Dynamic Selection Of Redundant Web Services : Managing Redundancy Through Virtual Web Services

ISBN-13: 9783639014839 / Angielski / Miękka / 2009 / 152 str.

Svetlana Slavova

Opis

In the domain of Web Services it is not uncommon tofind redundant services that provide functionalitiesto the clients. Services with the same functionalitycan be clustered into a group of redundant services.Respectively, if a service offers differentfunctionalities, it belongs to more than one group.Having various Web Services that are able to handlethe client s request suggests the necessity of amechanism that selects the most appropriate WebService at a given moment of time.This book presents an approach, Virtual Web ServicesLayer, for dynamic service selection based onvirtualization on the server side. It helps managingredundant services in a transparent manner as well asallows adding services to the system at run-time. Inaddition, the layer assures a level of security sincethe clients do not have direct access to the WebServices. Several selection techniques are applied to increasethe performance of the system in terms ofload-balancing, dependability, or execution time. Theresults show which techniques are appropriate whenvarious QoS criteria of the services are known andhow the correctness of this information influences onthe decision-making process.

O autorze

Eng., B. Sc., M. Sc.: Computer Science at University of
Saskatchewan, Canada, M. Sc., 2005-2007. Computer Science at
Technical University of Sofia, Bulgaria, B. Sc., 2000-2005.
Senior Software Developer at Register.BG Ltd., Varna, Bulgaria,
2007-present. Teaching Assistant at University of Saskatchewan,
2005-2007.
http://svetlana.s.bg/