John has worked in systems operations for over fourteen years in biotech, government and online media. He started out tuning parallel clusters running vehicle crash simulations for the U.S. government, and then moved on to the Internet in 1997. He built the backing infrastructures at Salon, InfoWorld, Friendster, and Flickr. He is now VP of Tech Operations at Etsy, and is the author of The Art of Capacity Planning published by O’Reilly.
Steve is Chief Performance Officer at Fastly developing web performance services. He previously served as Google’s Head Performance Engineer and Chief Performance Yahoo!. Prior to that Steve worked at General Magic, WhoWhere?, and Lycos, and co-founded Helix Systems and CoolSync. Steve is the author of High Performance Web Sites and Even Faster Web Sites. He is the creator of many performance tools and services including YSlow, the HTTP Archive, Cuzillion, Jdrop, ControlJS, and Browserscope. He serves as co-chair of Velocity, the web performance and operations conference from O’Reilly, and is co-founder of the Firebug Working Group. He taught CS193H: High Performance Web Sites at Stanford.
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