Google Professional Cloud Developer Question 329
Select 3Google Cloud PlatformYou are designing a new version of an existing API using Apigee. To ensure backward compatibility and a smooth migration for consumers, what practices should you follow when releasing the new version?
- A
Use a version number in the API URL to distinguish between versions.
- B
Deprecate the previous API version immediately after releasing the new version.
- C
Clearly document the changes introduced in the new version and provide migration guides.
- D
Introduce breaking changes in the same API version to avoid creating multiple versions.
- E
Use headers or query parameters to specify the API version instead of including it in the URL.
Show answer and explanation
Correct answers: A, C, E
Explanation
Versioning APIs is critical to maintaining backward compatibility and ensuring a smooth transition for API consumers. Including the version in the URL or using headers/query parameters for versioning helps distinguish between versions. Additionally, clear documentation and migration guides help consumers adapt to changes. Avoiding immediate deprecation and maintaining a transition period ensures minimal disruption. Breaking changes should always be part of a new version to prevent unexpected failures.
- A. Correct.
Using version numbers in the API URL (e.g., /v1/, /v2/) is a common and recommended practice for versioning, as it clearly separates versions and avoids ambiguity.
- B. Incorrect.
Deprecating the previous version immediately can disrupt consumers who need time to migrate. It's better to provide a transition period.
- C. Correct.
Providing clear documentation and migration guides is crucial for helping API consumers understand the changes and migrate without issues.
- D. Incorrect.
Introducing breaking changes within the same version violates the principles of API versioning. Breaking changes should always be part of a new version.
- E. Correct.
Specifying the API version via headers or query parameters is another valid approach, as long as it is well-documented and consistently implemented.