Requirements

Functional Requirements:

• Allow reservation of a parking spot.
• Process payment for the reservation.
• Enable parking of a car in the reserved spot.
• Support early departure before reservation time expires.
• Gate check-in/out.
• Handle no show.

Non-Functional Requirements:

List the key non-functional requirements (eg low latency, scalability, reliability, etc.)...

API Design

POST parking/checkin

GET parking/availableSlots

POST parking/checkout

GET parking/payment

Detailed Component Design

SQL DB - Lock for update to be used

Tables involved are

Vehicle

Slots

Bills