[Pdns-users] positive cache-ttl on recursor

[ktm at rice.edu]

On Sat, Jun 11, 2011 at 07:08:54PM +0200, Marten Lehmann wrote:
> Hi,
> 
> I'm about to migrate from BIND named caching daemon to
> pdns-recursor, but I cannot find an equivalent for BINDs
> max-cache-ttl option.
> 
> While max-negative-ttl in pdns is the same as max-ncache-ttl in
> BIND, I cannot find an analog parameter for max-cache-ttl.
> Parameters that I found in different search results (ie. cache-ttl
> or packet-cache-ttl) seem to relate to the authoritative pdns only.
> 
> pdns-recursor is only used locally on several servers and as dns
> entries for our internal stuff and customer configurations might
> change more often then IPs of google.com, we want a positive cache
> ttl of 900, no matter what the authoritative dns told. How can we do
> this?
> 
> Kind regards
> Marten

According to the docs, the latest version of pdns-recursor also has
a max-cache-ttl parameter along with the max-negative-ttl.

http://doc.powerdns.com/built-in-recursor.html#recursor-settings

Cheers,
Ken