Real-time dashboards display live data updates without page refresh. React state management with useState and useReducer handles real-time data. WebSocket connection established in useEffect on component mount. Socket.IO client provides event-based communication. Chart libraries like Recharts and Chart.js visualize time-series data. Data grid libraries like AG Grid display tabular data with updates. Connection status indicator shows WebSocket health. Reconnection logic handles temporary disconnections gracefully. Data batching combines multiple updates into single render. Virtual scrolling optimizes rendering of large datasets. Subscriptions manage which data streams the client receives. Filter controls allow users to customize dashboard view. Time range selectors control display window. Refresh intervals balance real-time needs with server load. Performance optimization uses React.memo and useMemo. process data without blocking UI. Dashboard layouts with CSS Grid or React-Grid-Layout. Responsive design ensures mobile compatibility. Testing with mocked WebSocket connections. Real-time dashboards provide immediate insight into business operations. Good UX shows loading states and empty states clearly.