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In this paper, we propose a general framework and present a prototype implementation of peer-assisted content delivery application. Our systemcalled Cyclops -dynamically adjusts the bandwidth consumed by content servers (which represents the bulk of content delivery costs) to feed a set of swarming clients, based on a feedback signal that gauges the real-time health of the swarm. Our extensive evaluation of Cyclops in a variety of settingsincluding controlled PlanetLab and live Internetdoi:10.1016/j.comnet.2012.02.011 fatcat:kd5hc2z5pnc3xpatgj66znpoo4