--- title: How we cut build times by two-thirds by deleting our CMS description: Sentry migrated its marketing site from Gatsby and a headless CMS to Astro with Markdown/Frontmatter, cutting build times from ~14 minutes to under 4 minutes... canonical: https://daily.dev/posts/how-we-cut-build-times-by-two-thirds-by-deleting-our-cms-1upjed2le twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How we cut build times by two-thirds by deleting our CMS | daily.dev og:description: Sentry migrated its marketing site from Gatsby and a headless CMS to Astro with Markdown/Frontmatter, cutting build times from ~14 minutes to under 4 minutes... og:url: https://daily.dev/posts/how-we-cut-build-times-by-two-thirds-by-deleting-our-cms-1upjed2le og:image: https://api.daily.dev/og/posts/1UPJed2Le.png og:image:alt: How we cut build times by two-thirds by deleting our CMS 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. # How we cut build times by two-thirds by deleting our CMS **[Sentry Engineering](https://daily.dev/sources/sentry)** · 12 min read · 0 upvotes · 0 comments ## Summary Sentry migrated its marketing site from Gatsby and a headless CMS to Astro with Markdown/Frontmatter, cutting build times from ~14 minutes to under 4 minutes and reducing broken staging builds by 95%. The team of 2.5 developers used Claude Code extensively for coding, data migration, and visual regression testing via a custom DOM Inspector MCP built on Puppeteer. Content management was replaced with Claude Skills that guide non-technical users through creating Frontmatter files, previewing changes locally, and opening pull requests — eliminating CMS subscription costs, schema limits, and external API failures. A Vercel Blob-based caching layer also resolved recurring marketing automation API rate limit failures during builds. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Affordable and Fast Migration](https://daily.dev/posts/affordable-and-fast-migration-4apsnn2pl) · Astro · 24 upvotes · 2 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#cms](https://daily.dev/tags/cms), [#claude-code](https://daily.dev/tags/claude-code), [#astro](https://daily.dev/tags/astro) [View this post on daily.dev](https://daily.dev/posts/how-we-cut-build-times-by-two-thirds-by-deleting-our-cms-1upjed2le) ```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":"How we cut build times by two-thirds by deleting our CMS","url":"https://daily.dev/posts/how-we-cut-build-times-by-two-thirds-by-deleting-our-cms-1upjed2le","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-we-cut-build-times-by-two-thirds-by-deleting-our-cms-1upjed2le"},"datePublished":"2026-07-09T06:35:54.568Z","dateModified":"2026-07-09T06:36:15.924Z","description":"Sentry migrated its marketing site from Gatsby and a headless CMS to Astro with Markdown/Frontmatter, cutting build times from ~14 minutes to under 4 minutes...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/a0dc76a9aee7f6fa0aabe29913a52ade?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/a0dc76a9aee7f6fa0aabe29913a52ade?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Sentry Engineering","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":"Sentry Engineering","logo":"https://media.daily.dev/image/upload/s--qqXwMThM--/f_auto/v1710505439/logos/sentry","url":"https://daily.dev/sources/sentry"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-we-cut-build-times-by-two-thirds-by-deleting-our-cms-1upjed2le","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"webdev,cms,claude-code,astro","timeRequired":"PT12M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sentry Engineering","item":"https://daily.dev/sources/sentry"},{"@type":"ListItem","position":3,"name":"How we cut build times by two-thirds by deleting our CMS"}]} ```