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Exploiting Locality of Interest in Online Social Networks

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Executive Summary

Online Social Networks (OSN) is fun, popular, and socially significant. An integral part of their success is the immense size of their global user base. To provide a consistent service to all users, Facebook, the world's largest OSN, is heavily dependent on centralized U.S. data centers, which renders service outside of the U.S. sluggish and wasteful of Internet bandwidth. In this paper, the authors investigate the detailed causes of these two problems and identify mitigation opportunities. Because details of Facebook's service remain proprietary, they treat the OSN as a black box and reverse engineer its operation from publicly available traces.

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