Green Specifications: A Concrete Example

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Author(s): Thomas Schulze (University of Mannheim, Germany)and Colin Atkinson (University of Mannheim, Germany)
Copyright: 2015
Pages: 24
Source title: Green Services Engineering, Optimization, and Modeling in the Technological Age
Source Author(s)/Editor(s): Xiaodong Liu (Edinburgh Napier University, UK)and Yang Li (British Telecom, UK)
DOI: 10.4018/978-1-4666-8447-8.ch001

Keywords: Business & Management / Electronic Services & Service Science / Environmental Science and Technologies / Information Science Reference

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Abstract

Green specifications provide a foundation for reducing the environmental impact of computing applications and improving the consumption behavior of users by providing a clear and precise specification of the environmental impact of specific services. They can either be used to specify the actual behavior and environmental impact of existing services or to define the requirements that a to-be-built service must fulfill. Green specifications describe the properties of a service from distinct viewpoints such as a structural viewpoint which describes the data types and external components that the service uses, a functional viewpoint which describes the effects of the service's operations using pre- and post- conditions and a behavioral viewpoint which describes the externally visible states and transitions exhibited by the service. These are augmented with non-functional information describing the environmental properties of, or constraints on, the service. In this chapter we provide an introduction to green specifications and give a concrete example of their use to specify a Video on Demand (VoD) service.

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