Overview
Offline-First design treats the network as an enhancement rather than a requirement. It ensures that the application remains usable in low-connectivity or offline scenarios by relying on local storage and cached assets.
Key Components
- Service Workers: For caching the App Shell and assets.
- Client-Side Storage: Using IndexedDB or PouchDB to store application data locally.
- Synchronization: Using APIs like Background Sync to upload local changes when the connection is restored.
Philosophy
Instead of showing an 'Offline' error, an offline-first app allows the user to continue interacting with existing data and queues new actions for later.