Alibaba Group Holding Limited
Synchronization between primary database and secondary database

Abstract:

A method including acquiring, by a primary database, in response to a transaction commit request, a log difference between a transaction log of the primary database and a transaction log that has been synchronized to a secondary database; suspending a transaction commit operation if the log difference is greater than a first threshold; and executing the transaction commit operations if the log difference is less than or equal to the first threshold.