Software Engineering for Self-Adaptive Systems

Volume 5525 of the series Lecture Notes in Computer Science pp 48-70

Engineering Self-Adaptive Systems through Feedback Loops

  • Yuriy BrunAffiliated withUniversity of Southern California
  • , Giovanna Di Marzo SerugendoAffiliated withBirkbeck, University of London
  • , Cristina GacekAffiliated withUniversity of Newcastle upon Tyne
  • , Holger GieseAffiliated withHasso Plattner Institute at the University of Potsdam
  • , Holger KienleAffiliated withUniversity of Victoria
  • , Marin LitoiuAffiliated withYork University and IBM Canada Ltd.
  • , Hausi MüllerAffiliated withUniversity of Victoria
  • , Mauro PezzèAffiliated withUniversity of Milano Bicocca, Italy and University of Lugano
  • , Mary ShawAffiliated withCarnegie Mellon University

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To deal with the increasing complexity of software systems and uncertainty of their environments, software engineers have turned to self-adaptivity. Self-adaptive systems are capable of dealing with a continuously changing environment and emerging requirements that may be unknown at design-time. However, building such systems cost-effectively and in a predictable manner is a major engineering challenge. In this paper, we explore the state-of-the-art in engineering self-adaptive systems and identify potential improvements in the design process.

Our most important finding is that in designing self-adaptive systems, the feedback loops that control self-adaptation must become first-class entities. We explore feedback loops from the perspective of control engineering and within existing self-adaptive systems in nature and biology. Finally, we identify the critical challenges our community must address to enable systematic and well-organized engineering of self-adaptive and self-managing software systems.