Unexplained Cache MISSes

[Dridi Boukelmoune]

On Sat, May 27, 2017 at 9:30 PM, Nigel Peck <np.lists at sharphosting.uk> wrote:
>
> Just another update on this, regarding how reliably I can reproduce. I have
> now updated my code for purging the cache, so it reports which purged
> objects received a HIT when they were retrieved with the restarted request
> after the purge, and it happens every time I purge a significant number of
> items from the cache, perhaps 10% of them or something like that. So I can
> reproduce reliably.

Dunno how you define "which purged objects received a HIT" but I would
enable Hash records to be able to compare them in the logs to first
make sure they actually are the same.

See man varnishd, look for vsl_mask.

Dridi