Most engineers don't fail system design interviews because they lack content — they fail because they read topics in the wrong order. Sharding before access patterns, consensus papers before requirements, tools before trade-offs. This roadmap fixes that with a dependency-first learning path organized into three tracks based on your timeline.

TLDR: This roadmap organizes 52 system design posts into three learning paths: a 2-week interview sprint, a 4-week backend depth plan, and full mastery — covering foundations, APIs, data, async/microservices, and 19 HLD worked examples.