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Tag: hard
23 items with this tag.
Aug 07, 2026
📝 Practice Questions
easy
general
medium
amazon
meta
google
microsoft
hard
apple
netflix
Aug 07, 2026
Design Ad Click Event Aggregation
hard
google
meta
Aug 07, 2026
Design Google Maps
hard
google
Aug 07, 2026
Design Nearby Friends
hard
general
Aug 07, 2026
Design a Chat Application (WhatsApp-like)
hard
meta
Aug 07, 2026
Design a Digital Wallet
hard
apple
general
Aug 07, 2026
Design a Distributed Cache
hard
general
Aug 07, 2026
Design a Distributed Email Service
hard
microsoft
google
Aug 07, 2026
Design a Distributed Job Scheduler
hard
general
Aug 07, 2026
Design a Distributed Message Queue
hard
general
Aug 07, 2026
Design a File Storage Service (Dropbox / Google Drive)
hard
general
Aug 07, 2026
Design a Hotel Reservation System
hard
general
Aug 07, 2026
Design a Key-Value Store (DynamoDB-like)
hard
amazon
Aug 07, 2026
Design a Metrics Monitoring & Alerting System
hard
general
Aug 07, 2026
Design a News Feed (Facebook/Instagram-like)
hard
meta
Aug 07, 2026
Design a Payments System
hard
general
Aug 07, 2026
Design a Proximity Service
hard
google
Aug 07, 2026
Design a Ride-Sharing Service (Uber-like)
hard
general
Aug 07, 2026
Design a Stock Exchange
hard
general
Aug 07, 2026
Design a Ticket Booking System (Ticketmaster-like)
hard
general
Aug 07, 2026
Design a Video Streaming Service (YouTube/Netflix-like)
hard
netflix
google
Aug 07, 2026
Design a Web Crawler
hard
google
Aug 07, 2026
Design an S3-like Object Storage System
hard
amazon