---
title: "Discussion on \"Database Transaction Internals: ACID, WAL, MVCC & Locking\" | Hashnode"
description: "Discussion on \"Database Transaction Internals: ACID, WAL, MVCC & Locking\". Building reliable applications requires understanding database transactions. When you transfer money between accounts, update inventory after a purchase, or maintain referential integrity across table"
url: "https://hashnode.com/posts/db-transaction-internals/6a3e5f26d88bf7aa36fdb211"
---

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# [Database Transaction Internals: ACID, WAL, MVCC & Locking](https://pulkitxm.hashnode.dev/db-transaction-internals?utm_source=hashnode&utm_medium=feed)

Building reliable applications requires understanding database transactions. When you transfer money between accounts, update inventory after a purchase, or maintain referential integrity across table

Jan 3 · 19 min read · pulkitxm.hashnode.dev  
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-   [#system-design](https://hashnode.com/tag/system-design)
-   [#database](https://hashnode.com/tag/database)
-   [#transactions](https://hashnode.com/tag/transactions)
-   [#acid](https://hashnode.com/tag/acid)
-   [#wal](https://hashnode.com/tag/wal)

## Written by

[Pulkit](https://hashnode.com/@pulkitxm)

@pulkitxm · New Delhi, India

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

Junior Software Engineer trying tinker around in web

Hi there! 👋 I'm Pulkit, a passionate web and app developer specializing in MERN and React Native technologies. With a keen interest in open-source contributions and competitive programming, I love building innovative solutions and sharing my knowledge with the community. Follow along for insights, tutorials, and updates on my coding journey!

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