Monitoring multithreaded replication in Amazon RDS for MySQL, Amazon RDS for MariaDB, and Aurora MySQL

This article provides a comprehensive guide to monitoring multithreaded replication (MTR) in Amazon RDS for MySQL, RDS for MariaDB, and Aurora MySQL. It covers several key methods for tracking and troubleshooting replication performance:

• Using SHOW REPLICA STATUS command to view replication status
• Leveraging Performance Schema tables for detailed monitoring
• Creating custom database views to analyze worker thread performance
• Examining engine error logs for statistical information

Key monitoring techniques include:

• Tracking worker thread activity and errors
• Identifying transaction dependencies and processing bottlenecks
• Analyzing replication lag and worker thread utilization
• Using Performance Schema and custom views to gain deeper insights

The article emphasizes that monitoring multithreaded replication is an iterative process requiring careful parameter tuning and continuous performance optimization.