Persistent stateful component-based applications via automatic recovery
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United States of America Patent
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-
Dec 2, 2008
Grant Date -
Mar 24, 2005
app pub date -
Oct 29, 2004
filing date -
Sep 4, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Persistent components are provided across both process and server failures, without the application programmer needing take actions for component recoverability. Application interactions with a stateful component are transparently intercepted and stably logged to persistent storage. A 'virtual' component isolates an application from component failures, permitting the mapping of a component to an arbitrary 'physical' component. Component failures are detected and masked from the application. A virtual component is re-mapped to a new physical component, and the operations required to recreate a component and reinstall state up to the point of the last logged interaction is replayed from the log automatically.
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