SLA data management criteria

Stamou, Katerina; Kantere, Verena; Morin, Jean‐Henry

doi:10.1109/bigdata.2013.6691769

Cited by 14 publications

(16 citation statements)

References 2 publications

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“…The graph in Figure 2 shows the results for both MySQL and Mongo databases from running with 2, 10 and 20 requested parameters over HTTP. The y-axis represents the average total time for each performed run and the x-axis indicates the In [16], we elaborated on SLA data management characteristics that need to be considered in the design of data models for SLA documents. Our SLA data analysis arranged SLA terms according to data management attributes and operations during the service execution.…”

Section: Resultsmentioning

confidence: 99%

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Systematic SLA data management

Stamou

2014

Proceedings of the 23rd International Conference on World Wide Web

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The cloud computing paradigm emerged with service oriented principles. In the cloud setting, organizations outsource their IT equipment and manage their business processes through virtual services that are typically exchanged over HTTP. Service Level Agreements (SLAs) depict the status of running services. SLAs represent operational contracts that allow providers to estimate their service availability according to their resource capacity.The SLA data schema and content are operationally defined by the type, volume and relations of service elements that organizations operate on their physical resources. Current lack of a uniform SLA standardization leads to semantic and operational differences between SLAs, that are produced and consumed by different organizations. Such differences prohibit common business SLA practices in the cloud computing domain. Our research introduces systematic SLA data management to describe the formalization, storage and processing of SLAs over distributed computing environments. Services in scope are framed within the cloud computing context.

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Section: Resultsmentioning

confidence: 99%

“…Edge labels are denoted as "weak" or "strong" to highlight the relationship significance in the SLA processing [16]. Additionally, representative edge-weights are assigned according to the outdegree of the head-node in the directed relationship.…”

Section: Figure 1: Sla Skeleton Graph -Degree Representationmentioning

confidence: 99%

Systematic SLA data management

Stamou

2014

Proceedings of the 23rd International Conference on World Wide Web

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“…Based on WSLA and WS-Ag, in [13] Stamou et al propose a SLA directed graph (digraph) model for automating SLA formulation and data handling. After a structured analysis of SLA data management needs in SOA scenario, the authors formulate a view on the data structure that is adequate for SLA data management over distributed web resources and build a SLA digraph data model, where nodes and edges represent SLA content.…”

Section: Related Workmentioning

confidence: 99%

“…The approach in [13]- [15] focus on managing SLA data in SOA scenarios. Actually, SLA representation covers a broader domain, as for example e-business outsourcing contracts.…”

Section: Related Workmentioning

confidence: 99%

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SLA composition in service networks

Zappatore

Longo

Bochicchio

2015

Proceedings of the 30th Annual ACM Symposium on Applied Computing

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Actual trends in IT management are more and more shifting towards services and their management. Typically, enterprises depend on services provided by third parties to realize their own service offers. However, the more services are composed, the higher grows the number of inter-and intra-organizational issues in service networks. Business Process Outsourcing (BPO) and Cloud Computing paradigms best represent such a complex scenario and require proper service governance across service providers and consumers. This can be achieved by revolving to Service Level Agreements (SLAs), in order to effectively manage contracts between parties as well as the corresponding obligations and guarantees over specific time spans. However, SLAs are mainly used as automated processes assisting users in monitoring and scheduling resources rather than end-user documents. SLAs are also seen as static documents in IT marketplaces, thus hindering their effective processing. In addition, when services are composed into higher-level ones, the contracts they are agreedupon and their SLAs should be composed accordingly. For such reasons, this research work has a two-fold purpose. Firstly, it aims at a better modeling of contracts and SLA composition. Contract templates as well as composition topologies and rules are introduced. Secondly, it proposes a tool for designing and visualizing service contracts composition and for simplifying data handling in contracts. The proposed tool exploits a directed tree graph paradigm in addition with an XML-based notation.

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