Urgent replication facility
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0 Petitions
Accused Products
Abstract
A system and method for expediting the replication of at least one specified object to a replica in a distributed computer system. A source object of a source replica determines that it has an urgent change to propagate through the distributed system, and informs a replication facility at the source replica of the urgent change. The facility extracts, or is provided with, the change information from that object, and the source replica communicates information representative of the change to a destination replica. A replication facility at the destination replica provides the change information to a destination replica object, which uses the information to make itself consistent with the source replica object.
100 Citations
38 Claims
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1-18. -18. (canceled)
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19. In a distributed computer system, a method of expediting the replication of a source object in a source computer to a destination replica object in a destination replica in the system wherein the state of the source object has changed from a first to a second state, comprising the steps of:
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identifying, by the source computer, a difference in the changed source object;
transmitting, by the source computer, the difference to the destination replica, receiving, by the destination replica, the transmitted difference, and applying, by the destination replica, the difference to the destination replica object. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. In a system of distributed computers, a system for expediting the replication of a source object which has changed at a source node to a counterpart object at a destination node, comprising:
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signaling means associated with the source object for initiating generating a signal at the source node indicating that the source object at the source node has changed and assigning an urgency value to the change with respect to a predetermined criteria, a control means connected to the signaling means for receiving the signal generated by the signaling means and in response communicating to request information representative of the change to the source object, and to receive the change information, a data communication mechanism at the source node connected to a data communication mechanism at the destination node for communicating information, representative of the change to the source object, from the source node to the destination node, and means at the destination node for applying the received change information to the counterpart object at the destination node such that the counterpart object at the destination node is consistent with the changed source object at the source node. - View Dependent Claims (28, 29)
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30. A computer readable medium having computer executable instructions for a method of expediting the replication of a source object in a source computer to a destination replica object in a destination replica in the system wherein the state of the source object has changed from a first to a second state, the steps comprising:
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identifying, by the source computer, a difference in the changed source object;
transmitting, by the source computer, the difference to the destination replica, receiving, by the destination replica, the transmitted difference, and applying, by the destination replica, the difference to the destination replica object. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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Specification