android-data-layer

An offline-first Android data layer coordinates local Room storage and remote APIs using repository interfaces. It ensures synchronized read and write paths so the app remains functional without a network connection.

The repository pattern coordinates multiple data sources to serve as the single source of truth. It hides internal implementation details like DAOs and API services from the rest of the app.

You synchronize Room storage with a remote API using an outbox-based write path and stale-while-revalidate reads. This guarantees reliable synchronization across local and remote data sources.

Yes, an outbox-based write path guarantees reliable synchronization for offline-first apps. It queues writes locally until network connectivity is restored, preventing data loss.

Data mapping transforms Room entities and API DTOs into domain models within the repository layer. This prevents internal database and network structures from leaking upward into the app.

Yes, the local Room database exports its schema for migrations within the offline-first repository. This supports structured local storage evolution while maintaining synchronized data flows.