Management of Value-Added Services in the Trading-Based System AGORA
L. Keller
Institute of Telematics, University of Karlsruhe, Zirkel 2, D-76128
Karlsruhe, Germany
Email: Ludwig.Keller_AT_db.com
Abstract
Trading based systems are tailored to handle a complex number of system
resources in distributed, permanently changing environments. These resources are
usually represented by their service descriptions offered to a trader. In
contrast to the conventional approach in which a service is provided by only one
service object, we propose an extended trading concept to maintain and to manage
services in open distributed systems. It allows to mediate value-added services.
These are either reliable services guaranteeing independence and autonomy of the
service objects or complex services that are defined by the functional
composition of existing services. They are done by the cooperation of different
services objects. In this paper we present this extended trading approach and
describe our system AGORA that implements the extended service model and the
mediation of value-added services in an open distributed system.
Keywords: Trading; value-added service; OSF DCE; falut tolerance; service management
JNSM: Vol. 6, No. 4, 1998
Management of Value-Added Services in the Trading-Based System AGORA [Vol. 6, No. 4, 1998]
NOTE: only abstract of paper available on-line
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