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Speed up your Internet browsing on Linux with a DNS Cache server

Mar 27, 2011, 03:02 (1 Talkback[s])
(Other stories by Pétur Ingi Egilsson)


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[ Thanks to Pétur Ingi Egilsson for this link. ]

"Your computer will need to lookup a website's IP address every time you visit it. The lookup request is passed on to the DNS server(s) specified in the /etc/resolv.conf file. It will take the server a few ms (milliseconds) at best to respond. It can take a 'long' time if your using a slow Internet connection (or a wireless LAN).

"Caching DNS acts just like a regular DNS, from the users point of view. The service is configured to respond to lookup requests and return IP addresses. If the Caching DNS does not know the answer to the request, he will simply forward the request to the correct server and then forward the reply to you once it has been received. So what's the difference?"

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