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March 2025

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Has anyone implemented InnoDB redo log-based physical replication?
by Otto Kekäläinen 03 Mar '25

03 Mar '25

Hi, Has anyone attempted or seen any existing implementations "physical" replication between two MariaDB instances, where a secondary read-only instance would follow the primary by directly reading and applying page changes from the primary's redo logs? The secondary instance would start (and restart if necessary) using a full copy of the data from the primary instance, but while running keep itself current by reading redo logs from the primary instance, and apply pages based on the increasing LSN number. I call this "physical" replication to distinguish it from normal logical replication based on e.g. binlogs, and this would obviously only work for InnoDB. Thanks, Otto

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