P2P traffic optimization

• Published in: Science China. Information sciences Vol. 55; no. 7; pp. 1475 - 1492
• Main Authors: Zhang, GuoQiang, Tang, MingDong, Cheng, SuQi, Zhang, GuoQing, Song, HaiBin, Cao, JiGuang, Yang, Jing
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science China Press 01-07-2012; Springer Nature B.V
• Subjects: China; Computer Science; Cost engineering; Information Systems and Communication Service; Internet; Networks; Optimization; P2P系统; Review; Scheduling; Sustainable development; Traffic engineering; Traffic flow; 优化技术; 内容提供商; 分发系统; 可持续发展; 服务供应商; 流量; 网络资源; P2P traffic optimization; network coding; P2P cache; locality-awareness; P2P traffic localization; content-centric network
• ISSN: 1674-733X; 1869-1919
• DOI: 10.1007/s11432-011-4464-8

Peer-to-peer （P2P） based content distribution systems have emerged as the main form for content distribution on the Interact, which can greatly reduce the distribution cost of content providers and improve the overall system scalability. However, the mismatch between the overlay and underlay networks causes large volume of redundant traffic, which intensifies the tension between P2P content providers and ISPs. Therefore, how to efficiently use network resources to reduce the traffic burden on the ISPs is crucial for the sustainable development of P2P systems. This paper surveys the state-of-art P2P traff~c optimization technologies from three perspectives： P2P cache, locality-awareness and data scheduling. Technological details, comparison between these technologies and their applicabilities are presented, followed by a discussion of the issues that remain to be addressed and the direction of future content distribution research.