System Design

React Native powers both iOS and Android apps with a shared codebase, allowing staff to work offline and sync when connectivity is available.

Node.js REST API handles authentication, data validation, and business logic while exposing WebSocket endpoints for real-time updates.

Couchbase NoSQL was chosen for its mobile-first sync capabilities, enabling seamless data replication between the mobile clients and central database.

WebSocket connections push instant updates to dashboards and notify staff when new incidents are logged or require attention.