Healing Web applications through automatic workarounds |
| |
Authors: | Antonio Carzaniga Alessandra Gorla Mauro Pezzè |
| |
Affiliation: | (1) Faculty of Informatics, University of Lugano, Via Buffi13, 6904 Lugano, Switzerland;(2) Dipartimento di Informatica, Sistemistica e Comunicazione, University of Milano-Bicocca, Via Bicocca degli Arcimboldi 8, 20126 Milan, Italy |
| |
Abstract: | We develop the notion of automatic workaround in the context of Web applications. A workaround is a sequence of operations, applied to a failing component, that is equivalent
to the failing sequence in terms of its intended effect, but that does not result in a failure. We argue that workarounds
exist in modular systems because components often offer redundant interfaces and implementations, which in turn admit several
equivalent sequences of operations. In this paper, we focus on Web applications because these are good and relevant examples
of component-based (or service-oriented) applications. Web applications also have attractive technical properties that make
them particularly amenable to the deployment of automatic workarounds. We propose an architecture where a self-healing proxy
applies automatic workarounds to a Web application server. We also propose a method to generate equivalent sequences and to
represent and select them at run-time as automatic workarounds. We validate the proposed architecture in four case studies
in which we deploy automatic workarounds to handle four known failures in to the popular Flickr and Google Maps Web applications.
This work has been supported by the project PerSeoS funded by the Swiss National Fund. |
| |
Keywords: | Self-healing Autonomic computing Equivalent sequences Automatic workarounds Fault recovery |
本文献已被 SpringerLink 等数据库收录! |
|