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Peer-to-peer
Description
Peer-to-peer computing or networking is a distributed application architecture that partitions tasks or work loads between peers. Peers are equally privileged, equipotent participants in the application. They are said to form a peer-to-peer network of nodes.
Peers make a portion of their resources, such as processing power, disk storage or network bandwidth, directly available to other network participants, without the need for central coordination by servers or stable hosts. Peers are both suppliers and consumers of resources, in contrast to the traditional client–server model where the consumption and supply of resources is always divided. Emerging collaborative P2P systems are going beyond the era of peers doing similar things while sharing resources, and are looking for diverse peers that can bring in unique resources and capabilities to a virtual community thereby empowering it to engage in greater tasks beyond those that can be accomplished by individual peers, yet that are beneficial to all the peers.
The first P2P distributed system platform was Pipes Platform by PeerLogic. One of PeerLogic's first licensees was Texas Instruments in 1993. While P2P systems were used in many application domains, the architecture was popularized by the file sharing system Napster, originally released in 1999. The concept has inspired new structures and philosophies in many areas of human interaction. In such social contexts, peer-to-peer as a meme refers to the egalitarian social networking that has emerged throughout society, enabled by Internet technologies in general.
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HIV is an epidemic in Washington, DC, where one out of every 30 people is infected. A community organization called "Metro TeenAIDS" is dedicated to helping young people in the US capital prevent the spread of HIV through non-traditional peer-to-p...