Back to feed
Dev.to
Dev.to
7/1/2026
How to right-size RDS instances without downtime

How to right-size RDS instances without downtime

Short summary

RDS instance resizing causes 5-15 minutes of downtime by default. Blue/Green Deployments enable zero-downtime cutover in under 60 seconds by creating a synchronized standby. Alternative approaches include read replica promotion or Multi-AZ failover; preventive monitoring with Performance Insights avoids unnecessary resizing.

  • •RDS class changes require rebooting, causing 5-15 min downtime in the default workflow
  • •Blue/Green Deployments provide zero-downtime resizing in <60 seconds (MySQL, MariaDB, PostgreSQL, SQL Server)
  • •Monitoring via Performance Insights and CloudWatch alarms prevents over/underprovisioning cycles

Generated with AI, which can make mistakes.

Read full article at Dev.to

Is this a good recommendation for you?

Comments

Failed to load comments. Please try again.

Explore more

Beyond the Lift-and-Shift: Real-Time MySQL Migration to AWS RDS with GoldenGate 19c
Dev.to
Twenty four years, ten DB migrations, zero downtime
Dev.to
Deploying Applications with Blue-Green Deployment: A Real-World Example
Dev.to
Deploying MySQL on RDS and Joining Tables Like It's Production
Dev.to