|Author||Grace, Paul ♦ Hughes, Danny ♦ Porter, Barry ♦ Blair, Gordon S. ♦ Coulson, Geoff ♦ Taiani, Francois|
|Subject Domain (in DDC)||Computer science, information & general works ♦ Data processing & computer science|
|Subject Keyword||Networking Community ♦ Application-tailored Service ♦ Declarative Approach ♦ Network Overlay ♦ Ever-widening Range ♦ Configurable Deployment ♦ Foundational Bedrock ♦ Multiple Overlay ♦ Popular Protocol ♦ Crucial Issue ♦ Overlay Plug-in ♦ Network Heterogeneity ♦ Middleware Community ♦ Physical Node ♦ Dynamic Reconfigurability ♦ Extensive Range ♦ Middleware Approach ♦ Open Overlay Framework ♦ Open Overlay ♦ Composite Protocol ♦ Wider Middleware Architecture ♦ Middleware Architecture ♦ Detailed Case Study|
|Description||In order to provide an increasing number of functionalities and benefit from sophisticated and application-tailored services from the network, distributed applications are led to integrate an ever-widening range of networking technologies. As these applications become more complex, this requirement for ‘network heterogeneity ’ is becoming a crucial issue in their development. Although progress has been made in the networking community in addressing such needs through the development of network overlays, we claim in this paper that the middleware community has been slow to integrate these advances into middleware architectures, and, hence, to provide the foundational bedrock for heterogeneous distributed applications. In response, we propose our ‘open overlays ’ framework. This framework, which is part of a wider middleware architecture, accommodates ‘overlay plug-ins’, allows physical nodes to support multiple overlays, supports the stacking of overlays to create composite protocols, and adopts a declarative approach to configurable deployment and dynamic reconfigurability. The framework has been in development for a number of years and supports an extensive range of overlay plug-ins including popular protocols such as Chord and Pastry. We report on our experiences with the open overlays framework, evaluate it in detail, and illustrate its application in a detailed case study of network heterogeneity.|
|Educational Role||Student ♦ Teacher|
|Age Range||above 22 year|
|Education Level||UG and PG ♦ Career/Technical Study|
|Learning Resource Type||Article|
|Publisher Institution||in proc. of the European Conference on Computer Systems (EuroSys’08|
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