Enhanced Monitoring is now available for Amazon RDS MySQL, MariaDB and Amazon Aurora

You can now get deeper visibility into the health of your Amazon RDS instances in real time with Enhanced Monitoring for Amazon RDS. It provides a comprehensive set of over 50 new system metrics and aggregated process information for your instances, at granularity of up to 1 second. You can visualize the metrics on the RDS console, and also integrate them with CloudWatch and third-party applications.

Source: Amazon Web Services News