Requirements

Functional Requirements:

• Allow users to browse restaurant menus, add items to cart, customize orders, and place orders. Support group ordering and split payments.
• Provide real-time tracking of order preparation, pickup, and delivery. Display notifications for order status changes. Display live driver location on a map.
• Enable restaurants to register and manage their profiles, menus, pricing, and availability. Allow restaurants to receive and manage orders in real-time. Support menu CRUD operations.
• Support multiple payment options. Ensure secure payment handling. Support refunds and transaction reconciliation.

Non-Functional Requirements:

User scale 100 million to 1billion DAU

QPS: 100thousand to 1 million

Performance

• low latency: loading 500ms
• scalability
• reliability

API Design

core entity

user table

restaurant table

menu table

order table

API

1.create order

POST/posts

{

userid,

} -> 200 ok{ orderid, status}

2.check/view order

Get/order/{userid}/

3.tracking order in real-time

High-Level Design

see design diagram

Detailed Component Design