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System Design Learning Center

Master the key concepts and strategies to ace your system design interview

Common System Design Questions

Design Gmail

Hard60 min
EMLX Files
Protobuf
Inverted Index
SQLite
Queues
iOS
Swift

Design a Mobile Photo Sharing App

Premium
Easy45 min
Image processing
Feed algorithms
iOS
Swift

Design a File Upload Library

Premium
Easy45 min
Chunking
Multipart Upload
iOS
Swift