Master WebSockets in this crash course, moving from core theory to building a high-frequency "Broadcast Engine." Learn how to ingest data from admin sources or APIs to deliver live match scores, commentary, and ball-by-ball updates to 100,000+ simultaneous users with sub-second latency. This project covers everything from the initial handshake to deployment, demonstrating how to architect a system that broadcasts real-time data to millions of clients without crashing the server.

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Timestamps: 
00:00:00 — Introduction
— Course
00:04:59 — The Real Time Shift
00:08:31 — Architecture
00:14:29 — Websocket in Action
00:19:58 — Websocket in Action (Demo)
00:50:06 — Socket Patterns
00:57:12 — Beyond The Socket
01:03:07 — Course Outro
— Build
01:07:13 — Project Demo
01:10:08 — Hostinger
01:13:12 — Project Setup
01:21:33 — Database Schema
01:39:04 — Matches Rest API
02:04:38 — WebSocket Server
02:25:33 — Security with Arcjet
02:46:42 — Commentary Rest API
02:57:29 — Broadcast Commentary 
03:20:41 — Site 24x7 APM
03:25:01 — Deployment, Seeding & Insights

JavaScript Mastery

WebSockets Crash Course: Build a Real-Time Sports Engine (10ms Updates)

<a href="https://app.daily.dev/javascriptmastery" data-mention-id="Ryxm6aexEyQkag8twBnuv" data-mention-username="javascriptmastery" translate="no">@javascriptmastery</a> Really good explain everything in details thank you share this video.

Thanks for sharing! Very clear explanations.

ws is outdated, move to WebTransport on HTTP3