Peers

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Peer-to-Peer Applications
Peer-to-Peer Applications

The applications explained in this section so far - including the Web, e-mail, and DNS - all employ client-server architectures with significant reliance on always-on infrastructure servers. Recall from Network Application Architectures that with a P2P architecture, there is minimal (or

Tags peers, service provider, download rate, distribution time, internet core
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Distributed Hash Tables (DHTs)
Distributed Hash Tables (DHTs)

An important element of many P2P applications and other distributed applications is an index (that is, a simple database), supporting search and update operations. When this database is distributed, the peers may carry out content caching and complicated routing of queries among

Tags index, distributed applications, peers, p2p database
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Circular DHT
Circular DHT

To deal with this problem of scale. let's now look at organizing the peers into a circle. In this circular arrangement, each peer only keeps track of its immediate successor (modulo 2n). An instance of such a circle is shown in Figure 1(a). In this instance, n is again 4 and there are

Tags peers, successor, identifier, dht, overlay network, routers, circular overlay
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Case Study: P2P Internet Telephony with Skype
Case Study: P2P Internet Telephony with Skype

Skype is an immensely popular P2P application, often with seven or eight million users connected to it at any one time. Besides providing PC-to-PC Internet telephony service, Skype offers PC-to-phone telephony service, phone-to-PC telephony service, and PC-to-PC video

Tags nodes, relays, router, peers, packets, p2p application, protocol
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