Facebook today published an explanatory post from engineers who worked on the popular “Look Back” feature the company launched as part of its 10th anniversary. The company revealed the project went from an imagined concept to a completed product in under a month. Here are a few interesting data points the company underlined: Over 720 million videos rendered, with 9 million videos rendered per hour. More than 11 petabytes of storage used. More than 450 Gbps outgoing bandwidth at peak and 4 PB egress within days. Over 200 million people watched their Look Back movie in the first two days,...

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