By implementing disaster recovery in a hot standby configuration, business systems can be restored more quickly in the event of a disaster. This function has the following two methods.
Continuous recovery method
Create a container environment for production and another one for disaster recovery. Store the production environment data in object storage, and continuously restore to the disaster recovery environment. This method enables quick recovery compared to the backup/restore method, but RPO (Recovery Point Objective) increases depending on the timing of regular backups.
Streaming replication method
Similarly to the continuous recovery method, create a container environment for production and another one for disaster recovery. Use streaming replication methods to synchronize data to the disaster recovery environment. This method enables faster recovery compared to the backup/restore method, lower RPO compared to the continuous recovery method, and real-time data synchronization. However, because network settings for the streaming replication method are required, the management cost is high, and there is a slight impact on the performance of the database in the production environment.