Cloud Native Development Patterns and Best Practices

Canary deployment

The canary deployment approach improves on the blue-green approach by routing only a portion of users to the new version, as shown in the following diagram, to ensure it is working properly before switching over all the traffic. The name comes from the mining practice of bringing a canary into the mine because the bird is more susceptible to toxic fumes and would provide an early warning sign to the miners when the bird stopped singing.

From an infrastructure standpoint, a canary deployment looks pretty much the same as the blue-green deployment. The major difference is with the database. Both the old and the new version ...