Tuple-based information space for data exchange between applications
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United States of America Patent
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Dec 31, 2002
Issued Date -
N/A
app pub date -
Dec 9, 1999
filing date -
May 5, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mechanism for providing application-layer information persistence and exchange is provided. For an exemplary embodiment, an information space is constructed to span a group of one or more server systems. The information space is based on the tuple-space paradigm first introduced for the Linda coordination model. A coordination entity manages storage of tuples within the information space. Applications access tuples by consulting a local cache of known tuple locations. If the location of a tuple is known, access is directed to the known location. If the location is unknown, the coordination is queried to determine the correct tuple location. If a tuple has moved, the previously storing server generates a re-route exception. This causes the accessing application to query the coordination entity, retry the access, and update the local cache.
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