The definitive guide to building reliable, scalable, and maintainable systems. Covers databases, replication, partitioning, and distributed system tradeoffs.

SOLID principles and structural patterns for building systems that are easy to change, test, and understand over time.

Visual system design breakdowns — how real systems like YouTube, Uber, and Twitter are built. Essential for internalizing large-scale architecture patterns.

Open-source GitHub repository covering every core system design concept with diagrams and examples. A go-to reference before designing anything at scale.

Engineering philosophy over syntax — how to think about code quality, maintainability, and your career as a craftsperson.