Goals
- Seamless multi-device sync with predictable state
- Fast, accessible UI for quick task interaction
- Resilient offline behavior and conflict handling
Architecture
We implemented a modular state model with React hooks, optimizing render frequency via memoization and key list reconciliation. Firebase enabled real-time updates with security rules tailored to user scopes and data integrity.
- Optimistic UI updates with server reconciliation
- Stable list virtualization for large datasets
- Background sync and retry mechanisms
Performance & UX
Focused on reducing input latency and maintaining smooth transitions. Preloaded critical UI states and applied lazy loading for non-critical content.
- Responsive interactions under concurrent updates
- Accessible forms and keyboard navigation
- Consistent Core Web Vitals in production
Outcomes
The app delivers a delightful experience with reliable syncing and clear information architecture, improving daily workflows for users.