Real-world systems Pick a system

Learn system design with real-world things

Pick an app you use every day.
Scroll and Explore

Start with a delivery app See all systems
1

Follow Nami

She guides you through one everyday thing, with a few words and an animation per step.

2

Watch it grow

Each idea breaks at a bigger size, and you see the fix.

3

Test yourself

A short quiz with hints and a notes page, built on real AWS services.

Pick a system

Live

Ecommerce: a 10-minute delivery

From the home screen to the doorbell. Search, cart, payment, the warehouse, the rider, and everything between.

  • 11 steps
  • 3 sizes
  • Quiz
Open the story
milk
Live ยท New

Search: what happens when you type

Nami, a cloud architect, builds the AWS setup behind a search bar: VPC, load balancer, search index, live stock, cache. It ends in a diagram you can open in draw.io.

  • 15 steps
  • Full VPC diagram
  • Trace a search
Open the story
Coming soon

More lessons

New stories are being written, one at a time.