CoopNet content distribution system
CoopNet (Cooperative Networking), a system for off-loading serving to peers who have recently downloaded content, is described in the paper “The Case for Cooperative Networking”, presented at the First International Workshop on Peer-to-Peer Systems (IPTPS) in 2002. The system was proposed by computer scientists Venkata N. Padmanabhan and Kunwadee Sripanidkulchai, working at Microsoft Research and Carnegie Mellon University.
Basically when a server experiences an increase in load it redirects incoming peers to other peers who have agreed to mirror the content, thus off-loading balance from the server. All of the information is retained at the server. This system makes use of the fact that the bottle-neck is most likely in the outgoing bandwidth than the CPU, hence its server-centric design. It assigns peers to other peers who are 'close in IP' to its neighbors [same prefix range] in an attempt to use locality. If multiple peers are found with the same file it designates that the node choose the fastest of its neighbors.
- Padmanabhan, Venkata N.; Sripanidkulchai, Kunwadee  (2002). The Case for Cooperative Networking (PostScript with addendum) (&NDASH; SCHOLAR SEARCH). Lecture Notes in Computer Science. Proceedings of the First International Workshop on Peer-to-Peer Systems. Cambridge, MA: Springer (published March 2002). p. 178. doi:10.1007/3-540-45748-8_17. ISBN 978-3-540-44179-3.[dead link] PDF (Microsoft, with addendum) PDF (Springer, original, fee may be required)
- "CoopNet: Cooperative Networking". Microsoft Research. Project home page.
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