How Tumblr went from wee to webscale

GigaOM: Tumblr, the popular microblogging service is hitting 500 million page views a day, deals with 40,000 requests per second and sends more than a terabyte of data into its Hadoop cluster per day. But it wasn’t always a superhot startup that needed to serve 15 billion page views a month, and the story of how it morphed from wee to webscale makes a great case study over at High Scalability.

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