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How do you handle API versioning and deprecation in Slim Framework?

How do you handle API versioning and deprecation in Slim Framework?

Answer: In Slim Framework, API versioning can be handled using different approaches, such as including the version in the URL (e.g., `/api/v1/resource`) or in the request headers. To manage deprecation, you can implement a strategy that involves:

1. Versioning in Routing: Create separate route groups for each API version.
2. Documentation: Clearly document the versioning strategy and deprecate endpoints in API documentation.
3. Response Headers: Use response headers to indicate deprecated endpoints (e.g., `Deprecation: `).
4. Graceful Notifications: Provide notifications in the response body to inform users of deprecated endpoints and suggest alternatives.
5. Timeline for Deprecation: Announce a timeline for deprecation and eventual removal of old versions.

This approach ensures that users can transition smoothly to newer API versions without breaking changes.

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