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Peer-to-peer

Type of decentralized and distributed network architecture / From Wikipedia, the free encyclopedia

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Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or workloads between peers. Peers are equally privileged, equipotent participants in the network. This forms a peer-to-peer network of nodes.[1]

P2P_network.svg
A peer-to-peer (P2P) network in which interconnected nodes ("peers") share resources amongst each other without the use of a centralized administrative system
Server-based-network.svg
A network based on the client–server model, where individual clients request services and resources from centralized servers

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.[2] Peers are both suppliers and consumers of resources, in contrast to the traditional client–server model in which the consumption and supply of resources are divided.[3]

While P2P systems had previously been used in many application domains,[4] the architecture was popularized by the file sharing system Napster, originally released in 1999.[5] 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.