One of the most frequently mentioned benefits of Google Chrome is the ability of the browser to load web pages at lightning speed. You usually don’t have to wait for a page to load; just click a link, and the page is there.
The speed with which pages are delivered to you in Chrome is made possible by a feature called DNS pre-fetching. It’s how Chrome prepares pages to load quickly. When you go to a web site using a normal browser, the browser must “resolve” the domain (web address) that you seek; it translates the .com address into an IP address, such as 126.96.36.199. This process can take time, ranging from milliseconds to several seconds (in case of a timeout).
Chrome, unlike other browsers, anticipates your next move. While that sounds mystical, the truth is that this feature is most effective when you contact a web site through a page in the web browser and not by manually entering a web address.
When you open a web page in Chrome, the DNS pre-fetching feature scans the contents of your page for hyperlinks pointing to another web site. In anticipation of your next move, Chrome resolves these DNS address while you are on the web page, but before you click a hyperlink. This prevents you from having to wait once you click the hyperlink; the page loads almost instantly, and the amount of time that saves over the course of a day can be significant.
If you have any doubts about the efficiency of this feature, just type “about:dns” in the address bar in Chrome, and you’ll see a full display of time saved using this feature.
Jerri Ledford (pictured) has been a freelance business technology writer for more than ten years, publishing more than 1,000 articles, profiles, news stories, and reports. She develops and teaches technology training courses on topics ranging from security to customer service. Ledford also helps optimize websites for Google and writes about technology topics ranging from search engine optimization to consumer security and identity theft. She has written 18 books, four of which are about Google applications.
Yvette Davis is Managing Editor for Brighthub.com’s Google Channel and Contributing Editor for its Linux Channel
Kerrie's latest book, System Center Configuration Manager (SCCM) 2007 Unleashed by Kerrie Meyler, Byron Holt, and Greg Ramsey has been selected as the August, 2009, Microsoft Subnet book giveaway (a $59.99 value). Visit the Google Subnet home page for giveaway details and entry forms.