EXACTLY ONCE DATA FRAMEWORK COMPUTER READABLE STORAGE MEDIUM
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United States of America Patent
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Issued Date -
N/A
app pub date -
Apr 21, 2008
filing date -
Sep 6, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A computer readable storage medium stores instructions for managing objects in a clustered network. Several clustered servers are in communication with a file system containing at least one copy of a data object. A distributed consensus algorithm is used to select a host server. The selected host server can contain a copy of the data object, such as in local cache, providing access to the local copy to any other server in the cluster. Any change made to an item hosted by the host server can also be updated in the file system. If the host server becomes unable to host the object, a new host can be chosen using the distributed consensus algorithm. The other servers are then notified of the new host by multicast messaging.
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