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How can you ensure backward compatibility when introducing a new API version?

hard🚀 Application Q9 of Q15
Rest API - Versioning Strategies
How can you ensure backward compatibility when introducing a new API version?
AForce all clients to upgrade instantly
BDelete old versions immediately
CChange old versions without notice
DKeep old versions active and maintain their behavior
Step-by-Step Solution
Solution:

  1. Step 1: Understand backward compatibility

    Backward compatibility means old clients continue working without changes.

  2. Step 2: Identify best practice

    Keeping old versions active and stable ensures clients are not broken.

  3. Final Answer:

    Keep old versions active and maintain their behavior -> Option D

  4. Quick Check:

    Backward compatibility = maintain old versions [OK]
Quick Trick: Keep old versions stable to avoid breaking clients [OK]
Common Mistakes:
MISTAKES
  • Deleting old versions too soon
  • Changing old versions unexpectedly
  • Forcing instant client upgrades

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