Urgent replication facility
First Claim
1. In a distributed computer system, a method of expediting the replication 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:
- 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;
applying, by the destination replica, the difference to the destination replica object;
extracting destination change information from the destination replica object;
transmitting information to a second destination replica corresponding to the destination change information;
receiving the transmitted information at the second destination replica;
extracting the change information from the received information at the second destination replica;
providing the change information to a replica object of the second destination replica; and
applying the destination change information to the replica object of the second destination replica.
1 Assignment
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.
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Citations
20 Claims
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1. In a distributed computer system, a method of expediting the replication 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; applying, by the destination replica, the difference to the destination replica object; extracting destination change information from the destination replica object; transmitting information to a second destination replica corresponding to the destination change information; receiving the transmitted information at the second destination replica; extracting the change information from the received information at the second destination replica; providing the change information to a replica object of the second destination replica; and applying the destination change information to the replica object of the second destination replica. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A commuter 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; applying, by the destination replica, the difference to the destination replica object; extracting destination change information from the destination replica object; transmitting information to a second destination replica corresponding to the destination change information; receiving the transmitted information at the second destination replica; extracting the change information from the received information at the second destination replica; providing the change information to a replica object of the second destination replica; and applying the destination change information to the replica object of the second destination replica. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A distributed computer system that expedites the replication of a source object in a source node to a destination replica object in a destination node in the system, wherein the state of the source object has changed from a first to a second state, the system comprising:
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a source node that performs the steps of; identifying a difference in the changed source object; transmitting the difference; a destination node that performs the steps of; receiving the transmitted difference; applying the difference to the destination replica object; extracting destination change information from the destination replica object; transmitting information corresponding to the destination change information; and a second destination node that performs the steps of; receiving the transmitted information; extracting the destination change information from the received information; providing the change information to a replica object of the second destination node; applying the destination change information to the replica object of the second destination node. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification