Technical Characteristics

Compared with other open-source databases, openGauss provides multiple storage modes, NUMA-based kernel structure, and high availability.

• Multi-storage mode

  • Row-store, supporting frequent service data updates
  • Column-store, supporting service data appending and analysis
  • Memory table, supporting high throughput, low latency, and ultra-high performance

• NUMA-based kernel structure

  • Partitions key data structures to reduce data access conflicts.
  • NUMA-based key data structure, reducing the data structure access latency.
  • Cores are bound to key service threads to prevent inter-core thread drift.

• High availability (HA)

  • Replication between the primary and standby nodes can be deployed in synchronous or asynchronous mode.
  • Data page CRC check is supported. Damaged data pages are automatically restored by the standby node.
  • The standby node recovers in parallel and can be promoted to primary to provide services within 10 seconds.