--- title: Large Codebases | daily.dev description: AI coding tools work well on large, mature codebases because they have years of accumulated context and patterns to draw from, enabling tasks that once took a... canonical: https://daily.dev/posts/large-codebases-0s80mex5d twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Large Codebases | daily.dev og:description: AI coding tools work well on large, mature codebases because they have years of accumulated context and patterns to draw from, enabling tasks that once took a... og:url: https://daily.dev/posts/large-codebases-0s80mex5d og:image: https://api.daily.dev/og/posts/0S80MEx5D.png og:image:alt: Large Codebases og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Large Codebases **[ThePrimeTime](https://daily.dev/sources/primeagen)** · 2 min read · 0 upvotes · 0 comments ## Summary AI coding tools work well on large, mature codebases because they have years of accumulated context and patterns to draw from, enabling tasks that once took a day to be done in 15 minutes. However, this success doesn't translate to greenfield projects. The real danger is that AI accelerates code generation so dramatically that bad architectural decisions now compound at 10-20x the scale before anyone notices — turning what used to be a 30,000-line mistake into a 500,000-line disaster. Simple bug fixes in mature codebases may be automatable, but the need for careful upfront thinking has never been higher. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [AI can 10x developers...in creating tech debt](https://daily.dev/posts/ai-can-10x-developers-in-creating-tech-debt-6avfrcy8v) · Stack Overflow Blog · 4 upvotes · 0 comments - [Medium](https://daily.dev/posts/medium-kluler3s4) · Medium · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/large-codebases-0s80mex5d) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Large Codebases","url":"https://daily.dev/posts/large-codebases-0s80mex5d","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/large-codebases-0s80mex5d"},"datePublished":"2026-06-09T13:03:57.809Z","dateModified":"2026-06-09T13:04:37.773Z","description":"AI coding tools work well on large, mature codebases because they have years of accumulated context and patterns to draw from, enabling tasks that once took a...","image":"https://i.ytimg.com/vi/DeNLjVyeAhQ/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/DeNLjVyeAhQ/sddefault.jpg","isAccessibleForFree":true,"articleSection":"ThePrimeTime","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ThePrimeTime","logo":"https://media.daily.dev/image/upload/s--J5-GjDeo--/f_auto/v1704628081/logos/primeagen.jpg","url":"https://daily.dev/sources/primeagen"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/large-codebases-0s80mex5d","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"","timeRequired":"PT2M","video":{"@type":"VideoObject","name":"Large Codebases","description":"AI coding tools work well on large, mature codebases because they have years of accumulated context and patterns to draw from, enabling tasks that once took a...","thumbnailUrl":"https://i.ytimg.com/vi/DeNLjVyeAhQ/sddefault.jpg","uploadDate":"2026-06-09T13:03:57.809Z","duration":"PT2M","url":"https://api.daily.dev/r/0S80MEx5D","embedUrl":"https://www.youtube.com/embed/DeNLjVyeAhQ"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ThePrimeTime","item":"https://daily.dev/sources/primeagen"},{"@type":"ListItem","position":3,"name":"Large Codebases"}]} ```