System Design Solutions
Explore real-world system design problems and their solutions. Each design includes architecture diagrams, scalability considerations, and trade-off analysis.
Chat System
Build a real-time messaging platform with scalability and reliability
WebSocketsMessage QueuesScalability
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Create a high-performance feed system for millions of users
CachingRanking AlgorithmsScalability
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Build a real-time comments system for live events
WebSocketsReal-time UpdatesScaling
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Design a cloud storage platform with file synchronization
File StorageSync AlgorithmsConflict Resolution
Upgrade to UnlockGame Leaderboard
Build a real-time leaderboard system for gaming platforms
RankingReal-time UpdatesCaching
Upgrade to UnlockFood Delivery
Design a complete food delivery platform like DoorDash
GeolocationReal-time TrackingPayment Systems
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Build a secure payment processing system
SecurityTransactionsCompliance
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Design a ticket booking system with millions of concurrent users
ConcurrencyInventory ManagementScalability
Upgrade to UnlockWeb Crawler
Design a distributed web crawler for search indexing
Distributed SystemsCrawling StrategyData Processing
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Start with fundamental concepts in the System Design Basics course, then explore these solutions to see how those concepts are applied in real-world systems.
Go to System Design Basics