System Design Interview Crash Course
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Design Amazon Shopping Cart

Here is the step-by-step system design for the Amazon Shopping Cart.

1. Problem Definition and Scope

We are designing the backend for the Amazon Shopping Cart. This is a temporary storage area where users hold items they intend to purchase. It acts as the bridge between browsing products and the final checkout.

  • User Groups:
    • Shoppers: Add items, update quantities, and view the cart.

    • The System: Merges anonymous guest carts into user accounts when they log in.

  • Scope:

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