为了帮助Web代理系统自动调整负载,提高服务器节点的使用效率,提出了基于多智能体的代理服务器集群架构,设计了一套适用于负载平衡的智能体通信协议和Web缓存管理机制,及时反映系统的负载变化及节点间的负载差异.当网络负载和服务器数量发生变化时,服务器节点能够随环境变化进行自适应的配置,在智能体指导下修改服务器的资源管理范围.实验结果表明,与其它代理群集相比,智能体代理系统在缓存命中率、负载均衡以及响应延迟方面都有显著提高.%To adjust the workload of web proxy system adaptively and increase the use efficiency of server nodes, a structure of distributed proxy cluster using multi-agents is proposed. Through the design of communication protocol of agents and web cache management scheme, the load status and the load change between nodes can be reflected in tine. When the network load and server numbers change the cluster nodes can adaptively reconfigure the system states and modify the management zones of resource according to the directions of agents. Experimental results show that the improved system can get better performance than other proxy system in such areas as cache hit rate, load balance and response delay.
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