The performance of MySQL can degrade when it encounters burst traffic and resource-intensive statements. RDS for MySQL limits concurrency for burst traffic and special types of SQL to improve database stability.

Use cases

The system has sudden high concurrency and resource-intensive SQL queries. A typical scenario is when the absence of proper indexes causes numerous full table scans, leading to a sharp decline in database performance.

Supported version

MySQL 5.7 version, and the kernel minor version is MySQL 5.7.32_20231015 and above.

MySQL 8.0 version, and the kernel minor version is MySQL 8.0.32_20231015 and above.

MySQL 8.4 version, and the kernel minor version is MySQL 8.4.7_20260415 and above.

tip

You can view the kernel minor version of an instance by Viewing instance information. If the kernel minor version of your instance is not within the supported kernel minor version range, you can Manually upgrading the instance kernel minor version.

Instructions

For details about how to use SQL throttling, refer to SQL throttling.

Last updated: 2026.05.28 15:17:49

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