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Nonblocking Scheduling for Web Service Transactions

Category: Professions and Industries, Software and Web Development

Overview For improved flexibility and concurrent usage existing transaction management models for Web services relax the isolation property of Web service-based transactions. Correctness of the concurrent execution then has to be ensured by commit order-preserving transaction schedulers. However, local schedulers of service providers typically do take into account neither time constraints for committing the whole transaction, nor the individual services' constraints when scheduling decisions are made. This often leads to an unnecessary blocking of transactions by (possibly long-running) others. This paper proposes a novel nonblocking scheduling mechanism that is used prior to the actual service invocations. Its aim is to reach an agreement between the client and all participating providers on what transaction processing times have to be expected, accepted, and guaranteed.

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Publisher: University of Hannover
File Format: PDF
Date Published: Nov 18, 2008
Format: White Papers
Topics: Transaction Management, Web Services

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