WatermelonDB
WatermelonDB is a reactive database framework built specifically for React and React Native applications requiring extremely fast performance with very large datasets and offline-first architecture.
Installing WatermelonDB
Defining a Schema
Defining a Model
Writing Data
Why WatermelonDB is Fast
WatermelonDB is designed to be lazy, loading data only when actually needed, and uses native SQLite under the hood while providing a reactive, observable-based API layer for React components.
Built-in Sync Framework
WatermelonDB includes a built-in synchronization protocol designed specifically for building offline-first applications that sync seamlessly with a remote backend once connectivity is restored.
When to Choose WatermelonDB
WatermelonDB is particularly well suited for applications with tens of thousands of records, such as large note-taking apps, CRMs, or offline-first productivity tools requiring instant startup performance.
Conclusion
WatermelonDB offers exceptional performance and a robust offline-first sync framework, making it a strong choice for React Native applications dealing with very large, complex local datasets.

