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A Decentralized Redeployment Algorithm for Improving the Availability of Distributed Systems

  • Sam Malek
  • Marija Mikic-Rakic
  • Nenad Medvidovic
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3798)

Abstract

In distributed and mobile environments, the connections among the hosts on which a software system is running are often unstable. As a result of connectivity losses, the overall availability of the system decreases. The distribution of software components onto hardware nodes (i.e., the system’s deployment architecture) may be ill-suited for the given target hardware en-vironment and may need to be altered to improve the software system’s avail-ability. Determining a software system’s deployment that will maximize its availability is an exponentially complex problem. Although several polyno-mial-time approximative techniques have been developed recently, these techniques rely on the assumption that the system’s deployment architecture and its properties are accessible from a central location. For these reasons, the existing techniques are not applicable to an emerging class of decentralized systems marked by the limited system wide knowledge and lack of central-ized control. In this paper we present an approximative solution for the rede-ployment problem that is suitable for decentralized systems and assess its performance.

Keywords

Software Component Centralize Algorithm Sweet Spot Target Hardware Shared Data Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Sam Malek
    • 1
    • 3
  • Marija Mikic-Rakic
    • 2
  • Nenad Medvidovic
    • 1
  1. 1.Computer Science DepartmentUniversity of Southern CaliforniaLos AngelesUSA
  2. 2.Google Inc.Santa MonicaUSA
  3. 3.The Boeing CompanyHuntington BeachUSA

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