一种web服务器集群自适应动态负载均衡设计与实现  

Design and Implementation of Adaptive Dynamic Load Balancing for Web Server Clusters

作　　者：葛钰 李洪赭 李赛飞[1] GE Yu;LI Hongzhe;LI Saifei(School of Information Science and Technology,Southwest Jiaotong University,Chengdu 611756)

机构地区：[1]西南交通大学信息科学与技术学院,成都611756

出　　处：《计算机与数字工程》2020年第12期3002-3007,共6页Computer & Digital Engineering

基　　金：四川省重大科技专项课题(编号:2018GZDX0005,2019YFG0399);中央高校基本科研业务费专项(编号:2682019CX63)资助。

摘　　要：随着互联网技术的蓬勃发展,电商平台、视频网站等大量涌现,为人们日常生活增加了极大的便利。与此同时,由于用户规模的逐步庞大,高并发成为大规模网站需要解决的问题。基于Nginx作为反向代理为后端web服务器集群起负载均衡的方式在各大大型网站广泛运用。论文针对Nginx的加权最小连接算法存在的问题进行优化,根据后端服务器运行状态进行周期性读取各项参数,确定下一个周期内权重分配,动态修改权值并通过多次实验确定论文设计的方式能够提高负载均衡效率。With the rapid development of Internet technology,a large number of e-commerce platforms and video websites have emerged,which greatly facilitates people's daily life.At the same time,due to the gradual increase of the user scale,high con⁃currency has become a problem to be solved for large-scale websites.As a reverse proxy,Nginx is widely used for load balancing of backend web server clusters in various large websites.In this paper,the problems existing in the weighted least connections algo⁃rithm of Nginx are optimized.According to the running state of the backend server,the parameters are obtained periodically to deter⁃mine the weight distribution in the next cycle.The weights are dynamically modified and the method designed in this paper is deter⁃mined through multiple experiments to improve the load balancing efficiency.

关 键 词：NGINX WEB服务器集群 最小加权连接 动态负载均衡 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TP918[自动化与计算机技术—计算机科学与技术]