🎯 System Design Interview Prep
The best websites, platforms, and communities to prepare for System Design interviews — question banks, hands-on labs, study guides, and mock interviews.
System Design Questions – GreatFrontEnd
Real system design interview questions from FAANG — URL shortener, WhatsApp, Instagram, YouTube, and more with structured solutions.
System Design Q&A – InterviewBit
Common system design questions with detailed architectural approaches — database choices, API design, scaling strategies.
System Design Primer – GitHub
260k ⭐ — the most comprehensive system design study guide. Covers every core concept with diagrams and real-world examples.
ByteByteGo System Design 101
Visual system design explanations with diagrams. Complex concepts explained in easy-to-understand visuals — great for interview prep.
Designing Data-Intensive Applications
The bible of distributed systems. Senior engineers are expected to have read this — databases, replication, consistency, and CAP theorem.
Grokking the System Design Interview
The most recommended paid course for system design interviews. Step-by-step walkthroughs of 20+ real interview problems.