Building a real-time application with Relay 17

Relay 17, a GraphQL client for React web apps, introduces new features to enhance real-time application development. Key updates include the alias directive, improved schema compiler validation, and better VS Code integration. The update supports optimistic UI updates and GraphQL subscriptions, allowing for instant UI changes and server-to-client updates via WebSocket. These features enable developers to create more responsive and dynamic web applications that feel like they're updating in real-time, without requiring page refreshes or user interactions.