一种高性能的基于集群的Web虚拟服务器

基于集群的Web虚拟服务器是提高Web服务器性能的一种性价比较高的方法.为此给出了该虚拟服务器的体系结构,并给出了该原型的模块化设计.该结构在前端有一个请求转发器Director,接收客户连接请求和HTTP请求,并转交给后端Web服务器池中的某服务器处理,后端服务器处理请求后,直接应答客户.前端采用Direct routing的负载平衡策略,提高包转发效率;后端通过对ARP的特殊处理,避免了编译内核.原型通过在Linux平台上构建可加载的内核模块来实现,以提高包转发效率.试验证明该虚拟服务器有较高的性能.

A High-performance Visual Web Server Research Based on Cluster

Aiming at the need of high scalahihty and high availability of the network service, in this paper we propose the architecture of the Visual Server based on cluster. We also present the modular design and implementation of it. It has a Director at the front which receives a connection and HTTP request from the client and transfers it to some server in the back server pool. We use direct routing mode, so the back - end responses to the client directly. We construct loadable module based on Linux kernel to realize relatively independent function, which will contribute to fasten the speed of packet transferring. It achieves high performance and high scalahility through our test.