🏗 Free course

Scale & System Design

Answer 'what happens at 100x?' without flinching.

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What you will learn

1. The system design interview: six steps, in order
   Nobody fails a system design interview for choosing Kafka over Kinesis. They fail for naming components before computing a single number.
2. Idempotency — surviving the same event twice
   Distributed systems retry. Retrying is not the bug — charging twice is.
3. Event Time vs Processing Time
   A driver in a tunnel sends her 8:59 PM ping at 9:04. Which hour does it belong to?
4. Sharding and replication (coming soon)
5. CAP, consistency models, and what 'eventually' costs (coming soon)
6. Back-pressure, buffering, dead letter queues (coming soon)
7. Designing for 100x — the capacity conversation (coming soon)
8. Cost engineering: the levers that move the bill (coming soon)
9. Design: a ride-hailing data platform (RideFlow capstone) (coming soon)
10. Design: a payments event pipeline (coming soon)
11. Design: real-time analytics for a consumer app (coming soon)

How the course works

• Each chapter is a short book: the basics, the explanation in several ways, the words to know, and a two-minute summary.
• Then you test yourself — quiz, puzzles — and recall it on two different days, so it stays.
• Blinks (one idea per screen), games and a daily plan keep you coming back. It is free.