Blue-green deployments enable zero-downtime releases, but become complex when applications share databases. This guide demonstrates the expand-contract pattern for managing database schema changes during blue-green deployments on AWS ECS. The pattern works in three phases: expand (add new schema elements while keeping old
Table of contents
Table of ContentsThe Problem with State in Blue-Green DeploymentsDatabase Migration Strategies for Blue-GreenHandling Stateful Services in ECSImplementation: End-to-End ExampleRollback StrategiesMonitoring During DeploymentsBest PracticesWhen NOT to Use Blue-GreenCleanupConclusionFurther ResourcesSort: