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Title: An architecture supporting compensation-aware monitoring
Authors: Colombo, Christian
Pace, Gordon J.
Abela, Patrick
Keywords: Transaction systems (Computer systems)
Java (Computer program language)
Computer architecture
Issue Date: 2010
Publisher: University of Malta. Faculty of ICT
Citation: Abela, P., Colombo, C., & Pace, G. J. (2010). An architecture supporting compensation-aware monitoring. Workshop in Information and Communication Technology (WICT 2010), Msida. 1-3.
Abstract: To avoid large overheads induced by runtime monitoring, the use of asynchronous log-based monitoring is sometimes adopted — even though this implies that the system may proceed further despite having reached an anomalous state. Any actions performed by the system after the error occur- ring are undesirable, since for instance, an unchecked ma- licious user may perform unauthorized actions. Since stop- ping such actions is not feasible, in this paper we investigate the use of compensations to enable the undoing of actions, thus enriching asynchronous monitoring with the ability to restore the system to the original state in which the anomaly occurred. Furthermore, we show how allowing the monitor to adaptively synchronise and desynchronise with the system is also possible and report on the use of the approach on an industrial case study of a financial transaction system.
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