NestJS WebSocket Integration Deep Knowledge : Use with technology: for comprehensive documentation. Gateway Setup Module Registration Authentication Guard Room Management Exception Handling Scaling with Redis Adapter Event Listeners Injecting Gateway into Services Anti-Patterns | Anti-Pattern | Why Bad | Correct Approach | |--------------|---------|------------------| | Not using namespaces | All events mixed together | Use namespaces for separation | | Missing auth on connect | Unauthorized access | Implement WsAuthGuard | | No room cleanup | Memory leaks | Handle disconnect events | | Sync…