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SOA Model for High Availability of Services

Authors:
Tayyaba Anees
Heimo Zeilinger

Keywords: service-oriented architecture; availability; high availability; monitoring; failover; safety critical systems; business systems; telecommunication systems

Abstract:
Service-oriented Architecture (SOA) provides reusability and enables easy functionality integration. Service availability in SOA is important as it is used by safety critical systems, telecommunication systems and business systems. Service unavailability can result in reduced profits, reputation damage and reduced safety. Machine virtualization, clusters and group communication systems are used to increase availability, but they are not very much applied to SOA-based systems. This paper focuses on service-orientation and a model for increasing service availability in SOA is proposed. The proposed model improves failure detection process using monitoring. Use of heartbeat mechanism is proposed for failure detection instead of timeout mechanism as it can provide more accuracy and also it can reduce failure detection time. Model is emulated in LAN and WAN environments to investigate impact of different network configurations on service availability. Results indicate that service availability is increased and failure detection process is improved by monitoring.

Pages: 70 to 75

Copyright: Copyright (c) IARIA, 2013

Publication date: April 21, 2013

Published in: conference

ISSN: 2308-4022

ISBN: 978-1-61208-263-9

Location: Venice, Italy

Dates: from April 21, 2013 to April 26, 2013