API Design · Senior · Question 44 of 75

How can an API support offline-first mobile clients?

✓Correct answer: Provide delta sync (changes since a cursor or version), idempotent writes with client-generated IDs, and conflict detection
2Disable writes when offline
3Require clients to download everything on every launch

Explanation

Client-generated IDs (UUIDs) let the app create records offline and sync them later without duplicates.

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