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postgresql集群方案选型

时间:2022-03-14 03:46

High Availability, Load Balancing, and Replication Feature Matrix

Feature Shared Disk Failover File System Replication Hot/Warm Standby Using PITR Trigger-Based Master-Standby Replication Statement-Based Replication Middleware Asynchronous Multimaster Replication Synchronous Multimaster Replication
Most Common Implementation NAS DRBD PITR Slony pgpool-II Bucardo  
Communication Method shared disk disk blocks WAL table rows SQL table rows table rows and row locks
No special hardware required   ? ? ? ? ? ?
Allows multiple master servers         ? ? ?
No master server overhead ?   ?   ?    
No waiting for multiple servers ?   ? ?   ?  
Master failure will never lose data ? ?     ?   ?
Standby accept read-only queries     Hot only ? ? ? ?
Per-table granularity       ?   ? ?
No conflict resolution necessary ? ? ? ?     ?

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