2025
Streamify — Real-Time Communication Platform
A real-time communication platform supporting video calls, messaging, and presence tracking using WebRTC, Socket.io, and JWT-based authentication.
Technology Stack
Node.jsReactSocket.ioWebRTCJWTTailwind CSS
Overview
Streamify focuses on the backend challenges of real-time communication: signaling, presence tracking, and session management. The system uses WebSockets for low-latency messaging and WebRTC for peer-to-peer video communication.
System Architecture
A hybrid real-time architecture optimized for latency:
- •Signaling: Custom Node.js/Socket.io signaling server negotiates WebRTC connection metadata (SDP, ICE candidates).
- •Media Transport: WebRTC establishes efficient P2P UDP data channels for video and audio streams.
- •State Management: Redis stores ephemeral presence data (online status, active rooms) for blazing-fast access.
- •Security: JWT-based handshake mechanism validates socket connections before upgrading protocols.
Key Challenges
- •Managing real-time presence across multiple sessions.
- •Designing signaling flows for WebRTC.
- •Securing real-time connections with JWT authentication.
- •Ensuring scalability under concurrent usage.
Key Learnings
- •WebSockets outperform polling for real-time UX.
- •Decoupling signaling from media streams simplifies architecture.
- •JWT-based session validation prevents unauthorized socket access.
Impact
- •Enabled smooth real-time communication with low perceived latency.