--- title: The Vary HTTP header | daily.dev description: The Vary HTTP header is used to configure multi-dimensional cache keys, preventing caching issues when different content is requested using different headers. canonical: https://daily.dev/posts/the-vary-http-header-vlncpflcp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: The Vary HTTP header | daily.dev og:description: The Vary HTTP header is used to configure multi-dimensional cache keys, preventing caching issues when different content is requested using different headers. og:url: https://daily.dev/posts/the-vary-http-header-vlncpflcp og:image: https://api.daily.dev/og/posts/VLNcPFLcp.png og:image:alt: The Vary HTTP header 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. # The Vary HTTP header **[ITNEXT](https://daily.dev/sources/itnext)** · 2 min read · 0 upvotes · 0 comments ## Summary The Vary HTTP header is used to configure multi-dimensional cache keys, preventing caching issues when different content is requested using different headers. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#rest-api](https://daily.dev/tags/rest-api) [View this post on daily.dev](https://daily.dev/posts/the-vary-http-header-vlncpflcp) ```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":"The Vary HTTP header","url":"https://daily.dev/posts/the-vary-http-header-vlncpflcp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/the-vary-http-header-vlncpflcp"},"datePublished":"2024-05-10T07:16:28.963Z","dateModified":"2024-05-10T07:16:28.235Z","description":"The Vary HTTP header is used to configure multi-dimensional cache keys, preventing caching issues when different content is requested using different headers.","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/bc30edb1398a936090f3c9e333e486ef?_a=AQAEuiZ","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/bc30edb1398a936090f3c9e333e486ef?_a=AQAEuiZ","isAccessibleForFree":true,"articleSection":"ITNEXT","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":"ITNEXT","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/itnext2","url":"https://daily.dev/sources/itnext"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/the-vary-http-header-vlncpflcp","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"rest-api","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ITNEXT","item":"https://daily.dev/sources/itnext"},{"@type":"ListItem","position":3,"name":"The Vary HTTP header"}]} ```