Towards a SLA-based Approach to Handle Service Disruptions

Touseau, Lionel; Donsez, Didier; Rudametkin, Walter

doi:10.1109/scc.2008.107

Cited by 11 publications

(5 citation statements)

References 17 publications

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“…The agreement describes terms regarding service usage rate and delivery which are agreed between the service providers and the consumers. SLAs contain the following parts [54]:…”

Section: Where?mentioning

confidence: 99%

Reliability and high availability in cloud computing environments: a reference roadmap

Mesbahi

Rahmani

Hosseinzadeh

2018

Hum. Cent. Comput. Inf. Sci.

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Reliability and high availability have always been a major concern in distributed systems. Providing highly available and reliable services in cloud computing is essential for maintaining customer confidence and satisfaction and preventing revenue losses. Although various solutions have been proposed for cloud availability and reliability, but there are no comprehensive studies that completely cover all different aspects in the problem. This paper presented a ‘Reference Roadmap’ of reliability and high availability in cloud computing environments. A big picture was proposed which was divided into four steps specifying through four pivotal questions starting with ‘Where?’, ‘Which?’, ‘When?’ and ‘How?’ keywords. The desirable result of having a highly available and reliable cloud system could be gained by answering these questions. Each step of this reference roadmap proposed a specific concern of a special portion of the issue. Two main research gaps were proposed by this reference roadmap.

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“…The agreement describes terms regarding service usage rate and delivery which are agreed between the service providers and the consumers. SLAs contain the following parts [54]:…”

Section: Where?mentioning

confidence: 99%

Reliability and high availability in cloud computing environments: a reference roadmap

Mesbahi

Rahmani

Hosseinzadeh

2018

Hum. Cent. Comput. Inf. Sci.

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“…Of course, to achieve that dynamism in binding, additional mechanisms such as notification of service arrivals and departures are necessary. Researchers have also proposed to take into account service disruptions by using service‐level agreements for dynamic service‐oriented applications . They have described a way to transparently handle service disruptions through service‐level agreements and service‐level management.…”

Section: Related Workmentioning

confidence: 99%

A rule-based approach for availability of service by automated service substitution

Liang

Lee

Hung

2012

Softw. Pract. Exper.

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SUMMARY High availability of software components has long been studied. For a software system, when unavailability of a component has caused a suspension of the system, the system has to be recovered or resumed as soon as possible. To substitute an unavailable software component with a backup copy is therefore unavoidable in achieving high availability of software systems. In this paper, in comparison with using redundancies, we take an alternative approach that steps away from the physical code equivalence of the software but focuses more on the equivalence in using the function unit without concerning about the implementation itself. We investigate the problem of Web service availability in service‐oriented software systems and then report a framework for Web service availability in such systems using automated and rule‐based Web service substitution. The framework takes a novel approach to manage the runtime replacement of services, combining (i) an approach that classifies services using co‐occurrence of terms in various tags of the service descriptions, (ii) an approach to establish the compatibility and substitution of service operation interfaces and (iii) a middleware for handling service replacements. Our approach is designed to address the problem of Web service availability from the client side and assumes that the client has no control of the Web service providers. This is a completely distributed approach in comparison with other related work and presents a valuable benefit of client orientation. As two additional distinguishing characteristics, our framework also meets the challenges of (i) semantic heterogeneity of Web services in identifying substitute service and (ii) transparency and independence in handling unavailability at the level of Web services. We show in our experiments that the service substitute identification based on the proposed framework achieves a best precision of 85%. We demonstrate our implementation of the middleware for service unavailability handling in the framework. We also present experiments on service substitution within a demo business application in the presence of unavailability. Copyright © 2012 John Wiley & Sons, Ltd.

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“…Blocking services are implemented by using iPOJO's Temporal Dependency handler. SLA support is based on the works of Touseau et al [15]. Servicelevel dependencies combine two iPOJO mechanisms: service callbacks and service controllers.…”

Section: Dynamic Deployment and Substitution Of Sca Componentsmentioning

confidence: 99%

Service Component Architecture Extensions for Dynamic Systems

Américo

Donsez

2012

Service-Oriented Computing

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International audienceThe Service Component Architecture (SCA) is a set of specifications which defines a model in which components may interact by means of services. SCA is supported by major software vendors due to its several advantages, such as technology independence and portability. However, SCA in its current form does not address components substitutability, one of the goals of the Service-Oriented Architectures style. This paper discusses this limitation and proposes a set of extensions to SCA in order to manage dynamic substitutability of services and their life cycle, which allows components to change service providers at run-time whenever they need to. These extensions are validated by NaSCAr, an iPOJO-based tool which enables the dynamic deployment and adaptation of SCA composites on the OSGi service platform

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Towards a SLA-based Approach to Handle Service Disruptions

Abstract: Abstract

Cited by 11 publications

References 17 publications

Reliability and high availability in cloud computing environments: a reference roadmap

Reliability and high availability in cloud computing environments: a reference roadmap

A rule-based approach for availability of service by automated service substitution

Service Component Architecture Extensions for Dynamic Systems

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