An analysis of Facebook photo caching
Every day people upload more than 350 million photos to Facebook (as of Dec 2012) and view many more in their News Feeds and on their friends’ Timelines. Facebook stores these photos on Haystack machines that are optimized to store photos. But there is also a deep and distributed photo-serving stack with many layers of caches that delivers photos to people so they can view them. We recently publis
Needle in a haystack: efficient storage of billions of photos
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https://jp.techcrunch.com/2009/04/07/20090406facebook-completes-rollout-of-haystack-to-stem-losses-from-massive-photo-uploads/
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