Developer Builds Real-Time WebSocket and Cloud Storage Layer for QuickChat App

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A developer reached Day 168 of their MERN stack learning journey, marking continued progress on a full-stack chat application called QuickChat. The session focused on setting up a Socket.io server with CORS configuration to enable real-time communication. An in-memory mapping object was implemented to link authenticated user IDs to their active socket session identifiers. The developer also added logic to broadcast live online user lists to all connected clients, updating in real time as users connect or disconnect. Cloudinary integration was introduced alongside these changes to handle cloud-based media storage for the application.

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