Blue-green deployment is a software deployment technique that utilizes two identical production environments (a "blue environment" and a "green environment") to minimize downtime and risk when deploying updates. It works by deploying the new version of the application to the inactive environment (e.g. green), while the current version is still running on the blue environment. Once the new version is tested and verified, traffic is switched from the blue to the green environment, making the new version live[1][2].
The key steps in a blue-green deployment are:
Set up two identical production environments (blue and green)
Deploy the new version to the inactive environment (e.g. green)
Test and validate the new version in the green environment
Redirect traffic from the blue to the green environment, making the new version live
Monitor the green environment for any issues
If needed, quickly roll back by switching traffic back to the blue environment
Promote the green environment to blue for the next deployment cycle[1][2]
Blue-green deployments provide several benefits:
Minimal downtime during deployments
Easy rollback capability by switching back to th...
