Link Prefetching

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Sunday, May 6. 2007

Phil Windley writes about a bug in Firefoxes implementation of link prefetching. What I find most interesting is that I hadn't been aware that Firefox did anything like this and yet it seems to have supported it for a long time.

From the prefetch FAQ:

Link prefetching is a browser mechanism, which utilizes browser idle time to download or prefetch documents that the user might visit in the near future. A web page provides a set of prefetching hints to the browser, and after the browser is finished loading the page, it begins silently prefetching specified documents and stores them in its cache. When the user visits one of the prefetched documents, it can be served up quickly out of the browser's cache.

Pete Freitag points out that Google uses this technique in their search results to preload the first returned item. So if the result you wanted was the first one in the list, the page will appear to load faster.

Technorati tags: firefox prefetch

Posted by Mike Bowler in Technology at 09:43

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