Frontend System Design

Published chapters

1. 1 Networking Understand how bytes travel from a server to a pixel, and pick the right API style. 8 lessons · Part I — The Pipes
2. 2 Communication Choose the right real-time transport for a given update frequency and direction. 7 lessons · Part I — The Pipes
3. 3 Security Know the top frontend attack surfaces and the header, config, or code change that closes each one. 15 lessons · Part II — The Shield
4. 4 Testing Build a test suite that catches regressions without slowing the team down. 8 lessons · Part II — The Shield
5. 5 Performance Measure what users feel, then fix it in the order that actually moves the number. 7 lessons · Part III — The Speed
6. 6 Database & Caching Decide what to store, where to store it, and how long it stays valid. 10 lessons · Part III — The Speed
7. 7 Logging & Monitoring Know something broke, and why, before the user tells you. 4 lessons · Part III — The Speed
8. 8 Accessibility Ship interfaces that work with a keyboard, a screen reader, and low vision — by default, not as a retrofit. 7 lessons · Part IV — The Reach
9. 9 Offline Support Make the app usable when the network isn't, and sync cleanly when it returns. 2 lessons · Part IV — The Reach
10. 10 Low Level Design Design and build reusable components under interview time pressure, narrating trade-offs as you go. 15 lessons · Part V — The Craft
11. 11 High Level Design Run a 45-minute frontend system design interview end to end, using one repeatable frame. 14 lessons · Part VI — The Blueprint