Problem Statement

Design a deeply-nested threaded comment system with real-time voting and multiple sort algorithms.

tree structurevotingcachingrankingpagination

Estimated: 45 min

RedditHacker NewsStack Overflow

This is a Pro feature

Upgrade to access all 98 problems and unlimited AI reviews.

Tap components above to start building

Add at least 2 components, then connect them

Design Assistant

Sees your canvas

AI Design Assistant

Ask about your architecture, request suggestions, or explore trade-offs. I can see your current canvas.

Reddit Comment Systemmedium

00:00