【摘要】 目前很多分布式应用系统都利用冗余服务技术来提高系统的可用性。论文分析了分布式冗余服务系统中集中管理模式存在的诸多问题,并提出引入移动agent实现对服务实例主动的集中管理和分布管理的结合,从而保证系统高可用性的同时改善系统的性能。其中用到对象和实例的概念来定义冗余服务。更多还原

【Abstract】 Today,many distributed application systems improve their availability by using technology of redundant ser-vice.In this paper,some problems that happen in such systems that adopt central control management mode are ana-lyzed,and bring forward importing mobile agent technology into the redundant service system to combine central control management mode and distributed management mode,by such a way the system can keep high availability,and also im-prove system’s performance.The concept of redundant service is defined with the concept of object and instance.更多还原