Is there an option to prefetch for Nodelocal DNS Cache

[bennypea]

My current settings for cache is

    cache {
        success 9984 30
        denial 9984 5
    }

If I add the prefetch nothing seems to change.

    cache {
        success 9984 30
        denial 9984 5
        prefetch 1 30s 10%
    }

I cant see prefetched requested in the logs either. I have tested using it using serve_stale which works but is not what I am looking for. At the moment I am going off what is in here: https://coredns.io/plugins/cache/. Is there any documentation you can point me to to understand what I can and cant use for Nodelocal DNS Cache?

Has anyone else successfully used prefetch with nodelocaldns?

Thanks.

[firecow]

I would be very nice with a prefetching function, like unbound has, in node-local-dns, so our applications don't notice cache expirys.
We see an increase (5-10ms) in dns lookup time for the 99 percentile, when a record is expired and node-local-dns has to ask coredns.