Real FAANG Mobile System Design Questions

Master Mobile System Design

Practice with real-world mobile system design challenges used at top tech companies. Each question comes with AI-powered feedback and detailed solutions.

hard

Design a Video Upload and Playback Flow

Let's design a TikTok-style video feature for our app. Users should be able to record short clips and share them with others. What would be your approach to building this?

MobileVideoNetworkingClient Architecture30 min

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medium

Design a Chat Application

Design a real-time chat application that supports both 1-on-1 and group messaging. Focus on real-time delivery, offline support, and state management across multiple chat threads.

State ManagementOffline FirstNetwork OptimizationBackground SyncPush Notifications30 min

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