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Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,531 posts.

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2015
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Perceptual Image Compression at Flickr

At Flickr our users really care about image quality. They also care a lot about how responsive our apps are. Addressing both of these concerns simultaneously is challenging; higher quality images have larger file sizes and are slower to transfer. Slow transfers are especially noticeable on mobile devices. Flickr had…