In the Wild: Figma's Multiplayer Editing
Our Collaborative Editor lesson weighs Operational Transform against CRDTs for…
Tag
#real-time
10 posts
Design Live Comments
“Design live comments” (Facebook Live, YouTube Live, Twitch chat) tests whether…
Design an Online Auction
“Design an online auction” (eBay with live bidding) is a contention problem…
Pattern: Real-time Updates
Many interview questions have a line buried in the requirements like “users…
Design a Chat System (WhatsApp)
“Design WhatsApp” is one of the most popular system design interview questions…
Design a Ride-Sharing App (Uber)
Ride-sharing platforms like Uber and Lyft process millions of rides daily…
WebSockets with Socket.io
HTTP is request-response. The client asks, the server answers. For real-time…
WebSockets with Socket.io in Node.js
WebSocket vs HTTP Traditional HTTP follows a request/response model — the client…
Real-Time Systems — WebSockets, SSE & Polling
Most web applications are request-response: the client asks, the server answers…
System Design Patterns for Real-Time Updates at High Traffic
The previous articles in this series covered scaling reads and scaling writes…