Cost-based prevention of violations of service level agreements in composed services using self-adaptation
作者: Philipp LeitnerSchahram DustdarBranimir WetzsteinFrank Leymann
作者单位: Vienna University of Technology, Wien, Austria;;Vienna University of Technology, Wien, Austria;;University of Stuttgart, Stuttgart, Germany;;University of Stuttgart, Stuttgart, Germany
论文集英文名称: European Software Services and Systems Research
来源数据库: Association for Computing Machinery
关键词: SOAAdaptationFuture internetMonitoringQuality predictionService technologyService-oriented systemsSoftware life-cycleSoftware services
原始语种摘要: Providers of composite Web services face the challenge of having to comply to SLAs, which are agreements governing the minimum performance that customers can expect from a composite service. In this work, a framework for optimizing adaptations of service compositions with regards to SLA violations has been developed. The framework, dubbed PREvent (Prediction and Prevention of SLA Violations Based on Events), uses techniques from the areas of machine learning and heuristic optimization to construct models for prediction of SLA violations at runtime, and to decide which adaptation actions may be used to improve overall performance in a composition instance. An optimizer component decides, whether applying these changes makes sense economically (i.e., whether the costs of violating the SLAs...
全文获取路径: ACM 

  • costs 费用
  • level 水准
  • economically 经济地
  • adaptation 适应
  • applying 施加
  • service 服务
  • heuristic 试探
  • minimizing 极小化
  • system