A Method for Maintaining Multi-Replica Consistency in Heterogeneous Clusters Based on Transaction Redo
A heterogeneous cluster and multi-copy technology, applied in the database field, can solve problems such as data inconsistency, the actual execution sequence cannot be guaranteed to be consistent, and log formats are different, achieving high availability, fast consistency maintenance, and support for heterogeneity
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0030] A transaction redo-based multi-copy consistency maintenance method for heterogeneous clusters is to use the principle that the actual execution order of concurrent transactions is the order in which transactions are submitted. By tracking active transactions on the primary data node, query recording is performed in accordance with the order in which transactions are submitted. The method of propagating the statement sequence organized by the transaction commit order recorded by the primary data node to the replica data node for transaction redo. This method can ensure that the logical operations of the replica data and the master data are completely consistent at the transaction level, thereby ensuring the final consistency between the replica data and the master data. Since the recording occurs in the transaction management layer of the main data node...
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