“Architecture of an Offline-First WatermelonDB System In field apps like Agrazia Mushroom Distribution, drivers and warehouse managers work in basements and rural centers without Wi-Fi. 3-Tier Synchronization Flow: 1. Local-First SQLite Engine: All queries execute in under 16ms against local phone storage. 2. Delta Sync Protocol: The app...”
Comprehensive Solution & Technical Breakdown
### Architecture of an Offline-First WatermelonDB System
In field apps like **Agrazia Mushroom Distribution**, drivers and warehouse managers work in basements and rural centers without Wi-Fi.
#### 3-Tier Synchronization Flow: 1. **Local-First SQLite Engine:** All queries execute in under 16ms against local phone storage. 2. **Delta Sync Protocol:** The app sends its `last_pulled_at` timestamp. The backend returns only records created, updated, or deleted since that time. 3. **Conflict Resolution:** If Server and Client edit the same record concurrently, server timestamp takes precedence or domain-specific merge logic executes.
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