Dev Tools · 2h ago
How to Right-Size RDS Instances Without Downtime
AWS RDS instance class changes typically cause 5–15 minutes of downtime. Three workarounds exist: Blue/Green Deployments (under 60-second cutover), read-replica promotion, or Multi-AZ failover. Blue/Green is the recommended 2026 default for MySQL, MariaDB, Postgres, and SQL Server.
Meridian48 take
The article provides practical, well-tested methods for zero-downtime resizing, though Blue/Green deployments incur extra cost during sync.
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