Firefox and DNS prefetching – I read about this being a feature in Google Chrome, but I wasn’t sure if it was, yet, a feature of Firefox. It is in Ff 3.5. Here you can find a list of the new features in Firefox 3.5.

What is DNS prefetching? – It is the process of requesting domain name and IP (Internet Protocol or Intellectual Property) address resolution used in links, images, documents and other content linked to from a page a web surfer is currently browsing. Theoretically, by taking care of the name resolution before a surfer desires to navigate to a file or another page from a link on the current page can save fractions to X number of seconds. Name resolution being out of the way the surfer should arrive at its next destination faster. The former is my definition and understanding of DNS prefetching. In my experience, at leased in Google Chrome, I am able to see performance improvements.

I needed to know how can I tell if it is on or off. In Google Chrome it is in the options menu and it can easily be turned on and with a simple check-mark click.

Google Chrome DNS prefetching option.

But, in Firefox this is not a function in the options menu. At leased not at this time.

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