System Design Arcade

System Design Arcade turns system design interview prep into interactive arcade-style games. No more passive reading or hour-long videos — learn by doing. TWO TRACKS: CONCEPT ARCADE (10 games) Master one building block at a time: • Caching — Redis, CDN, eviction policies • Databases — SQL vs NoSQL, indexing, ACID • Load Balancing — algorithms, health checks, scaling • Sharding — partitioning strategies, consistent hashing • CAP Theorem — consistency vs availability tradeoffs • Networking — DNS, TCP/UDP, HTTP, WebSockets • API Design — REST, GraphQL, rate limiting, versioning • Async Processing — message queues, pub/sub, event-driven • Replication — leader-follower, quorum, conflict resolution • Estimation — back-of-envelope calculations, capacity planning PROBLEM ARCADE (14 games) Design real systems end-to-end: • URL Shortener, Rate Limiter, Chat System, News Feed • Instagram, YouTube, Uber, Dropbox, Twitter • Typeahead, Yelp, Ticketmaster, Web Crawler, Google Docs WHAT MAKES IT DIFFERENT: • 24 games, 120 levels, 480+ interactive challenges • 6 challenge types: multiple choice, ordering, fill-in-the-blank, API builder, architecture builder, and more • Each game has 5 levels from fundamentals to scale • Instant feedback with detailed explanations • Track your progress with scores and streaks • No subscriptions, no ads Built for software engineers preparing for system design interviews, or anyone who wants to understand how large-scale systems work.