System and method for efficiently synchronizing cache and persistant data in an object oriented transaction processing system
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United States of America Patent
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Jan 28, 2003
Issued Date -
N/A
app pub date -
Oct 14, 1998
filing date -
Sep 16, 1994
priority date (Note) -
Expired
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Abstract
A system and method for effectively synchronizing data in an object oriented distributed transaction processing system employing a multilevel data store. Each object that maintains first-level volatile data registers as a synchronization object if unsynchronized changes to that data exist. A register object at each node tracks synchronized objects registered for that node. Each registered synchronization object, in turn, registers with its superior node when registered synchronization objects are present. A hierarchy of registered synchronization objects and synchronization objects is thereby created. The transaction termination process transmits a pre-prepare message to the registered synchronization hierarchy providing each synchronization object an opportunity to flush its data to the second-level persistent data store. The hierarchical structure of registered objects ensures that the minimum number of messages are transmitted over the network.
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