BIND and AD DNS

[Kevin Darcy]

Hmmm... Well it would depend on the relative TTLs of the NS records and 
the "leaf node" records, but yes, there is caching of both types of 
records and obviously, if an answer is in cache, and not expired, 
there's no need to go and fetch the data from anywhere else...

                                                                         
                              - Kevin


Niall O'Reilly wrote:
>
> On 10 Jan 2008, at 03:12, Kevin Darcy wrote:
>
>> Iterative resolvers will see the delegation, and
>> subsequent queries for names in the domain will use the Microsoft DNS
>> servers, for as long as that delegation information persists in the
>> iterative resolver's cache.
>
>     I think you mean,
>
>     "Iterative resolvers will see the delegation, retrieve the
>      relevant RRset (answer) from the Microsoft DNS servers, place
>      it in cache, deliver it to the querying client, and avoid
>      querying the Microsoft DNS servers for the same RRset until
>      the cached copy has expired."
>
>     No ?
>
>
>
>     Best regards,
>
>     Niall O'Reilly
>     University College Dublin IT Services
>
>     PGP key ID: AE995ED9 (see www.pgp.net)
>     Fingerprint: 23DC C6DE 8874 2432 2BE0 3905 7987 E48D AE99 5ED9
>
>
>