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Weekly system design topics you can read in 10 mins.
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Sep 28, 2022 β€’ 9 tweets β€’ 2 min read
What happens behind the scenes when we 𝐬𝐑𝐨𝐩 𝐨𝐧π₯𝐒𝐧𝐞?
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Disclaimer: I have limited knowledge of the eCommerce system. The diagram below is based on my research. Please suggest better names for the components or let me know if you spot an error. The diagram shows the 4 key business areas in a typical e-commerce company: procurement, inventory, eComm platform, and transportation.
Sep 7, 2022 β€’ 8 tweets β€’ 2 min read
How do you pay from your digital wallets, such as Paytm, Paypal, and Venmo, by scanning the QR code?

To understand the process involved, we need to divide the β€œscan to pay” process into two sub-processes: Image 1. Merchant generates a QR code and displays it on the screen.

2. Consumer scans the QR code and pays.