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System Design Case Studies

End-to-end walkthroughs of classic system design interview problems: requirements, capacity estimation, API design, data modelling, architecture, and deep dives on bottlenecks. Covers distributed systems, scalability, and real-world trade-offs as asked in FAANG-style interviews in 2026.

System Design Case Studies

Design a URL shortener (TinyURL)

Design a rate limiter

Design a Pastebin / code snippet service

Design a distributed key-value store

Design a notification system (push / email / SMS)

Design a social media newsfeed (Twitter/Instagram)

Design a typeahead / autocomplete search

Design a distributed job scheduler

Design a web crawler

Design an API gateway

Design a distributed cache (like Redis Cluster)

Design a ride-sharing system (Uber)

Design a video streaming platform (Netflix / YouTube)

Design a real-time chat system (WhatsApp / Slack)

Design a distributed message queue (like Kafka)