基于虚拟服务器的负载均衡技术研究与实现

Study and Implementation of Load Balancing Technology Based on Virtual Server

Intemet业务量的激增和网络应用特殊化，都使得负载均衡成为迫切需求。Linux虚拟服务器按传输层连接对集群节点进行业务分配，能便捷而高效地实现负载均衡。对Linux虚拟服务器集群的结构与原理进行讨论，重点阐述了满足不同应用需要的4种负载均衡算法，并在Linux操作系统环境下构建了虚拟服务器集群，测试了负载响应、服务性能、调度器备份。结果表明，虚拟服务器集群技术较大幅度地提高了系统的综合性能。

Explosive traffic on the internet and specialization of network applications both ask for load bal- ance urgently. Linux virtual server distributes workload among cluster nodes according to transmission connec- tions handily and efficiently. Four algorithm of load-balancing are introduced in this paper. After building vir- tual cluster servers under Linux OS, we give a test of bad response, server performance and balancer backup. This practice indicates that virtual server cluster can provide highly performance server system.