⚠️ Disclaimer
I do not take any credit for the content here, I forked it to make sure I have a personal copy for reference.

These two repositories are outstanding, extremely well-organised, and among the best resources available for system design interview preparation and scalable system architecture learning.

They cover both foundational concepts and real-world design problems, with clear explanations, diagrams, and practical trade-offs that reflect how systems are built in production.

Why these repositories are valuable

• Clear breakdown of core system design concepts (scalability, reliability, availability, consistency)
• Step-by-step walkthroughs of real interview-style design problems
• Well-structured sections with diagrams and examples
• Focus on trade-offs rather than “one correct answer”
• Useful both for interview preparation and day-to-day architectural thinking

Repositories

• 🔗 https://github.com/emanonk/best-system-design-resources
  A curated collection of high-quality system design materials, articles, and references—ideal for building strong fundamentals.

• 🔗 https://github.com/emanonk/system-design-primer
  A comprehensive guide that walks through system design topics and classic interview questions with practical, production-oriented explanations.

If you’re preparing for system design interviews—or simply want to become a better backend or platform engineer—these repositories are absolute must-reads.