一种远程容灾系统的设计与实现

设计和实现了一种异地容灾系统，系统采用本地冗余和异地冗余相结合，服务和存储相分离的结构，采用本地控制中心作为事件处理中心和数据转发的缓存。并且设计了一种动态的失效检测算法，算法综合考虑了消息的延迟、丢失、当前网络状况和当前系统状况，能够有效的降低误判率和加快服务自动恢复速度。测试表明该系统的数据恢复速度和服务切换速度有了明显的提高。实际应用中系统运行稳定，性能良好，达到了高级别容灾系统要求。

Design and implementation of remote disaster

The paper Designed and implemented a remote disaster tolerant system,the system used a structure which combine local tolerant system with remote tolerant system,separate services and storage.it used local control center as event processing center and data forwarding cache. In addition,it designed a dynamic failure detection algorithm with message delay, loss, current network conditions and current system status considered,which effectively reduce the false positive rate and accelerate automatic recovery of service.Through tests, the system's data recovery and service switching have been significantly improved.In practical application,the system runs stable,performes well and reaches a high level of disaster tolerant system requirements.