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Viewing report
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Dynamic Selection Of Redundant Web Services. Edition No. 1
VDM Publishing House, Jan 2009, Pages: 152
In the domain of Web Services it is not uncommon to
find redundant services that provide functionalities
to the clients. Services with the same functionality
can be clustered into a group of redundant services.
Respectively, if a service offers different
functionalities, it belongs to more than one group.
Having various Web Services that are able to handle
the client’s request suggests the necessity of a
mechanism that selects the most appropriate Web
Service at a given moment of time.
This book presents an approach, Virtual Web Services
Layer, for dynamic service selection based on
virtualization on the server side. It helps managing
redundant services in a transparent manner as well as
allows adding services to the system at run-time. In
addition, the layer assures a level of security since
the clients do not have direct access to the Web
Services.
Several selection techniques are applied to increase
the performance of the system in terms of
load-balancing, dependability, or execution time. The
results show which techniques are appropriate when
various QoS criteria of the services are known and
how the correctness of this information influences on
the decision-making process.
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