Amazon RDS for MySQL 26.10 is now available in Amazon RDS Database Preview Environment

Amazon RDS for MySQL 26.10 Preview Available

MySQL 26.10 is now available in the Amazon RDS Database Preview Environment. This release includes bug fixes, security patches, and performance improvements for READ COMMITTED workloads.

Key Updates

• Performance Improvements: Read-view objects can now be reused, eliminating the global mutex on closure for busy READ COMMITTED workloads on NUMA systems.
• Error Log Enhancements: The error log now reports warnings when the history-list length crosses innodb_max_purge_lag and when purge lag begins delaying DML, helping detect purge backlogs before they affect performance.

What to do

• Evaluate the pre-release of MySQL 26.10 on Amazon RDS for MySQL.
• Monitor the error log for new warnings related to purge lag.

Source: AWS release notes

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