--- title: Chris's Wiki :: blog | daily.dev description: Unix kernels have name caches that store directory entry names and associated data, providing a fast path for directory name lookups. The name caches improve... canonical: https://daily.dev/posts/chris-s-wiki-blog-t9bbbiu8q twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Chris's Wiki :: blog | daily.dev og:description: Unix kernels have name caches that store directory entry names and associated data, providing a fast path for directory name lookups. The name caches improve... og:url: https://daily.dev/posts/chris-s-wiki-blog-t9bbbiu8q og:image: https://api.daily.dev/og/posts/t9BBbiu8Q.png og:image:alt: Chris's Wiki :: blog 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. # Chris's Wiki :: blog **[Hacker News](https://daily.dev/sources/hn)** · 4 min read · 0 upvotes · 0 comments ## Summary Unix kernels have name caches that store directory entry names and associated data, providing a fast path for directory name lookups. The name caches improve lookup speed, reduce kernel CPU usage, and can store negative entries indicating that a particular name isn't present. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments --- Tags: [#file-systems](https://daily.dev/tags/file-systems) [View this post on daily.dev](https://daily.dev/posts/chris-s-wiki-blog-t9bbbiu8q) ```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":"Chris's Wiki :: blog","url":"https://daily.dev/posts/chris-s-wiki-blog-t9bbbiu8q","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/chris-s-wiki-blog-t9bbbiu8q"},"datePublished":"2023-12-05T05:27:26.290Z","dateModified":"2025-09-06T02:42:30.637Z","description":"Unix kernels have name caches that store directory entry names and associated data, providing a fast path for directory name lookups. The name caches improve...","image":"https://media.daily.dev/image/upload/s--HRgLpUt6--/f_auto/v1722860399/public/Placeholder%2003","thumbnailUrl":"https://media.daily.dev/image/upload/s--HRgLpUt6--/f_auto/v1722860399/public/Placeholder%2003","isAccessibleForFree":true,"articleSection":"Hacker News","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":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/chris-s-wiki-blog-t9bbbiu8q","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"file-systems","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"Chris's Wiki :: blog"}]} ```