--- title: Dropbox Collaborates with GitHub to Reduce Monorepo Size... description: Dropbox reduced its backend monorepo from 87GB to 20GB — a 77% reduction — by addressing inefficiencies in Git's delta compression and packfile generation. The... canonical: https://daily.dev/posts/dropbox-collaborates-with-github-to-reduce-monorepo-size-from-87gb-to-20gb-uchgyedof twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Dropbox Collaborates with GitHub to Reduce Monorepo Size from 87GB to 20GB | daily.dev og:description: Dropbox reduced its backend monorepo from 87GB to 20GB — a 77% reduction — by addressing inefficiencies in Git's delta compression and packfile generation. The... og:url: https://daily.dev/posts/dropbox-collaborates-with-github-to-reduce-monorepo-size-from-87gb-to-20gb-uchgyedof og:image: https://api.daily.dev/og/posts/uChgyEdoF.png og:image:alt: Dropbox Collaborates with GitHub to Reduce Monorepo Size from 87GB to 20GB 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. # Dropbox Collaborates with GitHub to Reduce Monorepo Size from 87GB to 20GB **[InfoQ](https://daily.dev/sources/infoq)** · 3 min read · 2 upvotes · 0 comments ## Summary Dropbox reduced its backend monorepo from 87GB to 20GB — a 77% reduction — by addressing inefficiencies in Git's delta compression and packfile generation. The root cause was not large binaries or bad commits, but suboptimal Git storage heuristics at scale. Engineers collaborated with GitHub to tune server-side repacking parameters including delta window and depth behavior, validating changes in mirrored environments before production rollout. The result: clone times dropped from over an hour to under 15 minutes, CI pipelines improved, and developer onboarding became faster. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Taming the monorepo beast: Our journey to a leaner, faster GitLab repo](https://daily.dev/posts/taming-the-monorepo-beast-our-journey-to-a-leaner-faster-gitlab-repo-vknm0oblj) · Grab Tech Blog · 1 upvotes · 0 comments --- Tags: [#general-programming](https://daily.dev/tags/general-programming), [#cicd](https://daily.dev/tags/cicd), [#git](https://daily.dev/tags/git) [View this post on daily.dev](https://daily.dev/posts/dropbox-collaborates-with-github-to-reduce-monorepo-size-from-87gb-to-20gb-uchgyedof) ```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":"Dropbox Collaborates with GitHub to Reduce Monorepo Size from 87GB to 20GB","url":"https://daily.dev/posts/dropbox-collaborates-with-github-to-reduce-monorepo-size-from-87gb-to-20gb-uchgyedof","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/dropbox-collaborates-with-github-to-reduce-monorepo-size-from-87gb-to-20gb-uchgyedof"},"datePublished":"2026-04-22T14:24:58.561Z","dateModified":"2026-04-22T14:25:18.600Z","description":"Dropbox reduced its backend monorepo from 87GB to 20GB — a 77% reduction — by addressing inefficiencies in Git's delta compression and packfile generation. 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