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Hello odemsy,
Thank you for your insightful question! I appreciate the opportunity to clarify why canary release deployment is the most appropriate strategy in this scenario.
The key difference between canary and blue/green deployments lies in how resources are provisioned and how traffic is gradually directed to the new API version.
In a blue/green deployment, two environments (the “blue” environment, which is the current version, and the “green” environment, which is the new version) are provisioned and maintained simultaneously. This approach requires duplicating resources for both environments, which can increase costs due to maintaining two parallel environments for the duration of the deployment process. The traffic is then switched from the blue environment to the green environment once the green environment is verified and fully ready for production. While this provides good isolation and testing, additional environment provisioning and maintenance can be resource-intensive and costly.
On the other hand, in a canary deployment, you don’t need to provision a whole new set of resources. Instead, you deploy the new API version to a small subset of users and gradually increase the traffic to the new version as it proves stable. This allows you to minimize the risk of issues affecting many users and doesn’t require maintaining separate full-scale environments. The cost is lower, and you only adjust traffic distribution within a single environment, not duplicating the entire infrastructure.
To address your point, while both deployment strategies involve controlling the exposure of the new version to users, the canary deployment allows for a more gradual and controlled rollout without the need to fully replicate environments. It offers a way to test and verify the new version with a small user base before scaling up, making it cost-effective and easier to manage.
I hope this helps clarify any confusion you might have. Please feel free to ask if you have any further questions!
Regards,
Nikee @ Tutorials Dojo
