[dnsdist] Performance drop (cache hits) after changing configuration
Allan Willems Joergensen
allan at nowhere.dk
Thu Sep 25 14:22:56 UTC 2025
Hi,
A quick test confirms this, thanks! (and would also explain why my load
test didn't hit this issue)
--
Med venlig hilsten/kind regards
Allan Willems Joergensen -https://nowhere.dk
On 25.09.2025 12.58, Winfried via dnsdist wrote:
>
> Hi,
>
> On 9/25/25 11:42, Allan Willems Joergensen via dnsdist wrote:
>> With the new version (as with previous attempts), I am seeing a huge
>> drop in cache hit ratio - from >95% to <30% - and obviously I see a
>> similar increase in requests on the backend.
>
> I'm not sure, but maybe "use_client_subnet: true" in the new
> configuration is the reason why the queries are not cached if the
> cache is not ECS aware.
>
>
> Winfried
>
>
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