Design Hotel Booking System | Agoda | Airbnb | MakeMyTrip

Functional Requirement

User

• Search a hotel
• Get hotel details
• Fetch room details
• Create a booking order
• Make a Payment
• Fetch bookings

Admin

• CRUD on Hotel
• CRUD on Room
• Get booking details

Non Functional Requirement

• Low latency (moderate)
• Highly available (Search, Listing)
• Highly consistent (Booking, Inventory)
• Highly concurrent (No Duplicate booking)

Resource Estimation

• As per google booking.com has nearly
• 4 million Properties 30 Million Rooms
• 500 million monthly active users

API

• Hotel API
• Room API
• Booking API
• Search API

HLD

DB Choice