Sudden hit_for_pass

Norberto Meijome numard at
Fri Aug 2 00:53:21 CEST 2013

Has your backend code changed, and cookies or other headers being sent back
On 01/08/2013 1:05 AM, "James Harrison" <james at> wrote:

> Hi,
> I have a varnish server sat in front of a website which was previously
> sitting at 60% hitrate, no hit_for_pass. With no configuration change
> aside from adding a single ban rule (which I have since removed) keyed
> to a hostname the site runs (but which accounts for a tiny fraction of
> the traffic), this has gone to 1% hitrate, 99% hit_for_pass. Headers
> being sent out suggest caching is still behaving as expected but the shm
> tools all report this high hit_for_pass rate. Looking at the number of
> objects, there's now nothing but object heads in the store.
> Any thoughts on what could be going on here?
> --
> Cheers,
> James Harrison
> _______________________________________________
> varnish-misc mailing list
> varnish-misc at
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