关键词: 容错, 负载平衡, 主动复制, 平均响应时间

Abstract:

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.

Key words: fault tolerance;load-balancing;active replication technology;average response time