System design with payments. Possible issues and follow-up questions
But in this article, we will focus on the high-level design to discuss probable issues with it and follow-up questions we might face during the interview.provide idempotent API with two-step processing.
Let’s go ahead with the second approach. First, we provide a page with a dropdown of 10 charities, the amount user wants to donate, and the button “next”:After that, we will generate UUID from PSP and store it in our DB, after data was saved we redirect the user to the payment page:
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