Hint 1 — locked

Hint 2 — locked

Hint 3 — locked

Problem

Build a food delivery platform. Customers browse menus, place orders, and track delivery in real-time. Restaurants receive and confirm orders. Drivers accept delivery requests, pick up food, and update their location every few seconds. All parties see real-time status updates.

Functional Requirements

• Browse restaurant menus and place orders
• Assign orders to nearby available drivers
• Real-time driver location tracking (GPS update every 3–5 s)
• Push order status updates to customers (order confirmed → picked up → delivered)
• Handle restaurant capacity and estimated preparation times

Non-Functional

• 5M concurrent orders at peak (dinner rush)
• Location update latency < 3 s end-to-end
• 99.9% order placement availability
• Driver matching < 10 s from order confirmation

Prerequisites