Re: Identifying and mitigating an unknown performance bottleneck
Not sure that focusing on DNS resolving is going to make much difference, in theory the root name servers and all the other DNS servers cache lookup results and typically only visit a SOA server once every 24 hours to update so once servers have cached results the registrar or primary dns servers play little part in things This depends on how you are managing things I guess, does your parked domain use the registrars DNS servers or do you reference another DNS server? you might want to try pointing your domain name to a different DNS server, try using ZoneEdit which allow up to 2? free records.
Yesterday was the first time I visited your site (therefore neither I nor probably my ISP had a cached record of the IP) and my request resolved quickly so somewhere along the route a cached copy of the records were found and used, I also found the site fast and responsive but then again that is not a true test as you have that cache plugin running – out of interest have you disabled that to see whether it makes a difference, it’s not interfering in some manner, I believe that in certain configurations it can cause issues.
