JXTA기반 P2P시스템에서 검색 성능 향상

Abstract

Internet in its infancy was just a small-scale network consisting of a small number of computers in which one could access to data by means of a terminal. Gradually, this concept opened an infinitude of possibilities, and Internet has evolved into a global network accommodating millions of computers, which made it possible to connect all around the world, to share and access to information others have, and to communicate with them freely. It has been said that WWW (world wide web) was the second revolution that helped popularize Internet widely. And now P2P is being noted as the third evolution that will fundamentally change the client-server based Internet paradigm resulting from WWW. Personal PCs, which used to play a role as a mere client that accessed to the server and gained the information, came to possess the server function, and this made the Internet structure change from vertical system to horizontal. P2P Network Environment indicates the new concept of network with mutual distribution and collaboration among clients. Here, the concept of 'distribution' is to share the hardware resources through the distribution computing of P2P network for the purpose of maximizing efficiency, and that of 'collaboration' is to search the shared resources through collaboration among clients. In such distributed computing environment as P2P, searching distributed resources for efficient use is of capital importance. Yet, the existing way to search distributed resource information only makes use of the information about the connection between the rendezvous peers, which causes not only much expense in searching resource information, but also thus lots of retardation and traffic. To solve this problem, this study will provide a solution regarding efficient resource information searching expense by designing JXTA based P2P system supporting independent environment of network devices, and by presenting DHT proxy peer algorithm searching distributed resources efficiently in JXTA network environment.