TencentDB for MySQL supports three types of architectures: single-node (cloud disk edition), two-node (formerly high availability edition), and three-node (formerly finance edition).
Note:The single-node architecture of cloud disk edition is currently supported in Shanghai, Chengdu, Guangzhou, Beijing, and Hong Kong (China) regions and will be available in more regions in the future.
Architecture | Two-node | Three-node | Single-node | |
---|---|---|---|---|
Resource isolation policy | General | General | General (read-only instance) | Basic |
Supported version | MySQL 5.5, 5.6, 5.7, 8.0 | MySQL 5.6, 5.7, 8.0 | MySQL 5.6, 5.7, 8.0 | MySQL 5.7, 8.0 |
Node | One source, one replica | One source, two replicas | Single node | Single node |
Source-replica replication mode | Async (default), semi-sync | Async (default), strong sync, and semi-sync | - | - |
Instance availability | 99.95% | 99.99% | - | - |
Underlying storage | Local NVMe SSD | Local NVMe SSD | Local NVMe SSD | SSD cloud disk Enhanced SSD cloud disk |
Performance | Up to 240,000 IOPS | Up to 240,000 IOPS | Up to 240,000 IOPS | min{1800 + 30 * capacity (GB), 26000} min{120 + 0.2 * capacity (GB), 260} min{1800 + 50 * capacity (GB), 50000} min{120 + 0.5 * capacity (GB), 350} |
Scenario | Gaming, internet, IoT, retail, e-commerce, logistics, insurance, securities, etc. | Gaming, internet, IoT, retail, e-commerce, logistics, insurance, securities, etc. | Applications with read/write separation requirements | Personal learning, small websites, non-core small enterprise systems, and medium-to-large enterprise development and testing |
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