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8 years ago

New replication algorithm prevents thousand-fold increase in deadlocks

The dangers of replication and a solution
Jim Gray, Pat Helland, Patrick O’Neil, Dennis Shasha

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Update anywhere-anytime-anyway replication can become unstable with increased workload, leading to a significant rise in deadlocks or reconciliations. Master copy replication methods can help reduce this issue. A new two-tier replication algorithm allows mobile apps to suggest update transactions that can later be applied to a master copy, preventing instability seen in other replication methods.