Towards Improving the Availability of Service Compositions
Citation:
D. Dahlem, L. Nickel, J. Sacha, B. Biskupski, J. Dowling, and R. Meier, Towards Improving the Availability of Service Compositions, Inaugural IEEE International Conference on Digital Ecosystems and Technologies (IEEE DEST 2007), Cairns, Australia, 21-23 Feb., IEEE, 2007, 67 - 70Download Item:
Abstract:
The proliferation of open Internet-scale serviceoriented
platforms based on standards, such as WSDL, SOAP
and BPEL, enables the composition of independent web services
into new value-added services. Such service compositions define
the information flows between autonomous and potentially
heterogeneous services across the boundaries of independent
provider organisations. The availability of individual services
in such Digital Ecosystems is likely to be variable due to
fluctuating usage load and resource limitations imposed by a
service provider's infrastructure. This problem becomes more
acute as the number of services in a composition increases. This
paper presents a mediation model for improving the availability
of composed services. The mediation model masks failures in a
service composition by transparently selecting (and executing)
an alternative composition at runtime. Service consumers use
a common interface to a set of functionally equivalent service
compositions while a selection mechanism identifies the most
suitable (alternative) service composition. An evaluation of our
implementation of the proposed mediation model demonstrates
that the consumer perceived availability of value-added services
can be improved significantly.
Author's Homepage:
http://people.tcd.ie/rmeierDescription:
PUBLISHED
Author: MEIER, RENE
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Inaugural IEEE International Conference on Digital Ecosystems and Technologies (IEEE DEST 2007)Publisher:
IEEEType of material:
Conference PaperCollections
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