In this paper, we are concerned with the distributed monitoring of P2P systems. We introduce the P2P Monitor system and a new declarative language, namely P2PML, for specifying monitoring tasks. A subscription is compiled into a distributed algebraic plan which is described using an algebra over XML streams. We introduce a lter for streams of XML documents that scales by processing rst simple c...

With advances in the broadband Internet access technology and the coding techniques, video streaming services have become increasingly popular. Traditionally, video streaming services are deployed in the client/server architecture. However, this centralized architecture cannot provide streaming to a large population of users due to the limited upload capacity from the server. Peer-to-Peer (P2P)...

Structured peer-to-peer (P2P) lookup services—such as Chord, CAN, Pastry and Tapestry—organize peers into a flat overlay network and offer distributed hash table (DHT) functionality. In these systems, data is associated with keys and each peer is responsible for a subset of the keys. We study hierarchical DHTs, in which peers are organized into groups, and each group has its autonomous intra-gr...

P2P is an innovative type of technology that is both flexible and scalable while providing communication autonomy throughout the system. Within this paper the P2P environment is examined with a broad ranging evolutionary procedure that addresses: previous work within the P2P field, current P2P Information System conceptual design and finally the potential of integrating P2P and workflow technol...