Step 1 of 13 · Intro

Design a food delivery app

Browse, order, track, all at dinner-time peak.

How it works

• ›Browse: search and read restaurant menus.
• ›Order: record the order and notify the restaurant.

What you'll build

1. The API and the data model for restaurants, orders and deliveries
2. A system that answers 600 requests a second
3. Cached menus within a budget
4. A queue and workers that take orders through the dinner rush
5. A CDN for a nationwide promotion and a limiter against scrapers
6. A design that survives a cold cache, a lost worker and a lost primary