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Overview

Last updated: 2021-03-29 10:40:05

TencentDB for MySQL supports three types of architectures: single-node (formerly Basic Edition), two-node (formerly High IO Edition), and three-node (formerly Finance Edition).

Note：
General single-node instances are formerly known as Single-node High IO Edition instances.

Viewing Instance Architectures

For instances to be purchased, log in to the TencentDB for MySQL purchase page and select the architecture in the Architecture section.
For purchased instances, log in to the MySQL console, locate the desired instance in the instance list, and view its architecture in the Configuration column.

Architecture Comparison

Architecture	Two-node	Three-node	Single-node
Resource isolation policy	General	General	General	Basic
Supported version	MySQL 5.5, 5.6, 5.7, and 8.0	MySQL 5.6, 5.7, and 8.0	MySQL 5.6, 5.7, and 8.0	MySQL 5.7
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	Premium cloud disk
Performance	Up to 240,000 IOPS	Up to 240,000 IOPS	-	IOPS calculation formula: {min 1,500 + 8 x disk capacity, max 4,500}
Use cases	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

TencentDB for MySQL supports MySQL 8.0, 5.7, 5.6, and 5.5. For more information, please see Database Versions.
TencentDB for MySQL supports the following instance types: source instances and read-only replicas. For more information, please see Database Instance Types.
TencentDB for MySQL supports different features in different architectures. For more information, please see List of Feature Differences.