Amazon Relational Database Service (Amazon RDS) now offers dynamic connection scaling for IAM database authentication, allowing connection rates to scale with instance resources.

IAM database authentication performance now scales with available instance resources, enabling enterprise workloads to leverage IAM authentication for high-volume connection patterns. The number of new IAM authentication requests your instance can handle depends on available resources and workload characteristics. For optimal performance, we recommend reusing IAM user or IAM assumed role principals to generate authentication tokens, or reusing the authentication tokens themselves, when possible.

This update is available in all AWS Regions, including the AWS GovCloud (US) Regions, where IAM database authentication is supported for Amazon Aurora and Amazon RDS database engines including PostgreSQL, MySQL, and MariaDB. To learn more, visit the IAM database authentication documentation.