--- title: How Facebook Keeps Millions of Servers Synced | daily.dev description: This post discusses the importance of keeping system clocks synchronized in distributed systems and explores the use of Network Time Protocol (NTP) and... canonical: https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How Facebook Keeps Millions of Servers Synced | daily.dev og:description: This post discusses the importance of keeping system clocks synchronized in distributed systems and explores the use of Network Time Protocol (NTP) and... og:url: https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx og:image: https://api.daily.dev/og/posts/oNuCxvJbX.png og:image:alt: How Facebook Keeps Millions of Servers Synced 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 Facebook Keeps Millions of Servers Synced **[Quastor Daily](https://daily.dev/sources/quastor)** · 11 min read · 16 upvotes · 1 comments ## Summary This post discusses the importance of keeping system clocks synchronized in distributed systems and explores the use of Network Time Protocol (NTP) and Precision Time Protocol (PTP) in achieving synchronization. It also highlights the benefits of switching to PTP at Facebook. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@sajat** · 0 upvotes > https://engineering.fb.com/2022/11/21/production-engineering/precision-time-protocol-at-meta/?utm_source=blog.quastor.org&utm_medium=referral&utm_campaign=how-facebook-keeps-millions-of-servers-synced > Much better --- Tags: [#facebook](https://daily.dev/tags/facebook) [View this post on daily.dev](https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx) ```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 Facebook Keeps Millions of Servers Synced","url":"https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx"},"datePublished":"2024-05-02T20:31:06.465Z","dateModified":"2024-05-09T09:28:47.883Z","description":"This post discusses the importance of keeping system clocks synchronized in distributed systems and explores the use of Network Time Protocol (NTP) and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/1eaf592b0aef9d16a980d96382904312?_a=AQAEuiZ","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/1eaf592b0aef9d16a980d96382904312?_a=AQAEuiZ","isAccessibleForFree":true,"articleSection":"Quastor Daily","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":"Quastor Daily","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/073e935e4893445ba562bf9e1ca38ec1","url":"https://daily.dev/sources/quastor"},"commentCount":1,"discussionUrl":"https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":16},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"keywords":"facebook","timeRequired":"PT11M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Quastor Daily","item":"https://daily.dev/sources/quastor"},{"@type":"ListItem","position":3,"name":"How Facebook Keeps Millions of Servers Synced"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/how-facebook-keeps-millions-of-servers-synced-onucxvjbx","comment":[{"@type":"Comment","text":"https://engineering.fb.com/2022/11/21/production-engineering/precision-time-protocol-at-meta/?utm_source=blog.quastor.org&utm_medium=referral&utm_campaign=how-facebook-keeps-millions-of-servers-synced\nMuch better","datePublished":"2024-06-26T07:32:45.645Z","url":"https://daily.dev/posts/oNuCxvJbX#c-x3nYDMHl9","author":{"@type":"Person","name":"Sajat Shrestha","url":"https://daily.dev/sajat","image":"https://lh3.googleusercontent.com/a/ACg8ocIsN1v5N4klckOMtyR5_UBCh6NvL0IGLWeWH1_PNvmBDAz5CDlr=s96-c"}}]} ```