FlutterState ManagementOffline-first
Building Offline-First Apps with Hive and BLoC
A pattern for caching writes locally and reconciling with the server so the app stays usable with no connection.
By Bimal Khatri·6 min read·Nov 3, 2024·Updated Jun 15, 2026
The problem
Users expect apps to keep working on a train, in a lift, or on flaky rural networks. Offline-first treats the local store as the source of truth and syncs in the background.
The setup
- Hive holds the local cache and a pending-writes queue.
- BLoC emits optimistic UI updates the moment a user acts.
- A sync worker drains the queue when connectivity returns.
Reconciliation
Stamp each record with an updated-at timestamp and let the most recent write win. It is simple, predictable, and good enough for the vast majority of mobile use-cases.
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