This article explores the implementation of an offline-first architecture in React Native using WatermelonDB for local storage and Supabase as the backend. It details the process of syncing local SQLite data with remote PostgreSQL storage using a 'last-write-wins' strategy and triggers, balancing improved UX with the trade-off of increased schema management complexity.
Key points
Offline-first architectures significantly improve user experience by providing near-instant interactions via local storage.
WatermelonDB provides a reactive, SQLite-based layer for React Native, suitable for sync-heavy applications.
Synchronizing local state with remote databases requires managing schema parity between the local client and the backend.
A 'last-write-wins' strategy simplifies conflict resolution but may lead to data loss in multi-device update scenarios.
The complexity of managing dual-schema environments is a significant trade-off compared to direct remote data access.
