Download Structured Peer-to-Peer Systems: Fundamentals of by Dmitry Korzun PDF
By Dmitry Korzun
The box of based P2P platforms has obvious quickly development upon the advent of allotted Hash Tables (DHTs) within the early 2000s. the 1st proposals, together with Chord, Pastry, Tapestry, have been steadily superior to deal with scalability, locality and safeguard matters. through the use of the processing and bandwidth assets of finish clients, the P2P procedure allows excessive functionality of knowledge distribution that's difficult to accomplish with conventional client-server architectures. The P2P computing group is usually being actively applied for software program updates to the web, P2PSIP VoIP, video-on-demand, and disbursed backups. the hot advent of the identifier-locator cut up notion for destiny net architectures poses one other vital software for DHTs, specifically mapping among host everlasting id and altering IP deal with. The turning out to be complexity and scale of recent P2P structures calls for the advent of hierarchy and intelligence in routing of requests.
Structured Peer-to-Peer Systems covers primary concerns in association, optimization, and tradeoffs of current large-scale based P2P structures, in addition to, presents ideas, analytical types, and simulation tools acceptable in designing destiny structures. half I offers the state of the art of dependent P2P structures, renowned DHT topologies and protocols, and the layout demanding situations for effective P2P community topology association, routing, scalability, and safety. half II exhibits that neighborhood techniques with constrained wisdom in step with peer give you the optimum scalability point topic to average functionality and defense constraints. even if the thoughts are neighborhood, their potency is because of components of hierarchical association, which look in lots of DHT designs that frequently are regarded as flat ones. half III describes tips on how to steadily increase the neighborhood view restrict whilst a peer is able to function with better wisdom, nonetheless partial, concerning the complete process. those equipment have been shaped within the evolution of hierarchical association from flat DHT networks to hierarchical DHT architectures, look-ahead routing, and topology-aware rating. half IV highlights a few identified P2P-based experimental platforms and advertisement functions within the sleek net. The dialogue clarifies the significance of P2P know-how for development current and destiny net systems.
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Extra resources for Structured Peer-to-Peer Systems: Fundamentals of Hierarchical Organization, Routing, Scaling, and Security
Sample text
In: Proceedings of 1st Symposium on Networked Systems Design and Implementation (NSDI’04) (2004). html 20 1 Terminology, Problems, and Design Issues 22. : Kelips: Building an efficient and stable P2P DHT through increased memory and background overhead. In: IPTPS ’03: Proceedings of 2nd International Workshop on Peer-to-Peer Systems. Lecture Notes in Computer Science, vol. 2735, pp. 160–169. Springer, New York (2003) 23. : SkipNet: a scalable overlay network with practical locality properties. In: USITS’03: Proceedings of 4th USENIX Symposium on Internet Technologies and Systems.
1658955 60. : A hybrid topology architecture for P2P systems. In: ICCCN 2004: Proceedings of 13th International Conference on Computer Communications and Networks, IEEE, pp. 475–480 (2004) 61. : Vulnerabilities and security threats in structured overlay networks: a quantitative analysis. In: ACSAC ’04: Proceedings of 20th Annual Computer Security Applications Conference, pp. 252–261. IEEE Computer Society (2004). 50 62. : Chord: a scalable peer-to-peer lookup service for Internet applications. IEEE/ACM Trans.
Accordion uses greedy routing approach, each node forwards the lookup request to the node with closest ID preceding the key. The process continues until the predecessor of the key hosting node is reached. The predecessor replies directly to the node that initiated the request. Accordion explores multiple paths in parallel, sending as many lookups as the bandwidth budget allows. Parallel lookups are preferable compared to explicit probing, as those help to avoid timeouts due to dead nodes and also discover new nodes in a DHT.