System Design Roadmap
Free system design course with HLD and LLD tutorials. Learn how Netflix, Uber, and WhatsApp are designed. Perfect for system design interviews.
Master the art of designing scalable distributed systems with our comprehensive documentation. Whether you are preparing for technical interviews at top tech companies or building production-grade applications, our guides cover everything from fundamental concepts like CAP theorem and database sharding to real-world architecture patterns used by industry leaders.
Explore Learning Paths
Our structured curriculum takes you from basic concepts to advanced system architecture. Each section builds upon the previous, ensuring a solid foundation for designing complex systems.
Start with Fundamentals
Learn CAP theorem, consistency models, scalability patterns, and essential distributed systems concepts that form the foundation of system design.
System Components
Deep dive into databases, caching strategies, load balancers, message queues, and other building blocks used in modern architectures.
Case Studies
Explore real-world system designs of Netflix, Uber, WhatsApp, Instagram, and 15+ other popular applications used by millions.
Company System Design Case Studies
Learn high-level design (HLD) of real-world systems used by top tech companies
System Design Topics
Why Learn System Design?
System design is a critical skill for software engineers at all levels. Understanding how to architect scalable, reliable, and maintainable systems is essential for building successful applications that can handle millions of users.
Whether you are interviewing at companies like Google, Amazon, Meta, or Microsoft, or leading architecture decisions at your current company, system design knowledge helps you make better technical decisions and communicate effectively with stakeholders.
Our documentation covers both High-Level Design (HLD) for understanding overall system architecture and Low-Level Design (LLD) for implementing specific components with clean, maintainable code.
Click sections to expand/collapse. Click colored topic cards to navigate.