Hard Design: E-Commerce System (Amazon)

What is the purpose of storing the price in the cart (price snapshot) at add time?

— Tests your understanding of this concept.

Answer Options

A To enable price history tracking

B To show users the price at time of adding, and detect price changes before checkout

C To reduce database queries

D Because prices never change

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This question is from the Design: E-Commerce System (Amazon) topic (System Design Cases).

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