---
title: "Discussion on \"Under the Hood of a High-Concurrency Checkout Engine: Why I Ditched Simple CRUD for Atomic State.\" | Hashnode"
description: "Discussion on \"Under the Hood of a High-Concurrency Checkout Engine: Why I Ditched Simple CRUD for Atomic State.\". E-commerce projects are everywhere on résumés—but most of them stop at basic CRUD. I didn’t want to build just another app that could list products and create orders. I wanted to build a system that wouldn’t fall apart when 10,000 users hit “Checkout..."
url: "https://hashnode.com/posts/under-the-hood-of-a-high-concurrency-checkout-engine-why-i-ditched-simple-crud-for-atomic-state/6963c329e5a8e2e4925c6ec0"
---

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Discussion

# [Under the Hood of a High-Concurrency Checkout Engine: Why I Ditched Simple CRUD for Atomic State.](https://vanshkansal.hashnode.dev/under-the-hood-of-a-high-concurrency-checkout-engine-why-i-ditched-simple-crud-for-atomic-state?utm_source=hashnode&utm_medium=feed)

E-commerce projects are everywhere on résumés—but most of them stop at basic CRUD. I didn’t want to build just another app that could list products and create orders. I wanted to build a system that wouldn’t fall apart when 10,000 users hit “Checkout...

Jan 11 · 6 min read · vanshkansal.hashnode.dev  
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-   [#redis](https://hashnode.com/tag/redis)
-   [#system-design](https://hashnode.com/tag/system-design)
-   [#concurrency](https://hashnode.com/tag/concurrency)
-   [#production-ready](https://hashnode.com/tag/production-ready)

## Written by

[VANSH KANSAL](https://hashnode.com/@vanshkansal)

@vanshkansal

  
[View profile](https://hashnode.com/@vanshkansal)

Dev Logs of a Relentless Learner.

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