ee4b7305a2
This PR adds all the guides from [Visual Guides](https://bytebytego.com/guides/) section on bytebytego to the repository with proper links. - [x] Markdown files for guides and categories are placed inside `data/guides` and `data/categories` - [x] Guide links in readme are auto-generated using `scripts/readme.ts`. Everytime you run the script `npm run update-readme`, it reads the categories and guides from the above mentioned folders, generate production links for guides and categories and populate the table of content in the readme. This ensures that any future guides and categories will automatically get added to the readme. - [x] Sorting inside the readme matches the actual category and guides sorting on production
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title, description, image, createdAt, draft, categories, tags
| title | description | image | createdAt | draft | categories | tags | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Payment System | Explore the architecture and flow of a typical payment system. | https://assets.bytebytego.com/diagrams/0299-payment-system.jpeg | 2024-03-07 | false |
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Here is how money moves when you click the Buy button on Amazon or any of your favorite shopping websites.
Payment Flow
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When a user clicks the “Buy” button, a payment event is generated and sent to the payment service.
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The payment service stores the payment event in the database.
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Sometimes a single payment event may contain several payment orders. For example, you may select products from multiple sellers in a single checkout process. The payment service will call the payment executor for each payment order.
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The payment executor stores the payment order in the database.
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The payment executor calls an external PSP to finish the credit card payment.
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After the payment executor has successfully executed the payment, the payment service will update the wallet to record how much money a given seller has.
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The wallet server stores the updated balance information in the database.
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After the wallet service has successfully updated the seller’s balance information, the payment service will call the ledger to update it.
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The ledger service appends the new ledger information to the database.
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Every night the PSP or banks send settlement files to their clients. The settlement file contains the balance of the bank account, together with all the transactions that took place on this bank account during the day.