PCD Question 107

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• 1

  Answer is C When making backward-incompatible changes to an API, it's important to provide a way for existing callers to continue using the old API while still supporting new callers who use the new API. One way to do this is by deploying a new version of the Cloud Function that includes the new API, and leaving the old function as-is. By using Cloud Endpoints you can create an API Gateway that can handle multiple versions of the API, so that requests to different versions of the API can be routed to the corresponding Cloud Function. This allows you to maintain both versions of the API and have control over which version is exposed to the users. This approach allows you to continue supporting existing callers while also introducing new features to the application through the new version. Also, it gives you a lot more flexibility in terms of rollout, testing, and monitoring.

• Chose C2

  https://cloud.google.com/architecture/migrating-a-monolithic-app-to-microservices-gke#versioning Answer C

• Chose D1

  Answer D feels more appropriate based on the below URL: https://cloud.google.com/endpoints/docs/openapi/versioning-an-api#backwards-incompatible