【摘要】 中间件屏蔽了底层各类技术细节。为了使中间件能够灵活地根据具体业务需求提供用户满意的服务,需要有效的QoS管理方案。文章采用请求截获机制,提出了一种新的中间件QoS管理方案,并在CORBA上得到实现。在该方案中,设置适当的截获点截获用户请求,提取所需QoS参数进行相应QoS管理。通过采用截获机制,可以使QoS管理这样的非功能属性与业务处理等功能属性相分离,在不影响中间件系统功能的同时进行灵活的QoS管理。更多还原

【Abstract】 Middleware which hides the detail of underground technology needs effective QoS management to satisfy all kinds of user’s requirements.This paper presents a new middleware QoS management prototype based on request interception mechanism,and describes its implementation on CORBA platform in detail.In this prototype,we set proper interception points to intercept user’s requests,and abstract appropriate QoS parameters to perform QoS management.In this way,QoS management performed,as a non-functional feature,can be efficiently separated from functional features like normal operation process,and it can perform flexible middleware QoS management without affecting the normal functions of middleware.更多还原