Real-Time Systems•10 min read

WebSockets vs. WebRTC: Choosing the Right Real-Time Infrastructure for Your Platform

Peer-to-Peer Data Channels, STUN/TURN Signaling & Scalable Redis Pub/Sub Backends

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1. Network Topologies: Centralized Sockets vs. Peer-to-Peer Meshes

WebSockets route all messages through a centralized server over TCP, making them ideal for chat feeds, stock tickers, and collaborative document editing. WebRTC establishes direct peer-to-peer UDP channels, delivering sub-100ms latency necessary for live audio/video and gaming.

2. STUN and TURN Server Infrastructure

WebRTC requires signaling to traverse corporate firewalls and NATs. We configure scalable Coturn STUN/TURN servers on cloud hardware with automated certificate rotation.

3. Scaling Real-Time Messaging with Redis Pub/Sub

For WebSocket servers across distributed containers, use Redis Pub/Sub or Kafka as the message bus to broadcast events seamlessly across multiple Node.js or Django worker nodes.

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