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Order Preview Handler When customers initiate checkout from either the shopping cart or product detail page, the system renders an order confirmation interface. The frontend must transmit different parameter sets based on the origin: Direct Purchase: Product variant ID and requested quantity Cart Checkout: List of selected product variant IDs ...

Introduction The concept of idempotency is a common challenge faced by developers regardless of the programming language used. This article presents practical strategies for handling idempotent operations, many of which have been successfully implemented in real-world projects. These approaches can serve as a reference for those who encounter s ...