AWS Database Blog
Managing IP address exhaustion for Amazon RDS Proxy
In this post, you will learn how to address IP address exhaustion challenges when working with Amazon RDS Proxy. For customers experiencing IP exhaustion with RDS Proxy, migrating to IPv6 address space can be an effective solution if your workload supports IPv6. This post focuses on workloads that cannot support IPv6 address space and provides an alternative approach using IPv4 subnet expansion. The solution focuses on expanding your Amazon Virtual Private Cloud (Amazon VPC) CIDR range, establishing new subnets, and executing a carefully planned switching of your proxy to a new subnet configuration.
Migrate io1 to io2 Block Express storage for Amazon RDS workloads using blue/green deployments
Amazon RDS provides two storage types: Provisioned IOPS SSD and General Purpose SSD. They differ in performance characteristics and price, which means that you can tailor your storage performance and cost to the needs of your database workload. In this post, we show how you can migrate from io1 to io2 Block Express Provisioned IOPS SSD storage.

