You might have noticed that your Facebook News Feed is faster than it used to be on your iPhone or iPad. You're not crazy.

Facebook has made the News Feed operate 50% faster than the previous version in the iOS app, according to the company.

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About two years ago, Facebook switched from HTML5 to native iOS code to make the app perform as smoothly as possible. But the developers noticed something strange: Each time the app updated, it would take longer for the News Feed to load. And gradually, users started noticing, too.

"As we added more and more features to the app, every part of the app got slower," Adam Ernst, a software engineer at Facebook's New York office, told Mashable.

The slower speeds were associated with a data storage problem in Facebook's app. In most iOS apps, data models are managed by "core data," but there was a quirk in the Facebook iOS app's system. The core data originally worked with only a few dozen code entities, but that number escalated to hundreds.

The engineers developed a different way to store data that significantly cut back on the app's inner workings, which resulted in a much faster News Feed. The software developers began rolling out the rewrite publicly this summer. Facebook is promising to keep rolling out improvements to the News Feed's performance.

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