一种可动态更新的高可用中间件框架

针对动态更新缺乏对分布式应用支持的缺陷，提出了一套可动态更新的高可用中间件框架，用于分布式环境中高可用服务的开发．它包含了一套灵活的动态插件管理框架，可完成单进程的动态更新，同时提供了一套分布式协作服务管理框架，来完成多进程协同服务的同步动态更新．通过实现服务可用性论坛提出的高可用应用接口规范，验证了该框架具有单进程及多进程同步动态更新的能力．

A dynamically updatable high available middleware framework

Dynamic updating is an important high available technology, by which software can implement mending functions without restarting computers and the costs spending patching or upgrading of software can be reduced remarkably. At present its support for distributed applications is not enough. This paper discussed the mechanism of this technology, and gave a Dynamically Updatable High Available Middleware Framework, which is mainly used to develop high availability distributed applications. It provides a flexible Dynamic Plug-in Management Framework, which can be used to dynamically update a single process. It also provides a Distributed Collaborated Service Management Framework, which is used to dynamically update multi-processes collaborative service synchronously. An implementation of the High Available Application Interface Specification constituted by SA Forum is given based on the framework, which proves it has the ability of dynamically updatable for both a single process and multi-processes synchronously.