一种面向负载平衡的主动复制技术

针对主动复制容错技术中存在资源浪费及请求响应时间长的问题,提出了一种适用于请求-状态相关及请求-状态无关的系统模型、面向负载平衡的主动复制技术。容错组成员都能根据当前的负载信息列表决定是否执行接收到的请求,只有负载最轻的成员执行当前请求。组中各成员同时执行不同的请求,并直接返回请求响应结果,从而在充分利用主动复制技术中,在引入冗余资源的基础上缩短了请求的平均响应时间。实验结果显示,该技术能缩短请求的平均响应时间,提高系统运行效率;在请求-状态相关的系统模型下,请求的平均响应时间跟与状态相关的请求数目成正比。

An Active Replication Technology for Load Balancing

To solve the problem of wasting resources and taking long respond time during the process of active replication fault-tolerant technology,an active replication technology for load balancing which can apply to the system model of request-state related and request-state unrelated is proposed.According to the current load,every member of the fault-tolerant group can decide whether it carries out the request to make them achieve the state of load-balancing,but only the member having lightest load can respond to the request.Members in the fault-tolerant group take charge of different requests parallel,and feedback results directly.As a result,the redundant resources introduced by active replication technology are made full use of,and the respond time is reduced.The results show that this technology can reduce the average response time and improve the system operating efficiency.Under the request-state related system,the average response time for request rises with the increase of requests about state.