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TencentDB for MySQL
    Documentation
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    Overview

    Last updated: 2024-05-14 16:11:10
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      TencentDB for MySQL supports four types of architectures: single-node (cloud disk edition), two-node (formerly high availability edition), and three-node (formerly finance edition),Cluster Edition (cloud disk edition).
      Note:
      The single-node (cloud disk edition) architecture is currently available in the regions of Shanghai, Beijing, Guangzhou, Chengdu, Hong Kong of China, Singapore, and Frankfurt. Other regions will be available gradually in the future.
      The two-node (formerly high availability edition) employs a one-primary-one-replica mode. Only the primary database provides access services, and the replica database is dedicated for disaster recovery without providing access.
      The three-node (formerly finance edition) employs a one-primary-two-replica mode. Only the primary database provides access services, and the two replica databases are dedicated for disaster recovery without providing access.
      The Cluster Edition (cloud disk edition) employs a one-primary-multiple-replica mode. The primary node (read-write node) provides read-write services, and the replica nodes (read-only nodes) provide read-only access services.

      Viewing the instance architecture

      For instances to be purchased, enter the TencentDB for MySQL purchase page, and select the architecture in the Architecture section.
      For purchased instances, log in to the TencentDB for MySQL console, find the target instance from the instance list, and view its architecture in the Configuration Info section.

      Architecture comparison

      Architecture
      Cluster Edition
      Two-Node
      Three-Node
      Single-Node
      Standard, Enhanced
      General
      General
      General (Read-Only Instance)
      Basic Type
      Supported Versions
      MySQL 5.7, 8.0
      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-Primary-Multiple-Replica (Up to 5 Read-Only Nodes)
      One-Primary-One-Replica
      One-Primary-Two-Replica
      Single Node
      Single Node
      Primary-Replica Replication Mode
      Asynchronous/Semi-Synchronous (Default)
      Asynchronous (Default), Semi-Synchronous
      Asynchronous (Default), Fully Synchronous, Semi-Synchronous
      -
      -
      Instance Availability
      99.95%
      99.95%
      99.99%
      -
      -
      Underlying Storage
      Tremendous SSD Cloud Disk
      Enhanced SSD Cloud Disk
      SSD Cloud Disk
      Local NVMe SSD Disk
      Local NVMe SSD Disk
      Local NVMe SSD Disk
      Enhanced SSD Cloud Disk
      SSD Cloud Disk
      IOPS Performance
      Tremendous SSD Cloud Disk
      Benchmark Performance :
      Random IOPS = min{4000+Capacity(GiB)×100, 50000} Additional Performance :
      Maximum IOPS = min{Additional Performance Value×128, 950000}
      Enhanced SSD Cloud Diske
      Benchmark Performance :
      Random IOPS = min{1800+Capacity(GiB)×50, 50000} Additional Performance :
      Maximum IOPS = min{Additional Performance Value×128, 50000}
      SSD Cloud Disk
      Random IOPS = min{1800+Capacity(GiB)×30, 26000}
      Up to 240,000 IOPS
      Up to 240,000 IOPS
      Up to 240,000 IOPS
      Enhanced SSD Cloud Disk
      Benchmark Performance :
      Random IOPS = min{1800+Capacity(GiB)×50, 50000} Additional Performance :
      Maximum IOPS = min{Additional Performance Value×128, 50000}
      SSD Cloud Disk
      Random IOPS = min{1800+Capacity(GiB)×30, 26000}
      Throughput Performance (MB/s)
      Tremendous SSD Cloud Disk
      Benchmark Performance :
      Throughput = min{120+Capacity(GiB)×0.5, 350} Additional Performance :
      Throughput = min{Additional Performance Value×1, 3650}
      Enhanced SSD Cloud Disk
      Benchmark Performance :
      Throughput = min{120+Capacity(GiB)×0.5, 350} Additional Performance :
      Throughput = min{Additional Performance Value×1, 650}
      SSD Cloud Disk
      Throughput = min{120+Capacity(GiB)×0.2, 260}
      -
      -
      -
      Enhanced SSD Cloud Disk
      Benchmark Performance :
      Throughput = min{120+Capacity(GiB)×0.5, 350} Additional Performance :
      Throughput = min{Additional Performance Value×1, 650}
      SSD Cloud Disk
      Throughput = min{120+Capacity(GiB)×0.2, 260}
      Applicable Scenarios
      Applications in various industries such as gaming, the internet, Internet of Things, retail and e-commerce, logistics, insurance, and securities.
      Applications in various industries such as gaming, the internet, Internet of Things, retail and e-commerce, logistics, insurance, and securities.
      Applications in various industries such as gaming, the internet, Internet of Things, retail and e-commerce, logistics, insurance, and securities.
      Applications with Read/Write Separation Requirements
      Personal learning, small websites, non-core small enterprise systems, and medium-to-large enterprise development and testing environments.

      References

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