Chapter 12

Real-Time Communication

WebSockets, long polling, and server-sent events — how to push updates to clients instead of waiting for them to ask.

What You'll Learn in This Chapter:

✦WebSockets protocol
✦Server-Sent Events (SSE)
✦HTTP Long Polling
✦Connection state management

Premium

Unlock Chapter 12: Real-Time Communication

You are viewing the free chapter preview. Subscribe to unlock the complete System Design interactive visualizer, step-by-step walkthroughs, and audio narration.

Every problem simulation, step-by-step
Full LLD pattern walkthroughs + code editors
HLD deep dives & real system design breakdowns

$19one-time · lifetime

Founding price for early users — locked in for life.