Application of branching cells to QoS aware service orchestrations

نویسندگان

  • Albert Benveniste
  • Claude Jard
  • Samy Abbes
چکیده

By allowing service calls to be guarded by contexts, Asymmetric Event Structures (AES for short) and contextual nets are a convenient framework to model composite Web services or service orchestrations. We equip AES with QoS domains as a framework to capture a number of QoS metrics and their combination. We use the resulting model to formalize QoS-based late service binding in composite services. When subject to QoS-based late service binding, composite services may be non-monotonic with respect to QoS, meaning that strictly improving the QoS of a service may strictly decrease the end-to-end QoS of the composite service, an embarrassing feature for QoS-aware management; we study this issue. Branching cells of AES play a central role in this study.

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عنوان ژورنال:
  • Theor. Comput. Sci.

دوره 546  شماره 

صفحات  -

تاریخ انتشار 2014