This talk begins with the physics of network latency as explained in Cheshire’s famous paper “Its the Latency, Stupid.” Then I review the basic TCP algorithm and its history up to 1986, when the nascent internet experienced a series of congestion collapse events. I explain the nature of congestion collapse, and Jacobsen’s research which led to the creation of TCP slow start and congestion control in general. Finally I explain how TCP’s congenstion control algorithms impact web application latency, and give some general guidelines for application design that result from these observations.
John has been extracting value from large datasets for 15 years at companies ranging from hedge funds and small data-driven startups to retailing giant amazon.com. He has deep experience in the areas of personalization, business intelligence, website performance and real-time fault analysis. An empiricist at heart, John’s optimism and can-do attitude make “Just do the experiment!” his favorite call to arms.
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