E-commerce Platform - Amazon, Flipkart

Design an e-commerce platform like Amazon that allows users to buy and sell products online. The system should be able to handle a large number of users and products and should provide a seamless shopping experience.

Example:

Suppose we need to build an e-commerce platform like Amazon for a global audience with millions of products and users. Users should be able to browse products, add items to their cart, make payments, and receive products through delivery. The system should also provide features like reviews, ratings, and recommendations to help users make informed purchasing decisions.

Functional Requirements:

• Users should be able to browse products by category, price, and other attributes.
• Users should be able to search for products using keywords and other search criteria.
• Users should be able to view product details, images, and reviews.
• Users should be able to add products to their cart, remove products, and change quantities.
• Users should be able to make payments using various payment methods and receive order confirmation.
• Sellers should be able to create and manage their product listings and receive notifications for sales.
• The system should provide features like reviews, ratings, and recommendations to help users make informed purchasing decisions.
• Users should be able to track their orders and receive delivery updates.
• The system should handle returns and refunds for products.

Non-functional Requirements:

• The system should be able to handle a large number of concurrent users and products.
• The system should be able to scale horizontally to handle larger volumes of users and products.
• The system should be fault-tolerant and able to recover from errors.
• The system should be able to run continuously with minimum downtime.
• The system should be able to handle a high volume of transactions without impacting performance.
• The system should provide strong security measures to protect user data and prevent unauthorized access.

Assumptions:

• The system assumes that users are authenticated and authorized to use the service.
• The system assumes that sellers are verified and authorized to sell products on the platform.
• The system assumes that products comply with local laws and regulations.
• The system assumes that payment methods are secure and reliable.

Estimated Usage:

• The system should be able to handle at least 100 million users.
• The system should be able to handle at least 1 million concurrent users.
• The system should be able to handle at least 10 million products.