Fujitsu Enterprise Postgres offers both high reliability features that prioritize data protection and preservation to minimize the risk of system downtime and data loss, and high availability features that prioritize minimizing system downtime, thereby enhancing business continuity. You can build the following cluster systems using these features. By selecting the optimal features according to system requirements and operational forms, you can achieve stable system operation.
We configure duplication of primary and standby servers within the same region, ensuring reliable data synchronization between primary and standby servers through synchronous replication. This particularly guarantees high data reliability. Additionally, a failure detection function, which is an essential element for continuous database operation, is also implemented. For example, if a failure occurs in the primary server, operations can be continued by switching the primary server through automatic failover. This achieves high availability.
This configuration is suitable when you want to perform redundancy and switching at the database level.
Refer to "1.3.1 Database Multiplexing".
Multi-master ReplicationThe databases located in multiple regions (physically separate locations like data centers) are all configured as masters (writable). Data synchronization is performed bidirectionally between each region, allowing business processes to be executed simultaneously across multiple regions. Furthermore, even if a failure occurs in one region, business operations can continue in other regions. This configuration provides high availability and scalability while maintaining high data reliability.
This configuration is suitable for disaster recovery operations, such as placing regions in remote locations.
Refer to "1.3.2 Multi-master Replication".
Cluster system integrated with PRIMECLUSTERIn a cluster system integrated with PRIMECLUSTER, the entire system, including the OS, applications, and databases, can be switched over through failover in the event of a failure. Failover decisions are centrally managed by PRIMECLUSTER.
This configuration is suitable when you want to automatically switch over the entire system in a cluster system within the same region.
Cluster system using PatroniThis configuration uses Patroni, with multiple read replica servers for each primary server within the same region.
This configuration is suitable when high availability is prioritized and you want to actively utilize read replica servers for load balancing read operations.
Refer to "1.3.4 Cluster System Using Patroni".
