Technical Characteristics

Compared with other open-source databases, openGauss has the following characteristics:

• High performance

  • Provides the multi-core architecture-oriented concurrency control technology and Kunpeng hardware optimization, and achieves that the TPC-C benchmark performance reaches 1,500,000 tpmC in Kunpeng 2-socket servers.
  • Uses NUMA-Aware data structures as the key kernel structures to adapt to the trend of using multi-core NUMA architecture on hardware.
  • Provides the SQL bypass intelligent fast engine technology.
  • The Ustore storage engine is provided for frequent update scenarios.

• High availability (HA)

  • Supports multiple deployment modes, such as primary/standby synchronization, primary/standby asynchronization, and cascaded standby server deployment.
  • Supports data page cyclic redundancy check (CRC), and automatically restores damaged data pages through the standby node.
  • Recovers the standby node in parallel and promots it to primary to provide services within 10 seconds.
  • Log replication and primary selection framework are provided based on the Paxos distributed consistency protocol.

• High security

  Supports security features such as fully-encrypted computing, access control, encryption authentication, database audit, and dynamic data masking to provide comprehensive end-to-end data security protection.

• Easy O&M

  • Provides AI-based intelligent parameter tuning and index recommendation to automatically recommend AI parameters.
  • Provides slow SQL diagnosis and multi-dimensional self-monitoring views to help you understand system performance in real time, predict metric trends, detect exceptions, and analyze root causes of slow SQL statements.

• Fully open

  • Adopts the Mulan Permissive Software License, allowing code to be freely modified, used, and referenced.
  • Fully opens database kernel capabilities.
  • Provides excessive partner certifications, training systems, and university courses.