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    System Support for Robust, Collaborative Applications

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    GIT-CC-95-09.pdf (243.3Kb)
    Date
    1995
    Author
    Chelliah, Muthusamy
    Ahamad, Mustaque
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    Abstract
    Traditional transaction models ensure robustness for distributed applications through the properties of view and failure atomicity. It has generally been felt that such atomicity properties are restrictive for a wide range of application domains; this is particularly true for robust, collaborative applications because such applications have concurrent components that are inherently long-lived and that cooperate. Recent advances in extended transaction models can be exploited to structure long-lived and cooperative computations. Applications can use a combination of such models to achieve the desired degree of robustness; hence, we develop a system which can support a number of flexible transaction models, with correctness semantics that extend or relax serializability. We analyze two concrete CSCW applications - collaborative editor and meeting scheduler. We show how a combination of two extended transaction models, that promote split and cooperating actions, facilitates robust implementations of these collaborative applications. Thus, we conclude that a system that implements multiple transaction models provides flexible support for building robust, collaborative applications.
    URI
    http://hdl.handle.net/1853/6681
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    • College of Computing Technical Reports [506]

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