---
title: "Discussion on \"How Database Reads Work: Pages, Buffer Pools, and Disk\" | Hashnode"
description: "Discussion on \"How Database Reads Work: Pages, Buffer Pools, and Disk\". Understand the mechanics of database reads. Learn why SQL queries hit the buffer pool in RAM first, and why databases load 8KB pages instead of single rows."
url: "https://hashnode.com/posts/how-database-reads-work/6a2c3a6c4291bf0df184cf2b"
---

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# [How Database Reads Work: Pages, Buffer Pools, and Disk](https://doogal.dev/how-database-reads-work?utm_source=hashnode&utm_medium=feed)

Understand the mechanics of database reads. Learn why SQL queries hit the buffer pool in RAM first, and why databases load 8KB pages instead of single rows.

Jun 12 · 5 min read · doogal.dev  
Updated Jul 19  
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-   [#database](https://hashnode.com/tag/database)
-   [#softwareengineering](https://hashnode.com/tag/softwareengineering)
-   [#backend](https://hashnode.com/tag/backend)
-   [#sql](https://hashnode.com/tag/sql)

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