---
title: "Discussion on \"Code Churn: Why the Files That Change Most Break Most\" | Hashnode"
description: "Discussion on \"Code Churn: Why the Files That Change Most Break Most\". Code churn is how much a file changes over a period of time: lines added, lines deleted, and how many separate commits touched it. High churn concentrated in a small set of files is one of the more re"
url: "https://hashnode.com/posts/code-churn-why-the-files-that-change-most-break-most/6af394ab62b23cd06187233e"
---

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# [Code Churn: Why the Files That Change Most Break Most](https://tomosu.hashnode.dev/code-churn-why-the-files-that-change-most-break-most?utm_source=hashnode&utm_medium=feed)

Code churn is how much a file changes over a period of time: lines added, lines deleted, and how many separate commits touched it. High churn concentrated in a small set of files is one of the more re

1d ago · 10 min read · tomosu.hashnode.dev  
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## Written by

[Parsa Mohammadi](https://hashnode.com/@tomosu)

@tomosu · London, UK

  
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Tomosu continuously scores every application and closes its reliability gaps across development, pre-merge and runtime, using the Production Reliability Index (PRI) and a multi-tier agentic system.

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