Hi David, On Jan 4, 2012, at 12:31 , David Saez wrote:
> Hi > > so, for every request, powerdns does not a CNAME databse lookup and then a A > database > lookup if it did notr find the CNAME record, right ? > > if this is true and your zones contain more A records than CNAME records , > then most of > the CNAME databse lookups are useless (and take valuable resources), for > those cases > it's possible to save those lookups by: > > a) first do the A lookup and the then CNAME lookup > > or > > b) allow hostnames in the A record and when found return a CNAME For every request, PowerDNS does an ANY database lookup. If there's a CNAME in there, it follows the chain; if there's an A in there, it's done. There are only extra queries *if* the first ANY lookup yields a CNAME. So, PowerDNS already does something better than suggestion (a). Kind regards, Peter van Dijk Netherlabs _______________________________________________ Pdns-dev mailing list [email protected] http://mailman.powerdns.com/mailman/listinfo/pdns-dev
