VARIABLE SYNCHRONICITY BETWEEN DUPLICATE TRANSACTIONS

摘要

A data processing system, computer program product, and data processing system for providing an adjustable level of synchronicity between duplicated transactions is disclosed. An acceptable level of lag between transactions is specified. Duplicated transactions performed at redundant systems are allowed to lag behind the corresponding transactions at the primary system by the specified amount of lag. Lag may be measured in terms of number of transactions, an amount of data, amount of time, or using any other suitable metric.