Real-Time

GlobalHandler + CallKit + WebRTC: Global Event Bus and Real-Time Call Architecture

A unified global event handling system that implements priority-based message routing via GlobalHandler, integrates WebRTC peer-to-peer calls, native iOS CallKit integration (MethodChannel), and call recovery management.

NestJS WebSocket IM Customer Service System: From Group Chat Crisis to Virtual Agent Multi-Channel Architecture

Customer Service Real-time Chat System — WebSocket Real-time Push + 6 Message Types + Session Management

In-depth analysis of the admin-next new customer service chat system: from WebSocket real-time communication, 30s polling fallback, cursor-based pagination for message history, to 6 types of rich media messages (text/image/audio/video/file/location) rendering, Bot proxy replies, forced recall, and session closure, covering the complete frontend and backend chain.

useChatSocket — Socket.IO Practice for Admin Customer Service Real-Time Communication

useChatSocket is a 250-line custom React Hook that encapsulates the complete lifecycle management of Socket.IO real-time communication, including connection management, room isolation, unified event dispatch, message mapping, and ACK timeout sending patterns.