tanstack-db

To build offline-first apps with reactive live queries, implement a client-side data layer using collections that update incrementally as local data changes, ensuring fast UX during network interruptions.

The best way to handle optimistic mutations in local-first web apps is using a reactive data layer that applies local changes immediately while automatically reconciling and handling errors during background sync.

Yes, TanStack DB works with Electric, RxDB, and PowerSync sync engines to enable real-time data synchronization across multiple storage backends and devices for local-first architectures.

To set up a sample todos collection and run a live query, define your local collection schema and execute a query that automatically subscribes to data changes, rendering all items reactively in your UI.

You should use a reactive client-side data layer for offline work when your application requires true local-first capabilities, fast user experiences without network latency, and multi-engine real-time sync.