_dolnet.gr> wrote:
> Dear Expert,
>
> I'm using:
> - Squid Cache: Version Squid Cache: Version 2.7.STABLE9
>
> My Problem is.
>
> When i'm using
> Cache-Control headers in the origin iis ( post-check=3600,
> pre-check=43200 )
>
> Squid is caching the 404 Error Msg.
>
> In the first two or thre requests i have
> TCP_MISS:FIRST_UP_PARENT ---> squid goes back to origin server
>
> After while i'm getting
> 404 926 TCP_NEGATIVE_HIT:NONE ---> squid servers 404 from it's cache
>

Check that you have "negative_ttl 0 seconds" configured. 2.x has a wrong
default of some minutes.

>
> I don't want to cache Error Msgs.
> Error Msgs should never be cached.
> How can I do that.?

If the above setting is correctly at 0 seconds already, check the web
server provided headers.
4xx messages CAN be cached in a lot of cases, but it should be up to the
origin site to specify correctly when.

Amos
Received on Tue Nov 09 2010 - 02:07:44 MST