D. Lamanna, J. Skene and W. Emmerich
Dept. of Computer Science,
University College London
Dept. of Computer Science
Gower Street, London, WC1E 6BT UK
Abstract:
Application or web services are increasingly being used across
organisational boundaries. Moreover, new services are being
introduced at the network and storage level. Languages to specify
interfaces for such services have been researched and transferred
into industrial practice. We investigate end-to-end quality of
service (QoS) and highlight that QoS provision has multiple facets
and requires complex agreements between network services, storage
services and middleware services. We introduce SLAng, a
language for defining Service Level Agreements (SLAs) that
accommodates these needs. We illustrate how SLAng is used
to specify QoS in a case study that uses a web services
speci- fication to support the processing of images across
multiple domains and we evaluate our language based on
it.
 |
Updated on: 29/04/2003
|
|