[dns-operations] cache and subnet option
fweimer at redhat.com
Thu Apr 20 10:59:46 UTC 2017
On 04/20/2017 09:34 AM, Randy Bush wrote:
>>> [ to my naïve eye, issuing a second query would seem to have, shall
>>> we say, interesting scaling properties ]
>> It does and that is why it usually better to get the distribution
>> effect by placing resolvers near the edge of the network.
> is that not the same increase in global query load, just eminating from
> more resolvers?
It's worse because those resolvers would have separate caches for
infrastructure DNS records. I don't think those are treated as
subnet-dependent by a single, shared cache.
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