Achieve continuous delivery with blue/green deployments using Amazon DocumentDB database cloning and AWS DMS

This article discusses how to achieve continuous delivery with blue/green deployments using Amazon DocumentDB database cloning and AWS Database Migration Service (DMS). It outlines a strategy to maintain two identical but separate production and staging environments (blue and green) for seamless application updates and rollbacks.

Specifically, the article covers:

• Solution overview of blue/green deployment architecture using Amazon DocumentDB cloning and AWS DMS change data capture (CDC)
• How Amazon DocumentDB fast cloning works using copy-on-write protocol
• Steps to set up blue/green environments and apply changes like database upgrades in the staging (green) environment
• Procedures to cut over production traffic from blue to green environment using DNS routing
• Reverse CDC replication to sync green changes back to blue for easy rollback
• Post-cutover activities and decommissioning old (blue) environment