Problems

Design Url Shortener

Easy

Design Rate Limiter

Easy

Design LeetCode

Medium

Design Yelp

Easy

Design Pastebin

Easy

Design E-commerce Store

Medium

Design Realtime Monitoring System

Easy

Design Typeahead System

Easy

Design a Comment System

Medium

Design Twitter

Medium

Design a Realtime Chat App like WhatsApp

Hard

Design Dropbox

Hard

Design YouTube

Hard

Design a Ride-Hailing Service Like Uber

Hard

Design Google Maps

Hard

Design TicketMaster

Hard

Design Netflix

Medium

Design Top K Heavy Hitter

Medium
More problems coming soon ...