Publication: FAS: introducing a service for avoiding faults in composite services
Institution Authors
Authors
Gülcü, K.
Sözer, Hasan
Aktemur, Tankut Barış
Journal Title
Journal ISSN
Volume Title
Type
Book chapter
Access
info:eu-repo/semantics/restrictedAccess
Publication Status
published
Abstract
In service-oriented architectures, composite services depend on a set of partner services to perform the required tasks. These partner services may become unavailable due to system and/or network faults, leading to an increased error rate for the composite service. In this paper, we propose an approach to prevent the occurrence of errors that result from the unavailability of partner services. We introduce an external Web service, FAS (Fault Avoidance Service), to which composite services can register at will. After registration, FAS periodically checks the partner links, detects unavailable partner services, and updates the composite service with available alternatives. Thus, in case of a partner service error, the composite service will have been updated before invoking the partner service. We provide mathematical analysis regarding the error rate and the ratio of false positives with respect to the monitoring frequency of FAS for different partner service availabilities. We also provide empirical results regarding these metrics based on several tests we performed using the Amazon Elastic Compute Cloud.
Date
2012
Publisher
Springer Science+Business Media
Description
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