PROCÉDÉ DE SYNCHRONISATION ENTRE UNE BASE DE DONNÉES PRIMAIRE ET UNE BASE DE DONNÉES DE SECOURS, SYSTÈME DE BASE DE DONNÉES ET DISPOSITIF

摘要

The example embodiments of the present disclosure disclose a synchronization method, database system, and device between a primary database and a secondary database. The method comprises: 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.