Ryosuke Iwanga gave a presentation about fighting big data at Mobage DBA. He discussed how Mobage grew from 600 million page views per day in 2006-2008 to over 2 billion page views per day with the introduction of social games in 2009-2010. He defined big data as having over 500 database servers, storing over 100TB of data, and handling over 1 million queries per second at peak times. He described