Resource Isolation Policy

Last updated: 2021-03-29 10:18:21

This document describes three resource isolation policies of TencentDB for MySQL: basic, general, and dedicated.

Note:

  • The former "Basic Edition" has been renamed "basic single-node”, and the former "Single-node High IO Edition" has been renamed "general single-node".
  • Two-node and three-node instances support the general and dedicated policies. The dedicated policy is currently in beta; therefore, to purchase dedicated instances, please submit a ticket.
Resource Isolation Policy Description
Basic Only single-node instances support this policy. A basic single-node instance (formerly known as Basic Edition) supports computation-storage separation and uses cloud disks as underlying storage.
General
  • A general instance has exclusive use of the allocated memory and disk resources, but shares CPU resources with other general instances on the same physical machine.
  • By sharing CPU resources, a general instance enjoys higher specifications at a lower cost.
  • Disk capacity of a general instance is independent of its CPU and memory specifications.
  • Dedicated
  • A dedicated instance has exclusive use of CPU (CPU pinning configured), memory, and disk resources. It boasts long-term stable performance and won’t be affected by the behavior of other instances on the physical machine.
  • A dedicated instance with the highest configurations can monopolize a physical machine and all its resources.
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