Separating the Concerns of Distributed Deployment and Dynamic Composition in Internet Application Systems

Abstract

Abstract. The Internet is currently evolving from a global information network into a distributed application system. For example, some Internet applications are based on executing remote services which have been previously installed on possibly multiple Internet nodes, whereas parts of other Internet applications are dynamically moved from several remote nodes to be executed on a single node. In this paper, we focus on the related problem of how the parts of an Internet application that have been independently deployed on multiple Internet nodes can be transparently located, seamlessly retrieved and dynamically composed on a particular node by request. We propose a novel deployment and composition approach using so called modules and module federations and show how to separate the logical application composition from the physical module deployment. The realization of our proposal in Java and C++ is presented and the use of the approach in ongoing research projects is demonstrated.

Implementing a generic component‐based framework for telecontrol applications

“…Despite the important role that software technology is playing in the development of (distributed) control systems, it has been reported that the In contrast, [33] reports on a framework targeting similar applications as our own does but based on CORBA. Harinath et al [34] describes an object-oriented framework, also for control applications, based on the use of COTS components. In a more general setting, [35] describes an open framework for multimedia services where they use the notion of coordination in terms of connectors which encapsulate the coordination aspects and components dealing with the computational aspects (in contrast, we also highlight the coordination and computation separation but in terms of a specialized component along with specific sub-components within the major component units of our framework).…”