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Fault Tolerant Algorithm Based on Dynamic and Active Load Balancing for redundant services

Journal of Computer Science & Technology 2004年第6期19卷 769-775页

作者： Jun-FengTian Jun-WeiZhang Feng-XianWang DepartmentofComputerScienceandTechnology UniversityofScienceandTechnologyofChinaHefei230027P.R.China MathematicsandComputerCollege HebeiUniversityBaoding071002P.R.China

A new Some-Read-Any-Write (SRAW) fault tolerant algorithm for redudant services is presented that allows a system to adjust failures dynamically in order to keep the availability and improve the performance. SRAW is based upon dynamic and active load balancing. By introducing dynamic and active load balancing scheme into redundant services, not only the processing speed of requests can be greatly improved, but also the load balancing can be simply and efficiently achieved. Integrated with consistency protocol in this paper, SRAW can also be applied to state services. The performance of SRAW algorithm is also analyzed, and comparisons with other fault tolerant algorithms, expecially with RAWA, indicate that SRAW efficiently improves the performance of redundant services with guaranteeing system availability. Keywords redundant service - fault tolerant - active - load balancing - quorum Supported by the Hebei Province Natural Science Foundation of China under Grant No.600091.Jun-Feng Tian received the B.S. degree in electrical engineering and the M.S. degree in computer application both from Hebei University, in 1986 and in 1995 respectively. Currently, he is a Ph.D. candidate in University of Science and Technology of China. He is a professor at Hebei University. His current research interests include network technology, system architecture and distributed computing.Jun-Wei Zhang was born in 1977 and received the B.S. and M.S. degrees in computer application from Hebei University, P.R. China, in 2000 and 2003, respectively. His current research interests include software fault tolerance and load balancing.Feng-Xian Wang received the B.S. degree in electrical engineering from Hebei University, P.R. China, in 1978. He is a professor in Hebei University. His current research interests include network security and distributed computing.

关键词： redundant service fault tolerant active load balancing quorum

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面向OLTP应用的服务对象管理系统

面向OLTP应用的服务对象管理系统

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第十七届全国数据库学术会议

作者：黄杰陈琳钱方贾焰邹鹏国防科技大学计算机学院

1引言随着网络通信尤其是因特网技术的发展,在线事务处理OLTP(Online Transaction Processing)应用的客户/服务器模型由原有的两层结构逐渐向三层客户/服务器体系结构发展。其

关键词： Online Transaction Processing(OLTP) CORBA redundant service Load-balancel Fault-tolerance

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