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Conference Papers Year : 2010

Optimized decentralization of composite web services

Walid Fdhila
  • Function : Author
  • PersonId : 856441
Marlon Dumas
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Claude Godart
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  • PersonId : 864654


Composite services are usually specified by means of or- chestration models that capture control and data-flow rela- tions between activities. Concrete services are then assigned to each activity based on various criteria. In mainstream service orchestration platforms, the orchestration model is executed by a centralized orchestrator through which all interactions are channeled. This architecture is not optimal in terms of communication overhead and has the usual problems of a single point of failure. In previous work, we proposed a method for executing service orchestrations in a decentralized manner while fulfilling collocation and separation constraints. However, this and similar methods for decentralized orchestration do not seek to optimize the communication overhead between services participating in the orchestration. This paper presents a method for optimizing the selection of services assigned to activities in a service orchestration in terms of QoS properties and communication overhead. The method takes into account the communication cost between pairs of services, the amount of data that these services need to exchange in the orchestration, and the collocation and separation constraints imposed by the service providers.
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inria-00537925 , version 1 (22-11-2011)


  • HAL Id : inria-00537925 , version 1


Walid Fdhila, Marlon Dumas, Claude Godart. Optimized decentralization of composite web services. 6th International Conference on Collaborative Computing: Networking, Applications and Worksharing - CollaborateCom 2010, Oct 2010, Chicago, United States. ⟨inria-00537925⟩
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