构件模型的容错体系结构和策略研究

Research of fault tolerant architecture and policies in component mode

为了提高分布应用的健壮性,通常需要开发人员编写相应的容错代码。现有的CORBA构件模型通过定义构件的端口特征,以组装的方式实现代码的二进制级复用,它使用户能够快速开发和部署分布应用。在此基础上,如何在构件模型下快速灵活地建立容错应用成为一个令人关注的话题。通过设计构件模型下的容错体系结构,提供了快速灵活开发容错应用的机制,并提出了解决两种失效类型的容错策略和算法。

Developers need to write some fault-tolerant code in order to make the application robust. CORBA component model let the code be reused in binary level by defining a group of component ports and assembling them together. In this way, the developers and the end users can build and deploy an application rapidly. However, people also pay attention to construct a fault-tolerant application rapidly and flexibly. This paper proposed a fault-tolerant architecture based on CORBA component model.It met the users to build a fault-tolerant application rapidly and flexibly. Moreover, it presented some policies and algorithmS to solve two kinds of faults.