Autour du pair-à-pair : distribution de contenus, réseaux à préférences acycliques

Peer-to-peer (P2P) recently emerged as a new paradigm in computer science. Due to majoreconomic and social stakes, mostly related to content distribution, P2P has brought back to theforefront many existing research elds related to distributed systems, providing new incentivesand goals.In this work, we give some keys to the understanding of the research elds related to P2Psystems. After a brief survey of our work on content distribution, we consider a more theoreticalsubject : acyclic preference-based systems, which recently appeared as an elegant way to modelmany P2P unstructured or hybrid systems. The strength of these models is a self-stabilizingproperty that allows us to provide analytical results in addition to empirical validation.