: Building a news feed, notification system, and chat service. Large-Scale Storage : Designing YouTube and Google Drive.
| Option | What you get | Cost | |--------|--------------|------| | (Amazon Kindle, Google Play) | Full text, original diagrams, updates | ~$30–40 per volume | | Buy print (Amazon, No Starch Press) | High-quality paper, large diagrams | ~$35–50 per volume | | ByteByteGo (author’s website) | Video lessons + interactive quizzes + system design templates | $199/year (often discounted) | | O’Reilly subscription (includes Alex Xu’s books) | Access to both volumes + 1000s of other tech books | ~$49/month or $499/year | | Library access (Safari/O’Reilly via public library) | Free if your library provides e-access | $0 | system design interview alex wu pdf