In Peer-to-peer (P2P) systems computers form an overlay network and share their resources (storage, CPU, bandwidth) to implement a service on top of the Internet. P2P computing has a great potential for creating systems that are self-organizing, efficient, and scalable, but it also faces many challenges: dynamic peer arrivals and departures, which may be correlated (e.g., flash crowd effects, or software failures), high variability of resources, and resource heterogeneity. This topic provides a forum for researchers to present new contributions to P2P systems, technologies, middleware, and applications that address key research issues and challenges.
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