CAJ | 학술논문

近年来，对等网络（peer to peer，P2P）因其高效的分片和分发等机制，已成为大数据高效分发的关键支撑技术。针对P2P文件分发系统BitTorrent中Tracker服务器端节点选择算法没有考虑节点活跃度的问题，提出了一种基于活跃度的Tracker服务器端节点选择算法。该算法选择出活跃度高的节点来建立一个更高效的分发网络，使之更能符合请求节点的需求，帮助请求节点更加高效地完成下载任务。实验结果表明，改进后的节点选择算法可以缩短文件的下载时间，提高网络的分发效率，提升系统的性能。
근년래，대등망락（peer to peer，P2P）인기고효적분편화분발등궤제，이성위대수거고효분발적관건지탱기술。침대P2P문건분발계통BitTorrent중Tracker복무기단절점선택산법몰유고필절점활약도적문제，제출료일충기우활약도적Tracker복무기단절점선택산법。해산법선택출활약도고적절점래건립일개경고효적분발망락，사지경능부합청구절점적수구，방조청구절점경가고효지완성하재임무。실험결과표명，개진후적절점선택산법가이축단문건적하재시간，제고망락적분발효솔，제승계통적성능。
In recent years, the peer to peer (P2P) has become the key support technology of the efficient distribution of big data. As the node selection algorithm in the BitTorrent Tracker server of the P2P file distribution system does not consider the problem of node liveness, this paper introduces a liveness-based Tracker server node selection algo-rithm. This algorithm can search for the high liveness nodes to build a more efficient distribution network that fits the demand of requesting nodes and boosts their download procedure. The experimental result verifies that the improved node selection algorithm can reduce file download time and improve the efficiency of the distribution network.