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How can you ensure idempotency in a batch delete REST API when deleting multiple resources?

hard📝 Application Q9 of 15
Rest API - Batch and Bulk Operations

How can you ensure idempotency in a batch delete REST API when deleting multiple resources?

AReturn error if any resource is missing in the batch
BAllow repeated delete requests to succeed without error if resources are already deleted
CRequire a unique token for each delete request
DUse POST method instead of DELETE
Step-by-Step Solution
Solution:

  1. Step 1: Understand idempotency in REST

    Idempotency means repeating the same request has the same effect as once.

  2. Step 2: Apply to batch delete

    Allowing repeated deletes to succeed even if resources are missing ensures idempotency.

  3. Final Answer:

    Allow repeated delete requests to succeed without error if resources are already deleted -> Option B

  4. Quick Check:

    Idempotent batch delete = success on repeated calls [OK]
Quick Trick: Idempotent deletes succeed even if resource missing [OK]
Common Mistakes:
MISTAKES
  • Failing on missing resources breaks idempotency
  • Using POST breaks REST semantics
  • Requiring unique tokens unnecessarily

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