一种Web服务器集群的动态反馈算法  

A dynamic feedback algorithm for Web server cluster

作　　者：蒋江波[1] 徐志江[1] 

机构地区：[1]浙江工业大学省通信网技术应用研究重点实验室,浙江杭州310023

出　　处：《微型机与应用》2016年第1期12-15,共4页Microcomputer & Its Applications

摘　　要：介绍了Web服务器集群技术和负载均衡,针对静态的加权轮询算法和动态加权最小连接数算法的不足,提出一种基于动态反馈的加权最小连接数算法,该算法根据服务器的实时负载动态地改变权值的大小,再根据最小连接数算法来分配新的连接请求。通过网络仿真软件OPNET对这3种算法进行仿真、对比得出,新的算法能降低HTTP响应时间、提高负载均衡效率。This paper describes the technology of Web server cluster and load balancing. Since the algorithm of Wighted Round Robin （WRR） and Weighted Least-Connection （WLC） have some shortages, this paper presented an algorithm of Weighted Least-Connection with dynamic feedback. The algorithm uses a dynamic weight to represent the current load, then brings the new weight in the algorithm of WLC to assign new request of connection. Comparing three algorithms by OPNET simulation soft- ware, the results show that this dynamic feedback algorithm can reduce the time of HTTP response and improve the efficiency of load balancing.

关 键 词：WEB服务器集群 负载均衡 动态反馈 OPNET 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]