Linux Gazette: Speeding Up Your Net Browsing with PDNSD Domain Name CachingApr 08, 2001, 19:00 (11 Talkback[s])
(Other stories by Sunil Thomas Thonikuzhiyil)
"DNS is is the Domain Name System. DNS converts machine names to the IP addresses that all machines on the net have. Name serving on Unix is commonly done by a program called named. This is a part of the ``BIND'' package which is coordinated by Paul Vixie for The Internet Software Consortium."
"PDNSD is a caching DNS proxy server. Unlike BIND, it saves the RAM cache to a file and the same is read up by PDNSD for the next Dial-Up session. BIND when acting as a cacheing nameserver on your local Dial-Up machine stores/caches the name to number translation data in your RAM. This is not written back to the hard-disk upon disconnection 'coz it is not intended for a user/site who/which is not always connected to the Net."
"PDNSD can be configured to speed up Net Surfing on a Dial-Up connection. Since DNS resolution is referenced from the cached file, time is not wasted on the name to number lookup. This in turn speeds up the name to number translation, which actually accelerates your surfing."