In a Flutter app, if a user makes changes to data in offline mode, which approach would you use to ensure data consistency when the app goes back online?
- Data Polling
- Offline Data Queues
- Optimistic Concurrency Control
- Pessimistic Concurrency Control
The Optimistic Concurrency Control approach is suitable for ensuring data consistency in a Flutter app when a user makes changes in offline mode. In this strategy, each transaction is executed optimistically without locking the data. When the app goes back online, the system checks if the data has been modified by other users. If not, the changes are applied; otherwise, appropriate conflict resolution is performed. This approach provides a balance between performance and consistency in scenarios with intermittent connectivity.
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