面向服务的P2P模型研究与设计  

Research and design of service-oriented P2P model

作　　者：刘镇[1] 尚艳羽 

机构地区：[1]江苏科技大学计算机科学与工程学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2015年第2期159-163,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家科技支撑计划基金项目(2012BAZ03935)

摘　　要：随着网络规模以及应用范围的不断扩大,C/S模式面临的中心压力大、单点失效等问题日趋突出;P2P模式具有分布性、易拓展、负载均衡等优势,赢得了广泛关注,但P2P模式在服务提供和控制上还存在不足.文中引入SOA思想,在P2P模式下设计分布式服务模型;借鉴Petri-net中模型描述和控制的思想对服务组合控制模式进行改进;采用改进的遗传算法对不同性能的服务节点进行选择,提高服务提供质量.通过实验验证,该方法对提高系统性能和服务效率具有重要意义.With the expending of network scale and scope of application ,bottlenecks which the C/S faces,such as big pressure of the center ,the failure of single point , have become increasingly prominent .This makes the P2 P model which has the advantages of distribution ,easy to expand ,load balancing and so on has attracted widespread attention.But it remains to be further improved in terms of service delivery and control .This paper introduces SOA thinking and designs a distributed service model in P 2 P mode .The model references the ideas of Petri-net about the description and control of model to improve the control mode of the service combination ;this paper uses the improved genetic algorithm to make the combination to improve the quality of service .Experimental result in-dicates that the method has great significance in improving the system performance and service efficiency .

关 键 词：P2P SOA 服务组合 遗传算法 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]