一种改进加权最小连接算法及在CDN的负载均衡技术中的应用分析  

An improved weighted least connection algorithm and it’s application analysis in CDN load balancing technology

作　　者：孟晓景 张春勇 MENG Xiaojing;ZHANG Chunyong(College of Computer Science and Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]山东科技大学计算机科学与工程学院

出　　处：《山东科技大学学报（自然科学版）》2020年第1期85-90,共6页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：赛尔网络下一代互联网技术创新项目(NGII20160205)

摘　　要：针对内容分发网络技术中本地负载均衡策略进行研究,提出一种适用于内容分发网络负载均衡的改进加权最小连接算法(improved weighted least connection,IWLC)。该算法在加权最小连接算法基础上考虑服务器性能与负载能力,引入服务器动态性能与负载水平评估因子,计算出综合性能指标以及动态权值并以此性能指标为依据完成任务调度,能较好地利用底层硬件资源,同时降低任务响应时间。This paper studies the local load balancing strategy in content distribution network technology and proposes an improved weighted leastconnection algorithm for content distribution network load balancing.The algorithm takes the server performance and load into consideration on the basis of the weighted minimum connection algorithm,introduces the server dynamic performance and load level evaluation factor,calculates the comprehensive performance index and completes the task scheduling based on the performance index to make good use of the underlying hardware resources and reducing theresponse time.

关 键 词：内容分发网络 动态负载均衡 改进加权最小连接 平均响应时间 

分 类 号：TN929.5[电子电信—通信与信息系统]