exists on GitHub due to copyright. The “top” GitHub repos contain notes, summaries, flashcards, and diagrams — not the full PDF. Buying the book is the proper and reliable way to access all content.
GitHub "Awesome Lists" are great for finding curated study guides, but the best way to use Xu's material is to attempt the design yourself first, then compare your "v0" to his "v1." Key Takeaways from the Top Chapters system design interview alex xu volume 2 pdf github top