Attribute-based Data Access over P2P Systems

The peer-to-peer (P2P) paradigm for building distributed applications has recently attracted the attention of industry and media primarily due to the enormous success of systems such as Napster, Gnutella and Freenet. The multitude of projects that have been proposed based on P2P all need to confront common problems including security, reliability and routing. Unfortunately, traditional techniqu...

Publish/subscribe systems are an alternative to query-based systems in cases where the same information is asked for over and over, and where clients want to get updated answers for the same query over a period of time. Recent publish/subscribe systems such as P2P-DIET have introduced this paradigm in the P2P context. In this chapter we built on the experience gained with P2P-DIET and the Edute...

Recently, data integration systems and peer database management systems that attempt to model and integrate data in a peer-to-peer (p2p) environment have attracted the attention of researches. Such systems give opportunities to the local relational database management system to exchange data with other nodes in a p2p environment. The databases systems in p2p are completely autonomous, heterogen...

The significance of efficient security mechanisms in P2P and Grid systems is unquestionable, since security is considered to be a quality of service factor for such systems. Traditional security mechanisms in P2P and Grid systems include encryption, sand-boxing and other access control and authentication mechanisms. Unfortunately these techniques incur additional overhead. By using trust and re...

Resources monitoring is an important problem of the overall efficient usage and control of P2P file-sharing systems. The resources of file-sharing systems can include all distributing servers, programs and peers. Several researches have tried to address this issue, but most of them illuminated P2P traffic characterization, identification and user behavior. Based on previous work, we present a r...

Peer-to-Peer (P2P)-based approach for on-demand video streaming systems (P2P-VoD) characterized by asynchronous user-interactivity has proven to be practical and effective in recent years with real-world Internet-scale deployment (Huang, Li, & and Ross, 2007). Current state-of-art P2P-VoD systems employ tracker server for discovering content suppliers which poses scalability and bottleneck issu...

Peer-to-peer (P2P) systems account for more than half of Internet traffic today, and an increasing number of user applications, e.g., Bittorrent, eDonkey, Joost, Skype, GoogleTalk, and P2P-TV, rely on P2P methodology. P2P systems build overlays at the application layer, independently of Internet routing and ISP topologies. This leads to measurement traffic overhead and routing inefficiencies fo...

A problem associated with current P2P (peer-to-peer) systems is that the consistency between copied contents is not guaranteed. Additionally, the limitation of fulltext search capability in most of the popular P2P systems hinders the scalability of P2P-based content sharing systems. We proposed a new P2P content sharing system in which the consistency of contents in the network is maintained af...

With the wide spread of peer-to-peer (P2P) applications, P2P technology has been shown to be a promising solution to deploy large-scale media streaming systems. Supporting asynchronous user requests and VCR-like interactions in media streaming systems nevertheless remains a challenging task. In this paper, we introduce a derivative tree-based P2P framework for supporting interactive streaming a...