“Peer-to-peer” (P2P) is synonymous with piracy and bandwidth hogging on the Internet. But now, Internet service providers and content companies are taking advantage of technology designed to speed the delivery of content through P2P networks. Meanwhile, standards bodies are working to codify the technology into the Internet’s basic protocols.
Rather than sending files to users from a central server, P2P file-sharing networks distribute pieces of a file among thousands of computers and help users find and download this data directly from one another. This is a highly efficient way to distribute data, resistant to the bottlenecks that can plague centralized distribution systems, but it uses large amounts of bandwidth. Even as P2P traffic slowly declines as a percentage of overall Internet traffic, it is still growing in volume. In June, Cisco estimated that P2P file-sharing networks transferred 3.3 exabytes (or 3.3 billion trillion bytes) of data per month.
While a PhD student at Yale University in 2006, Haiyong Xie came up with the idea of “provider portal for peer-to-peer,” or P4P, as a way to ease the strain placed on networking companies by P2P. Continued at Technology Review.
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