Frontend System Design
/Expert
Design Twitter/X Feed
Definition
Designing a social feed requires list virtualization (for scrolling thousands of tweets without lag), optimistic UI updates (for liking/retweeting instantly), and Server-Sent Events (SSE) or polling to alert users of 'New Tweets'.
Explain Like I'm New
A constantly updating list of text and images that never slows down the browser, even if you scroll down for 3 hours straight.
Architecture & Flow
Interview Questions
basic
- What are the core requirements for Twitter Feed?
intermediate
- How do you handle edge cases and accessibility in Twitter Feed?
advanced
- How do you scale and optimize Twitter Feed for millions of concurrent users?
trick
- What happens to Twitter Feed if JavaScript is disabled?