IndexedDB and cloud sync engine to keep logs consistent across devices.

Backend & Sync Service

Define sync schema

Design the data schema for synchronizing feeding logs across devices, ensuring consistency and forward compatibility.

Store feeding logs locally in IndexedDB so the app can work offline and sync changes later.

Handle conflicts when multiple devices edit the same feed entry, resolving with the most accurate data.

Use service workers to cache app assets and recent feeding logs for reliable offline-first use.

Build a migration manager to handle schema updates without losing existing feeding log data.

Allow creation of local backup snapshots of feeding logs for recovery if sync fails.

Prototype direct peer-to-peer syncing of feeding logs for households without cloud connectivity.

Encrypt all feeding logs before syncing or storing them to protect sensitive baby health data.

Ensure the app is fully usable offline, syncing data only when connectivity is available.

Write unit tests for SyncService to verify feeding logs sync correctly in different scenarios.

Run large-scale tests to confirm IndexedDB and sync logic handle 10,000 feeding log entries efficiently.

Improve performance of fetching, sorting, and filtering large feeding log datasets.

Create a visible log of sync attempts and results so parents know when feeding data is up to date.

Define clear error messages and fallback options for sync and storage failures.

Enable multiple parent devices to log feeds for the same baby without overwriting each other’s data.

Automatically prune old log metadata to keep the database lightweight while retaining essential records.

Retry failed sync operations automatically to avoid losing feeding log updates.

Test migration paths to ensure IndexedDB upgrades keep feeding logs safe and intact.

Integrate telemetry to track sync success, errors, and user activity for future optimization.

Prepare integration for syncing feeding logs with cloud services as a fallback option.

Ensure reminder and notification preferences are synced between iPhone, Watch, and other devices.