Over the past two years, Facebook’s cooperation with browser vendors Google Chrome and Mozilla Firefox has dramatically improved web page reload speeds, according to the company.
As Google’s senior software engineer Takashi Toyoshima notes in his blog post, page validation requests between browsers and web servers can cause serious performance issues on mobile devices, such as battery drain.
At the onset of its research, Facebook found that Chrome was sending page validation requests at three times the rate of other browsers. Although this process didn’t result in any additional data being transferred to the user’s device, it was deemed a futile technique that was bogging down page refresh times. Once Chrome simplified its reload behavior to only validate the main resource on a page, it resulted in 60 percent less validation requests.
“Every time a user logged in to Facebook the [Chrome] browser ignored its cache and revalidated all the previously downloaded resources,” said Facebook Code team members Ben Maurer and Nate Schloss in a blog post.
Referring to the broader impact of the change on websites, Toyoshima said: “We hope this faster reload will come in handy whenever you want to get the latest content on your favorite website or quickly recover from a flaky connection in the subway.”
Testing out the change on mobile with a 3G connection, the Chrome team found that the reload rate was 1.6 seconds faster across all websites.
Similarly, Firefox implemented a cache-control feature on the most recent version of its browser on the back of a Facebook proposal. The change saw a reload generate just 25 network requests from a Facebook page, which can typically contain around 150 different resources. According to Patrick McManus, principal engineer at Mozilla Firefox, the change cut page reloading times in half.
McManus adds that other developers are adopting the feature, too, with the BBC revealing that page refresh times have improved by 50 percent. Facebook claims that the research conducted with Chrome and Firefox “highlights how web browsers can, and do, work with web developers to make the web better for everyone.”
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