Unit 02 of 03
Offline and Synchronization
Design that makes local data the source of truth, the change queue and conflict resolution, the platform's background processing limits, user experience on an intermittent network.
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Lessons
- 01 Offline-First Design Offline-first design makes local data the source of truth and uses the network only for refreshing. The lesson builds the same flow with two designs and measures how well each one works when there is no network. 11 min read
- 02 Synchronization Strategies Synchronization strategies queue a change made offline, send it to the server when the network returns, and resolve conflicts. The lesson measures that offline note editing stays deferred and shuts down when storage is full. 13 min read
- 03 Background Processing Limits Background processing limits describe the rules the operating system sets for running work while the app is not visible. The lesson measures that media backup is deferred and live location is disabled when background capability is restricted. 11 min read
- 04 Connectivity State Management Connectivity state management covers monitoring the connection, adapting to a weak connection, retrying, and showing the state to the user. The lesson measures that an image gallery is degraded and messaging stays deferred on a weak connection. 12 min read