# RDS Proxy joins Blue/Green Deployment switchovers > RDS Blue/Green Deployments can now redirect connections through RDS Proxy, putting application recovery behavior back into the database rehearsal plan. Canonical URL: https://www.devobs.io/news/news-aws-rds-proxy-blue-green/ By: Ines Costa Published: 2026-09-06T11:58:54.633Z Updated: 2026-09-06T11:58:54.633Z Event date: 2026-04-09 Section: Data Amazon RDS Blue/Green Deployments added RDS Proxy support on April 9. AWS says the integration detects when the green database becomes production and redirects connections, avoiding the DNS propagation delay involved in reconnecting to the new target. ## The connection path changes The [announcement](https://aws.amazon.com/about-aws/whats-new/2026/04/rds-proxy-blue-green/) applies to single-Region switchovers and lists Aurora MySQL and PostgreSQL compatibility, plus RDS for MySQL, PostgreSQL, and MariaDB. Availability follows commercial Regions where RDS Proxy is offered. For a database team, this makes the proxy part of the release procedure rather than merely a steady-state connection component. The important outcome is how quickly the application resumes useful work, not just when the database control plane declares the switchover complete. Our analysis: a faster route to the replacement database does not settle the fate of every application transaction. Teams still need an explicit response to interrupted requests and uncertain write outcomes. ## Rehearse through the actual client Run a staging switchover using the same pool configuration and request patterns as production. Observe connection errors, pool recovery, transaction retries, and customer-facing latency. Include a long transaction and a request whose result is lost at the transition. Check that retries are appropriate for the operation. Repeating a read and repeating a payment-related write are different application decisions, even when both failures arrive as a connection error. Keep the release gate focused on evidence from the whole path: application, proxy, database, and monitoring. Record the recovery behavior in the database upgrade runbook and identify the person who can stop a rollout if the measured interruption exceeds the agreed window. ## Source references -