1231 lines
91 KiB
HTML
1231 lines
91 KiB
HTML
<!DOCTYPE html>
|
||
<html lang="en-US">
|
||
<head>
|
||
<meta charset="UTF-8">
|
||
<meta http-equiv="X-UA-Compatible" content="IE=edge">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
|
||
<meta name="mobile-web-app-capable" content="yes">
|
||
<meta name="apple-mobile-web-app-capable" content="yes">
|
||
<meta name="apple-mobile-web-app-title" content="Engineering at Meta - Engineering at Meta Blog">
|
||
<meta property="fb:app_id" content="1425766027653270" />
|
||
<link rel="profile" href="http://gmpg.org/xfn/11">
|
||
<link rel="pingback" href="https://engineering.fb.com/xmlrpc.php">
|
||
<meta name='robots' content='index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1' />
|
||
<script async src="https://engineering.fb.com/wp-content/themes/code-fb-com/dist/js/optimize.min.js"></script>
|
||
|
||
<!-- This site is optimized with the Yoast SEO Premium plugin v19.3 (Yoast SEO v27.3) - https://yoast.com/product/yoast-seo-premium-wordpress/ -->
|
||
<title>StateService: Automating recovery of third-party services - Engineering at Meta</title>
|
||
<meta name="description" content="StateService is a state machine as a service we are open-sourcing for use by engineering and ops teams to automate deployments and decrease recovery time." />
|
||
<link rel="canonical" href="https://engineering.fb.com/2018/10/04/open-source/stateservice/" />
|
||
<meta name="twitter:label1" content="Written by" />
|
||
<meta name="twitter:data1" content="Declan Ryan, changigi649" />
|
||
<meta name="twitter:label2" content="Est. reading time" />
|
||
<meta name="twitter:data2" content="3 minutes" />
|
||
<script type="application/ld+json" class="yoast-schema-graph">{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#article","isPartOf":{"@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/"},"author":[{"@id":"https:\/\/engineering.fb.com\/#\/schema\/person\/image\/4c4e81b75a15bcd5242e7076864d1aae"},{"@id":"https:\/\/engineering.fb.com\/#\/schema\/person\/7167c692371a46d5bb5879bbd971c6c0"}],"headline":"Open-sourcing StateService: Automating recovery of third-party services after a major outage","datePublished":"2018-10-04T18:35:00+00:00","dateModified":"2020-03-24T04:55:41+00:00","mainEntityOfPage":{"@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/"},"wordCount":563,"publisher":{"@id":"https:\/\/engineering.fb.com\/#organization"},"image":{"@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#primaryimage"},"thumbnailUrl":"https:\/\/engineering.fb.com\/wp-content\/uploads\/2018\/09\/StateService-LogoFP.png","articleSection":["Data Center Engineering","Open Source"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/","url":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/","name":"StateService: Automating recovery of third-party services - Engineering at Meta","isPartOf":{"@id":"https:\/\/engineering.fb.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#primaryimage"},"image":{"@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#primaryimage"},"thumbnailUrl":"https:\/\/engineering.fb.com\/wp-content\/uploads\/2018\/09\/StateService-LogoFP.png","datePublished":"2018-10-04T18:35:00+00:00","dateModified":"2020-03-24T04:55:41+00:00","description":"StateService is a state machine as a service we are open-sourcing for use by engineering and ops teams to automate deployments and decrease recovery time.","breadcrumb":{"@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#primaryimage","url":"https:\/\/engineering.fb.com\/wp-content\/uploads\/2018\/09\/StateService-LogoFP.png","contentUrl":"https:\/\/engineering.fb.com\/wp-content\/uploads\/2018\/09\/StateService-LogoFP.png","width":2000,"height":1125,"caption":"Logo for StateService, Facebook's newly open sourced state machine as a service"},{"@type":"BreadcrumbList","@id":"https:\/\/engineering.fb.com\/2018\/10\/04\/open-source\/stateservice\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/engineering.fb.com\/"},{"@type":"ListItem","position":2,"name":"Open-sourcing StateService: Automating recovery of third-party services after a major outage"}]},{"@type":"WebSite","@id":"https:\/\/engineering.fb.com\/#website","url":"https:\/\/engineering.fb.com\/","name":"Engineering at Meta","description":"Engineering at Meta Blog","publisher":{"@id":"https:\/\/engineering.fb.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/engineering.fb.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/engineering.fb.com\/#organization","name":"Meta","url":"https:\/\/engineering.fb.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/engineering.fb.com\/#\/schema\/logo\/image\/","url":"https:\/\/engineering.fb.com\/wp-content\/uploads\/2023\/08\/Meta_lockup_positive-primary_RGB.jpg","contentUrl":"https:\/\/engineering.fb.com\/wp-content\/uploads\/2023\/08\/Meta_lockup_positive-primary_RGB.jpg","width":29011,"height":12501,"caption":"Meta"},"image":{"@id":"https:\/\/engineering.fb.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/Engineering\/","https:\/\/x.com\/fb_engineering"]},[],{"@type":"Person","@id":"https:\/\/engineering.fb.com\/#\/schema\/person\/image\/4c4e81b75a15bcd5242e7076864d1aae","name":"Declan Ryan","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g23494c9101089ad44ae88ce9d2f56aac","url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","caption":"Declan Ryan"},"url":"https:\/\/engineering.fb.com\/author\/declan-ryan\/"},{"@type":"Person","@id":"https:\/\/engineering.fb.com\/#\/schema\/person\/7167c692371a46d5bb5879bbd971c6c0","name":"changigi649","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/a090692c0af9b5ed6f8071e0a05e3147f0ba61b52a51c0671d073d9adb4e198e?s=96&d=mm&r=g8fd1e2b34e75c09c4aea578e73cbde79","url":"https:\/\/secure.gravatar.com\/avatar\/a090692c0af9b5ed6f8071e0a05e3147f0ba61b52a51c0671d073d9adb4e198e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a090692c0af9b5ed6f8071e0a05e3147f0ba61b52a51c0671d073d9adb4e198e?s=96&d=mm&r=g","caption":"changigi649"},"url":"https:\/\/engineering.fb.com\/author\/changigi649\/"}]}</script>
|
||
<!-- / Yoast SEO Premium plugin. -->
|
||
|
||
|
||
<link rel='dns-prefetch' href='//secure.gravatar.com' />
|
||
<link rel='dns-prefetch' href='//v0.wordpress.com' />
|
||
<link rel="alternate" type="application/rss+xml" title="Engineering at Meta » Feed" href="https://engineering.fb.com/feed/" />
|
||
<link rel="alternate" type="application/rss+xml" title="Engineering at Meta » Comments Feed" href="https://engineering.fb.com/comments/feed/" />
|
||
<script async src="https://www.googleoptimize.com/optimize.js?id=OPT-TPNDQC5" onerror="dataLayer.hide.end && dataLayer.hide.end()"></script>
|
||
<link rel="alternate" title="oEmbed (JSON)" type="application/json+oembed" href="https://engineering.fb.com/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fengineering.fb.com%2F2018%2F10%2F04%2Fopen-source%2Fstateservice%2F" />
|
||
<link rel="alternate" title="oEmbed (XML)" type="text/xml+oembed" href="https://engineering.fb.com/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fengineering.fb.com%2F2018%2F10%2F04%2Fopen-source%2Fstateservice%2F&format=xml" />
|
||
<style id="wp-img-auto-sizes-contain-inline-css">
|
||
img:is([sizes=auto i],[sizes^="auto," i]){contain-intrinsic-size:3000px 1500px}
|
||
/*# sourceURL=wp-img-auto-sizes-contain-inline-css */
|
||
</style>
|
||
<style id="wp-emoji-styles-inline-css">
|
||
|
||
img.wp-smiley, img.emoji {
|
||
display: inline !important;
|
||
border: none !important;
|
||
box-shadow: none !important;
|
||
height: 1em !important;
|
||
width: 1em !important;
|
||
margin: 0 0.07em !important;
|
||
vertical-align: -0.1em !important;
|
||
background: none !important;
|
||
padding: 0 !important;
|
||
}
|
||
/*# sourceURL=wp-emoji-styles-inline-css */
|
||
</style>
|
||
<style id="wp-block-library-inline-css">
|
||
:root{--wp-block-synced-color:#7a00df;--wp-block-synced-color--rgb:122,0,223;--wp-bound-block-color:var(--wp-block-synced-color);--wp-editor-canvas-background:#ddd;--wp-admin-theme-color:#007cba;--wp-admin-theme-color--rgb:0,124,186;--wp-admin-theme-color-darker-10:#006ba1;--wp-admin-theme-color-darker-10--rgb:0,107,160.5;--wp-admin-theme-color-darker-20:#005a87;--wp-admin-theme-color-darker-20--rgb:0,90,135;--wp-admin-border-width-focus:2px}@media (min-resolution:192dpi){:root{--wp-admin-border-width-focus:1.5px}}.wp-element-button{cursor:pointer}:root .has-very-light-gray-background-color{background-color:#eee}:root .has-very-dark-gray-background-color{background-color:#313131}:root .has-very-light-gray-color{color:#eee}:root .has-very-dark-gray-color{color:#313131}:root .has-vivid-green-cyan-to-vivid-cyan-blue-gradient-background{background:linear-gradient(135deg,#00d084,#0693e3)}:root .has-purple-crush-gradient-background{background:linear-gradient(135deg,#34e2e4,#4721fb 50%,#ab1dfe)}:root .has-hazy-dawn-gradient-background{background:linear-gradient(135deg,#faaca8,#dad0ec)}:root .has-subdued-olive-gradient-background{background:linear-gradient(135deg,#fafae1,#67a671)}:root .has-atomic-cream-gradient-background{background:linear-gradient(135deg,#fdd79a,#004a59)}:root .has-nightshade-gradient-background{background:linear-gradient(135deg,#330968,#31cdcf)}:root .has-midnight-gradient-background{background:linear-gradient(135deg,#020381,#2874fc)}:root{--wp--preset--font-size--normal:16px;--wp--preset--font-size--huge:42px}.has-regular-font-size{font-size:1em}.has-larger-font-size{font-size:2.625em}.has-normal-font-size{font-size:var(--wp--preset--font-size--normal)}.has-huge-font-size{font-size:var(--wp--preset--font-size--huge)}:root .has-text-align-center{text-align:center}:root .has-text-align-left{text-align:left}:root .has-text-align-right{text-align:right}.has-fit-text{white-space:nowrap!important}#end-resizable-editor-section{display:none}.aligncenter{clear:both}.items-justified-left{justify-content:flex-start}.items-justified-center{justify-content:center}.items-justified-right{justify-content:flex-end}.items-justified-space-between{justify-content:space-between}.screen-reader-text{word-wrap:normal!important;border:0;clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;word-break:normal!important}.screen-reader-text:focus{background-color:#ddd;clip-path:none;color:#444;display:block;font-size:1em;height:auto;left:5px;line-height:normal;padding:15px 23px 14px;text-decoration:none;top:5px;width:auto;z-index:100000}html :where(.has-border-color){border-style:solid}html :where([style^=border-color],[style*=";border-color"],[style*="; border-color"]){border-style:solid}html :where([style^=border-top-color],[style*=";border-top-color"],[style*="; border-top-color"]){border-top-style:solid}html :where([style^=border-right-color],[style*=";border-right-color"],[style*="; border-right-color"]){border-right-style:solid}html :where([style^=border-bottom-color],[style*=";border-bottom-color"],[style*="; border-bottom-color"]){border-bottom-style:solid}html :where([style^=border-left-color],[style*=";border-left-color"],[style*="; border-left-color"]){border-left-style:solid}html :where([style^=border-width],[style*=";border-width"],[style*="; border-width"]){border-style:solid}html :where([style^=border-top-width],[style*=";border-top-width"],[style*="; border-top-width"]){border-top-style:solid}html :where([style^=border-right-width],[style*=";border-right-width"],[style*="; border-right-width"]){border-right-style:solid}html :where([style^=border-bottom-width],[style*=";border-bottom-width"],[style*="; border-bottom-width"]){border-bottom-style:solid}html :where([style^=border-left-width],[style*=";border-left-width"],[style*="; border-left-width"]){border-left-style:solid}html :where(img[class*=wp-image-]){height:auto;max-width:100%}:where(figure){margin:0 0 1em}html :where(.is-position-sticky){--wp-admin--admin-bar--position-offset:var(--wp-admin--admin-bar--height,0px)}@media screen and (max-width:600px){html :where(.is-position-sticky){--wp-admin--admin-bar--position-offset:0px}}
|
||
|
||
/*# sourceURL=/wp-includes/css/dist/block-library/common.min.css */
|
||
</style>
|
||
<style id="classic-theme-styles-inline-css">
|
||
/*! This file is auto-generated */
|
||
.wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}
|
||
/*# sourceURL=/wp-includes/css/classic-themes.min.css */
|
||
</style>
|
||
|
||
<style id="global-styles-inline-css">
|
||
:root{--wp--preset--aspect-ratio--square: 1;--wp--preset--aspect-ratio--4-3: 4/3;--wp--preset--aspect-ratio--3-4: 3/4;--wp--preset--aspect-ratio--3-2: 3/2;--wp--preset--aspect-ratio--2-3: 2/3;--wp--preset--aspect-ratio--16-9: 16/9;--wp--preset--aspect-ratio--9-16: 9/16;--wp--preset--color--black: #000000;--wp--preset--color--cyan-bluish-gray: #abb8c3;--wp--preset--color--white: #ffffff;--wp--preset--color--pale-pink: #f78da7;--wp--preset--color--vivid-red: #cf2e2e;--wp--preset--color--luminous-vivid-orange: #ff6900;--wp--preset--color--luminous-vivid-amber: #fcb900;--wp--preset--color--light-green-cyan: #7bdcb5;--wp--preset--color--vivid-green-cyan: #00d084;--wp--preset--color--pale-cyan-blue: #8ed1fc;--wp--preset--color--vivid-cyan-blue: #0693e3;--wp--preset--color--vivid-purple: #9b51e0;--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple: linear-gradient(135deg,rgb(6,147,227) 0%,rgb(155,81,224) 100%);--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan: linear-gradient(135deg,rgb(122,220,180) 0%,rgb(0,208,130) 100%);--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange: linear-gradient(135deg,rgb(252,185,0) 0%,rgb(255,105,0) 100%);--wp--preset--gradient--luminous-vivid-orange-to-vivid-red: linear-gradient(135deg,rgb(255,105,0) 0%,rgb(207,46,46) 100%);--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray: linear-gradient(135deg,rgb(238,238,238) 0%,rgb(169,184,195) 100%);--wp--preset--gradient--cool-to-warm-spectrum: linear-gradient(135deg,rgb(74,234,220) 0%,rgb(151,120,209) 20%,rgb(207,42,186) 40%,rgb(238,44,130) 60%,rgb(251,105,98) 80%,rgb(254,248,76) 100%);--wp--preset--gradient--blush-light-purple: linear-gradient(135deg,rgb(255,206,236) 0%,rgb(152,150,240) 100%);--wp--preset--gradient--blush-bordeaux: linear-gradient(135deg,rgb(254,205,165) 0%,rgb(254,45,45) 50%,rgb(107,0,62) 100%);--wp--preset--gradient--luminous-dusk: linear-gradient(135deg,rgb(255,203,112) 0%,rgb(199,81,192) 50%,rgb(65,88,208) 100%);--wp--preset--gradient--pale-ocean: linear-gradient(135deg,rgb(255,245,203) 0%,rgb(182,227,212) 50%,rgb(51,167,181) 100%);--wp--preset--gradient--electric-grass: linear-gradient(135deg,rgb(202,248,128) 0%,rgb(113,206,126) 100%);--wp--preset--gradient--midnight: linear-gradient(135deg,rgb(2,3,129) 0%,rgb(40,116,252) 100%);--wp--preset--font-size--small: 13px;--wp--preset--font-size--medium: 20px;--wp--preset--font-size--large: 36px;--wp--preset--font-size--x-large: 42px;--wp--preset--spacing--20: 0.44rem;--wp--preset--spacing--30: 0.67rem;--wp--preset--spacing--40: 1rem;--wp--preset--spacing--50: 1.5rem;--wp--preset--spacing--60: 2.25rem;--wp--preset--spacing--70: 3.38rem;--wp--preset--spacing--80: 5.06rem;--wp--preset--shadow--natural: 6px 6px 9px rgba(0, 0, 0, 0.2);--wp--preset--shadow--deep: 12px 12px 50px rgba(0, 0, 0, 0.4);--wp--preset--shadow--sharp: 6px 6px 0px rgba(0, 0, 0, 0.2);--wp--preset--shadow--outlined: 6px 6px 0px -3px rgb(255, 255, 255), 6px 6px rgb(0, 0, 0);--wp--preset--shadow--crisp: 6px 6px 0px rgb(0, 0, 0);}.wp-block-button{--wp--preset--dimension--25: 25%;--wp--preset--dimension--50: 50%;--wp--preset--dimension--75: 75%;--wp--preset--dimension--100: 100%;}:where(body) { margin: 0; }:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}body{padding-top: 0px;padding-right: 0px;padding-bottom: 0px;padding-left: 0px;}:root :where(.wp-element-button, .wp-block-button__link){background-color: #32373c;border-width: 0;color: #fff;font-family: inherit;font-size: inherit;font-style: inherit;font-weight: inherit;letter-spacing: inherit;line-height: inherit;padding-top: calc(0.667em + 2px);padding-right: calc(1.333em + 2px);padding-bottom: calc(0.667em + 2px);padding-left: calc(1.333em + 2px);text-decoration: none;text-transform: inherit;}.has-black-color{color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-color{color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-color{color: var(--wp--preset--color--white) !important;}.has-pale-pink-color{color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-color{color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-color{color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-color{color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-color{color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-color{color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-color{color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-color{color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-color{color: var(--wp--preset--color--vivid-purple) !important;}.has-black-background-color{background-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-background-color{background-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-background-color{background-color: var(--wp--preset--color--white) !important;}.has-pale-pink-background-color{background-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-background-color{background-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-background-color{background-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-background-color{background-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-background-color{background-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-background-color{background-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-background-color{background-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-background-color{background-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-background-color{background-color: var(--wp--preset--color--vivid-purple) !important;}.has-black-border-color{border-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-border-color{border-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-border-color{border-color: var(--wp--preset--color--white) !important;}.has-pale-pink-border-color{border-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-border-color{border-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-border-color{border-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-border-color{border-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-border-color{border-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-border-color{border-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-border-color{border-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-border-color{border-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-border-color{border-color: var(--wp--preset--color--vivid-purple) !important;}.has-vivid-cyan-blue-to-vivid-purple-gradient-background{background: var(--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple) !important;}.has-light-green-cyan-to-vivid-green-cyan-gradient-background{background: var(--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan) !important;}.has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange) !important;}.has-luminous-vivid-orange-to-vivid-red-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-orange-to-vivid-red) !important;}.has-very-light-gray-to-cyan-bluish-gray-gradient-background{background: var(--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray) !important;}.has-cool-to-warm-spectrum-gradient-background{background: var(--wp--preset--gradient--cool-to-warm-spectrum) !important;}.has-blush-light-purple-gradient-background{background: var(--wp--preset--gradient--blush-light-purple) !important;}.has-blush-bordeaux-gradient-background{background: var(--wp--preset--gradient--blush-bordeaux) !important;}.has-luminous-dusk-gradient-background{background: var(--wp--preset--gradient--luminous-dusk) !important;}.has-pale-ocean-gradient-background{background: var(--wp--preset--gradient--pale-ocean) !important;}.has-electric-grass-gradient-background{background: var(--wp--preset--gradient--electric-grass) !important;}.has-midnight-gradient-background{background: var(--wp--preset--gradient--midnight) !important;}.has-small-font-size{font-size: var(--wp--preset--font-size--small) !important;}.has-medium-font-size{font-size: var(--wp--preset--font-size--medium) !important;}.has-large-font-size{font-size: var(--wp--preset--font-size--large) !important;}.has-x-large-font-size{font-size: var(--wp--preset--font-size--x-large) !important;}
|
||
/*# sourceURL=global-styles-inline-css */
|
||
</style>
|
||
|
||
<link rel='stylesheet' id='all-css-12' href='https://engineering.fb.com/_static/??-eJyNjUsOwjAMRC9EaiqghQXiKFVqhzSQn+pEiNuTFJBAbNjZTzNv4BYFBp+UTxBt1sYzFKQpzpVz5WQ4QSUv0CDzCj6KaVJOMWAgJc5jwe7ZKTnAyVgSS6Jxxv90XRbv3YtKUeJVtF3TgguUbZHyJGdFkui+nMbrvxWD8QhjLvvAAY20wgYd+OupspM7tv3+sO533Wb7AImQY4U=' type='text/css' media='all' />
|
||
<script id="gdprconsent-js" src="https://engineering.fb.com/wp-content/plugins/wp-gdpr-consent/dist/gdprconsent.js?ver=2.0.0"></script>
|
||
<script id="gdprconsent-js-after">
|
||
if (window.gdprSafeTrack) {
|
||
window.gdprSafeTrack('https://www.googletagmanager.com/gtag/js?id=391063774');
|
||
window.gdprSafeTrack(function() {
|
||
var google_analytics_g4 = decodeURIComponent( '391063774' );
|
||
window.dataLayer = window.dataLayer || [];
|
||
function gtag(){dataLayer.push(arguments);}
|
||
gtag('js', new Date());
|
||
gtag('config', google_analytics_g4);
|
||
});
|
||
}
|
||
if (window.gdprSafeTrack) {
|
||
window.gdprSafeTrack(function() {
|
||
var google_tag_manager = decodeURIComponent( 'GTM-KZRLGZ8' );
|
||
(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
|
||
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
|
||
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
|
||
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
|
||
})(window,document,'script','dataLayer',google_tag_manager);
|
||
});
|
||
}
|
||
if (window.gdprSafeTrack) {
|
||
window.gdprSafeTrack(function() {
|
||
var facebook_pixel = decodeURIComponent( '660742068067366' );
|
||
!function(f,b,e,v,n,t,s)
|
||
{if(f.fbq)return;n=f.fbq=function(){n.callMethod?
|
||
n.callMethod.apply(n,arguments):n.queue.push(arguments)};
|
||
if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
|
||
n.queue=[];t=b.createElement(e);t.async=!0;
|
||
t.src=v;s=b.getElementsByTagName(e)[0];
|
||
s.parentNode.insertBefore(t,s)}(window, document,'script',
|
||
'https://connect.facebook.net/en_US/fbevents.js');
|
||
fbq('init', facebook_pixel);
|
||
fbq('track', 'PageView');
|
||
});
|
||
}
|
||
//# sourceURL=gdprconsent-js-after
|
||
</script>
|
||
<script type="text/javascript" src="https://engineering.fb.com/_static/??-eJzTLy/QzcxLzilNSS3WzwKiwtLUokoopZebmaeXVayjj0+Rbm5melFiSSpUsX2uraG5hbmZgYmloUkWAK+3Iic=" ></script><script type="text/javascript" src="https://engineering.fb.com/wp-content/themes/understrap/js/popper.min.js?m=1773259670g" ></script><link rel="https://api.w.org/" href="https://engineering.fb.com/wp-json/" /><link rel="alternate" title="JSON" type="application/json" href="https://engineering.fb.com/wp-json/wp/v2/posts/10312" /><link rel="EditURI" type="application/rsd+xml" title="RSD" href="https://engineering.fb.com/xmlrpc.php?rsd" />
|
||
<meta name="generator" content="WordPress 7.1" />
|
||
<link rel='shortlink' href='https://wp.me/pa0Lhq-2Gk' />
|
||
<link rel="preload" href="https://engineering.fb.com/wp-content/themes/code-fb-com/fonts/FacebookReader-Medium.woff2" as="font" type="font/woff2" crossorigin="anonymous"><link rel="preload" href="https://engineering.fb.com/wp-content/themes/code-fb-com/fonts/FacebookReader-Regular.woff2" as="font" type="font/woff2" crossorigin="anonymous"><link rel="preload" href="https://engineering.fb.com/wp-content/themes/code-fb-com/fonts/Optimistic_Display_W_Md.woff2" as="font" type="font/woff2" crossorigin="anonymous">
|
||
<!-- Jetpack Open Graph Tags -->
|
||
<meta property="og:type" content="article" />
|
||
<meta property="og:title" content="Open-sourcing StateService: Automating recovery of third-party services after a major outage" />
|
||
<meta property="og:url" content="https://engineering.fb.com/2018/10/04/open-source/stateservice/" />
|
||
<meta property="og:description" content="At Facebook, our services are designed to recover automatically from a major outage, such as the loss of a data center due to a natural disaster. Most of our production services are built in-house …" />
|
||
<meta property="article:published_time" content="2018-10-04T18:35:00+00:00" />
|
||
<meta property="article:modified_time" content="2020-03-24T04:55:41+00:00" />
|
||
<meta property="og:site_name" content="Engineering at Meta" />
|
||
<meta property="og:image" content="https://engineering.fb.com/wp-content/uploads/2018/09/StateService-LogoFP.png" />
|
||
<meta property="og:image:width" content="2000" />
|
||
<meta property="og:image:height" content="1125" />
|
||
<meta property="og:image:alt" content="Logo for StateService, Facebook's newly open sourced state machine as a service" />
|
||
<meta property="og:locale" content="en_US" />
|
||
<meta name="twitter:text:title" content="Open-sourcing StateService: Automating recovery of third-party services after a major outage" />
|
||
<meta name="twitter:image" content="https://engineering.fb.com/wp-content/uploads/2018/09/StateService-LogoFP.png?w=640" />
|
||
<meta name="twitter:image:alt" content="Logo for StateService, Facebook's newly open sourced state machine as a service" />
|
||
<meta name="twitter:card" content="summary_large_image" />
|
||
|
||
<!-- End Jetpack Open Graph Tags -->
|
||
<style id="wp-custom-css">
|
||
.table-of-contents {
|
||
position: sticky;
|
||
top: 20px;
|
||
background: #fff;
|
||
padding: 1em;
|
||
border: 1px solid #ddd;
|
||
border-radius: 8px;
|
||
box-shadow: 0 2px 8px rgba(0,0,0,0.1);
|
||
max-width: 250px;
|
||
}
|
||
</style>
|
||
|
||
<link rel="shortcut icon" href="https://engineering.fb.com/wp-content/themes/code-fb-com/favicon.ico" />
|
||
</head>
|
||
|
||
<body class="wp-singular post-template-default single single-post postid-10312 single-format-standard wp-theme-understrap wp-child-theme-code-fb-com group-blog">
|
||
|
||
<div class="hfeed site" id="page">
|
||
|
||
<!-- ******************* The Navbar Area ******************* -->
|
||
<div class="wrapper-fluid wrapper-navbar" id="wrapper-navbar">
|
||
<a class="skip-link screen-reader-text sr-only" href="#content">
|
||
Skip to content </a>
|
||
|
||
<nav class="navbar navbar-expand-std">
|
||
|
||
<div class="nav-container">
|
||
|
||
|
||
<!-- Your site title as branding in the menu -->
|
||
|
||
<div class="nav-top-row">
|
||
|
||
<h1 class="navbar-brand mb-0">
|
||
<a rel="home" href="https://engineering.fb.com/" title="Engineering at Meta">
|
||
<img class="navbar-brand-logo" src="https://engineering.fb.com/wp-content/themes/code-fb-com/img/logo-meta.svg" class="navbar-brand-logo" alt="Engineering at Meta" width="215" height="40" loading="lazy">
|
||
</a>
|
||
</h1>
|
||
|
||
<!-- end custom logo -->
|
||
<label for="search" class="screen-reader-text">Search this site</label>
|
||
<input type="text" id="search" name="search" class="form-control-lg navbar-search" autocomplete="off">
|
||
|
||
<button class="navbar-toggler navbar-searchbar-toggler"
|
||
type="button"
|
||
data-toggle="collapse"
|
||
data-target="#searchbarDropdown"
|
||
aria-controls="searchbarDropdown"
|
||
aria-expanded="false"
|
||
aria-label="Toggle navigation">
|
||
<img src="https://engineering.fb.com/wp-content/themes/code-fb-com/img/icon-search.svg" class="navbar-mobile-search-icon" loading="lazy" width="24" height="25" />
|
||
</button>
|
||
|
||
<!-- desktop language menu (mobile language menu is implemented via jQuery)-->
|
||
<div class="notranslate nice-select navbar-language form-control">
|
||
</div>
|
||
|
||
<button class="navbar-toggler collapsed navbar-menu-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
|
||
<span class="icon-bar"></span>
|
||
<span class="icon-bar"></span>
|
||
<span class="icon-bar"></span>
|
||
</button>
|
||
|
||
</div>
|
||
|
||
<div class="navbar-border"></div>
|
||
|
||
<!-- The WordPress Menu goes here -->
|
||
<div id="navbarNavDropdown" class="collapse navbar-collapse"><ul id="main-menu" class="navbar-nav"><li id="menu-item-60" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children nav-item menu-item-60 dropdown"><a title="Open Source" href="#" data-toggle="dropdown" class="nav-link dropdown-toggle">Open Source <span class="caret"></span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 129 129" enable-background="new 0 0 129 129" width="12px" height="15px">
|
||
<polyline points="40 50 80 90 120 50" stroke="#adb1b8" stroke-width="10" stroke-linecap="butt" fill="none" stroke-linejoin="miter"/>
|
||
</svg></a>
|
||
<ul class=" dropdown-menu" role="menu">
|
||
<li id="menu-item-12330" class="menu-item menu-item-type-taxonomy menu-item-object-category current-post-ancestor current-menu-parent current-post-parent nav-item menu-item-12330"><a title="Open Source" href="https://engineering.fb.com/category/open-source/" class="nav-link">Open Source</a></li>
|
||
<li id="menu-item-12331" class="menu-item menu-item-type-custom menu-item-object-custom nav-item menu-item-12331"><a title="Meta Open Source" href="https://opensource.fb.com" class="nav-link">Meta Open Source</a></li>
|
||
</ul>
|
||
</li>
|
||
<li id="menu-item-2686" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children nav-item menu-item-2686 dropdown"><a title="Platforms" href="#" data-toggle="dropdown" class="nav-link dropdown-toggle">Platforms <span class="caret"></span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 129 129" enable-background="new 0 0 129 129" width="12px" height="15px">
|
||
<polyline points="40 50 80 90 120 50" stroke="#adb1b8" stroke-width="10" stroke-linecap="butt" fill="none" stroke-linejoin="miter"/>
|
||
</svg></a>
|
||
<ul class=" dropdown-menu" role="menu">
|
||
<li id="menu-item-65" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-65"><a title="Android" href="https://engineering.fb.com/category/android/" class="nav-link">Android</a></li>
|
||
<li id="menu-item-66" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-66"><a title="iOS" href="https://engineering.fb.com/category/ios/" class="nav-link">iOS</a></li>
|
||
<li id="menu-item-67" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-67"><a title="Web" href="https://engineering.fb.com/category/web/" class="nav-link">Web</a></li>
|
||
</ul>
|
||
</li>
|
||
<li id="menu-item-2682" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children nav-item menu-item-2682 dropdown"><a title="Infrastructure Systems" href="#" data-toggle="dropdown" class="nav-link dropdown-toggle">Infrastructure Systems <span class="caret"></span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 129 129" enable-background="new 0 0 129 129" width="12px" height="15px">
|
||
<polyline points="40 50 80 90 120 50" stroke="#adb1b8" stroke-width="10" stroke-linecap="butt" fill="none" stroke-linejoin="miter"/>
|
||
</svg></a>
|
||
<ul class=" dropdown-menu" role="menu">
|
||
<li id="menu-item-218" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-218"><a title="Core Infra" href="https://engineering.fb.com/category/core-infra/" class="nav-link">Core Infra</a></li>
|
||
<li id="menu-item-219" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-219"><a title="Data Infrastructure" href="https://engineering.fb.com/category/data-infrastructure/" class="nav-link">Data Infrastructure</a></li>
|
||
<li id="menu-item-220" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-220"><a title="DevInfra" href="https://engineering.fb.com/category/developer-tools/" class="nav-link">DevInfra</a></li>
|
||
<li id="menu-item-226" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-226"><a title="Production Engineering" href="https://engineering.fb.com/category/production-engineering/" class="nav-link">Production Engineering</a></li>
|
||
<li id="menu-item-227" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-227"><a title="Security & Privacy" href="https://engineering.fb.com/category/security/" class="nav-link">Security & Privacy</a></li>
|
||
<li id="menu-item-18607" class="menu-item menu-item-type-custom menu-item-object-custom nav-item menu-item-18607"><a title="Research Publications" href="https://research.facebook.com/publications/research-areas/systems-infrastructure/" class="nav-link">Research Publications</a></li>
|
||
</ul>
|
||
</li>
|
||
<li id="menu-item-2683" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children nav-item menu-item-2683 dropdown"><a title="Physical Infrastructure" href="#" data-toggle="dropdown" class="nav-link dropdown-toggle">Physical Infrastructure <span class="caret"></span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 129 129" enable-background="new 0 0 129 129" width="12px" height="15px">
|
||
<polyline points="40 50 80 90 120 50" stroke="#adb1b8" stroke-width="10" stroke-linecap="butt" fill="none" stroke-linejoin="miter"/>
|
||
</svg></a>
|
||
<ul class=" dropdown-menu" role="menu">
|
||
<li id="menu-item-215" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-215"><a title="Connectivity" href="https://engineering.fb.com/category/connectivity/" class="nav-link">Connectivity</a></li>
|
||
<li id="menu-item-216" class="menu-item menu-item-type-taxonomy menu-item-object-category current-post-ancestor current-menu-parent current-post-parent nav-item menu-item-216"><a title="Data Center Engineering" href="https://engineering.fb.com/category/data-center-engineering/" class="nav-link">Data Center Engineering</a></li>
|
||
<li id="menu-item-217" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-217"><a title="Networking & Traffic" href="https://engineering.fb.com/category/networking-traffic/" class="nav-link">Networking & Traffic</a></li>
|
||
<li id="menu-item-18608" class="menu-item menu-item-type-custom menu-item-object-custom nav-item menu-item-18608"><a title="Research Publications" href="https://research.facebook.com/publications/research-areas/networking-connectivity/" class="nav-link">Research Publications</a></li>
|
||
</ul>
|
||
</li>
|
||
<li id="menu-item-2684" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children nav-item menu-item-2684 dropdown"><a title="Video Engineering & AR/VR" href="#" data-toggle="dropdown" class="nav-link dropdown-toggle">Video Engineering & AR/VR <span class="caret"></span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 129 129" enable-background="new 0 0 129 129" width="12px" height="15px">
|
||
<polyline points="40 50 80 90 120 50" stroke="#adb1b8" stroke-width="10" stroke-linecap="butt" fill="none" stroke-linejoin="miter"/>
|
||
</svg></a>
|
||
<ul class=" dropdown-menu" role="menu">
|
||
<li id="menu-item-225" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-225"><a title="Video Engineering" href="https://engineering.fb.com/category/video-engineering/" class="nav-link">Video Engineering</a></li>
|
||
<li id="menu-item-223" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-223"><a title="Virtual Reality" href="https://engineering.fb.com/category/virtual-reality/" class="nav-link">Virtual Reality</a></li>
|
||
<li id="menu-item-13388" class="menu-item menu-item-type-custom menu-item-object-custom nav-item menu-item-13388"><a title="Research Publications" href="https://research.facebook.com/publications/research-areas/augmented-reality-virtual-reality/" class="nav-link">Research Publications</a></li>
|
||
</ul>
|
||
</li>
|
||
<li id="menu-item-2685" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children nav-item menu-item-2685 dropdown"><a title="Artificial Intelligence" href="#" data-toggle="dropdown" class="nav-link dropdown-toggle">Artificial Intelligence <span class="caret"></span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 129 129" enable-background="new 0 0 129 129" width="12px" height="15px">
|
||
<polyline points="40 50 80 90 120 50" stroke="#adb1b8" stroke-width="10" stroke-linecap="butt" fill="none" stroke-linejoin="miter"/>
|
||
</svg></a>
|
||
<ul class=" dropdown-menu" role="menu">
|
||
<li id="menu-item-222" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-222"><a title="ML Applications" href="https://engineering.fb.com/category/ml-applications/" class="nav-link">ML Applications</a></li>
|
||
<li id="menu-item-221" class="menu-item menu-item-type-taxonomy menu-item-object-category nav-item menu-item-221"><a title="AI Research" href="https://engineering.fb.com/category/ai-research/" class="nav-link">AI Research</a></li>
|
||
<li id="menu-item-13387" class="menu-item menu-item-type-custom menu-item-object-custom nav-item menu-item-13387"><a title="Research Publications" href="https://ai.facebook.com/results/?content_types%5B0%5D=publication" class="nav-link">Research Publications</a></li>
|
||
</ul>
|
||
</li>
|
||
<li id="menu-item-228" class="menu-item menu-item-type-custom menu-item-object-custom nav-item menu-item-228"><a title="Watch Videos" href="/videos" class="nav-link">Watch Videos</a></li>
|
||
</ul></div> </div><!-- .container -->
|
||
|
||
<div class="search-container collapse" id="searchbarDropdown">
|
||
<div class="searchbar-search">
|
||
<div class="searchbar-container">
|
||
|
||
<div class="navbar-mobile-search-margin"></div>
|
||
<input type="text" name="search" placeholder="Search" class="form-control-lg navbar-mobile-search" autofocus autocomplete="off">
|
||
<button class="searchbar-clear">
|
||
<span class="icon-bar"></span>
|
||
<span class="icon-bar"></span>
|
||
<span class="icon-bar"></span>
|
||
</button>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</nav><!-- .site-navigation -->
|
||
|
||
</div><!-- .wrapper-navbar end -->
|
||
|
||
<div class="wrapper" id="single-wrapper">
|
||
|
||
<div class="single-container row" id="content" tabindex="-1">
|
||
|
||
<!-- Do the left sidebar check. -->
|
||
|
||
|
||
|
||
<div class="content-area" id="primary">
|
||
<main class="site-main" id="main">
|
||
|
||
|
||
|
||
<article class="post-10312 post type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-10312">
|
||
|
||
<header class="entry-header">
|
||
<div class="entry-meta">
|
||
POSTED ON <span class="posted-on entry-date"><time class="published updated" datetime="2018-10-04">OCTOBER 4, 2018</time></span> TO <span class="cat-links"><a href="https://engineering.fb.com/category/data-center-engineering/" rel="category tag">Data Center Engineering</a>, <a href="https://engineering.fb.com/category/open-source/" rel="category tag">Open Source</a></span>
|
||
<h1 class="entry-title"><div>Open-sourcing StateService: Automating recovery of third-party services after a major outage</div></h1> </div><!-- .entry-meta -->
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
<figure id="post-feat-image-container">
|
||
<img width="2000" height="1125" src="https://engineering.fb.com/wp-content/uploads/2018/09/StateService-Logo1.png" class="wp-post-image" alt="Open-sourcing StateService: How Facebook recovers services after disasters" title="StateService Logo" /> </figure>
|
||
|
||
<div class="entry-authors-social">
|
||
<div class="entry-authors">
|
||
By <a href="https://engineering.fb.com/author/declan-ryan/" title="Posts by Declan Ryan" class="author url fn" rel="author">Declan Ryan</a> </div>
|
||
</div>
|
||
|
||
|
||
<div class="entry-content">
|
||
|
||
<p>At Facebook, our services are designed to recover automatically from a major outage, such as the loss of a data center due to a natural disaster. Most of our production services are built in-house and these all run in containers. The third-party services we use in our corporate infrastructure, however, run on virtual machines (VMs), which can be challenging to recover because their deployment procedures may include steps that require coordination across several VMs. Previously, we would have had to manually intervene in such third-party service deployments, increasing the time it took to recover from an outage. To automate these deployments and decrease our recovery time, we developed StateService.</p>
|
||
<p>State Service is a state machine as a service that directs the state of a VM through complex deployment processes. Here at Facebook, our corporate infrastructure teams use StateService to significantly reduce manual effort when deploying services. Today, we are open-sourcing <a href="https://github.com/facebookincubator/StateService">StateService</a> for use by engineering and ops teams.</p>
|
||
<p>Our system offers improvements over existing approaches. StateService is self-documenting — the individual states become part of configuration management (CM) software, such as a <a href="https://github.com/chef/chef">Chef</a> cookbook. By replaying the states that were previously applied to a VM (or a group of VMs), StateService returns services to their last-known state.</p>
|
||
<p>StateService works with CM software, and Chef in particular, to deploy services. We use a state machine, expressed in YAML, to describe the states that one or more VMs can enter and how and when each transitions to another state (as seen in the image below). Each state can represent one step or a sequence of steps — e.g., waiting for an event to occur during deployment or performing the same action on a subset of VMs.</p>
|
||
<p><img decoding="async" class="alignnone wp-image-10347 size-full" src="https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png" alt="Visual showing how StateService, Facebook's newly open-sourced state machine as a service, works" width="2000" height="898" srcset="https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png 2000w, https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png?resize=916,411 916w, https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png?resize=768,345 768w, https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png?resize=1024,460 1024w, https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png?resize=1536,690 1536w, https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png?resize=96,43 96w, https://engineering.fb.com/wp-content/uploads/2018/09/CodeBlog_StateService_2_V2.png?resize=192,86 192w" sizes="(max-width: 992px) 100vw, 62vw" /></p>
|
||
<p><i>StateService describes the states (1-4) that one or more VMs can enter. Actions that previously had to be performed manually (A, B, and C) can now be programmed to occur automatically in a sequence of state transitions and on specific VMs. Unlike configuration management software, which only ensures that these actions are performed, StateService ensures that A occurs before B and B occurs before C.</i></p>
|
||
<p>StateService exposes its state machine as a web service over HTTP, so Chef resources can ask, “Is this machine in State A now?” StateService responds to HTTP requests with 200 (“Yes”) or 406 (“No”) status codes; the response is interpreted as success (“Yes”) or failure (“No”) by Chef’s <code>execute</code> resource and determines whether the next step is allowed to proceed on the VM that made the request. The Chef resource then sends another request to StateService to cause a state transition or to increment a value associated with the current state. As an example, the code below uses Chef’s <code>only_if</code> guard clause to query StateService, where Chef will execute the command and update StateService with the machine’s new state only if StateService returns a “Yes.”</p>
|
||
<pre>change_command = './change.sh'
|
||
execute 'change_machine' do
|
||
cwd home_dir
|
||
command "#{change_command} && curl -K didChangeMachine.curl"
|
||
only_if 'curl -K canChangeMachine.curl', :cwd => home_dir
|
||
end</pre>
|
||
<p>These resources and the state machine become part of a Chef cookbook, producing a collection of states that can be replayed to recover from a disastrous event.</p>
|
||
<p>StateService is a time-saver for engineering and ops teams that want to automate complex deployment procedures. At Facebook, StateService reduces manual effort and allows us to recover third-party services rapidly after a major outage. In the future, we will explore how to integrate StateService with other CM software, such as Ansible and Puppet.</p>
|
||
<div class="sharedaddy sd-sharing-enabled"><div class="robots-nocontent sd-block sd-social sd-social-icon-text sd-sharing"><h3 class="sd-title">Share this:</h3><div class="sd-content"><ul><li class="share-facebook"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-facebook-10312"
|
||
class="share-facebook sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=facebook"
|
||
target="_blank"
|
||
aria-labelledby="sharing-facebook-10312"
|
||
>
|
||
<span id="sharing-facebook-10312" hidden>Share on Facebook (Opens in new window)</span>
|
||
<span>Facebook</span>
|
||
</a></li><li class="share-threads"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-threads-10312"
|
||
class="share-threads sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=threads"
|
||
target="_blank"
|
||
aria-labelledby="sharing-threads-10312"
|
||
>
|
||
<span id="sharing-threads-10312" hidden>Share on Threads (Opens in new window)</span>
|
||
<span>Threads</span>
|
||
</a></li><li class="share-jetpack-whatsapp"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-whatsapp-10312"
|
||
class="share-jetpack-whatsapp sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=jetpack-whatsapp"
|
||
target="_blank"
|
||
aria-labelledby="sharing-whatsapp-10312"
|
||
>
|
||
<span id="sharing-whatsapp-10312" hidden>Share on WhatsApp (Opens in new window)</span>
|
||
<span>WhatsApp</span>
|
||
</a></li><li class="share-linkedin"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-linkedin-10312"
|
||
class="share-linkedin sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=linkedin"
|
||
target="_blank"
|
||
aria-labelledby="sharing-linkedin-10312"
|
||
>
|
||
<span id="sharing-linkedin-10312" hidden>Share on LinkedIn (Opens in new window)</span>
|
||
<span>LinkedIn</span>
|
||
</a></li><li class="share-reddit"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-reddit-10312"
|
||
class="share-reddit sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=reddit"
|
||
target="_blank"
|
||
aria-labelledby="sharing-reddit-10312"
|
||
>
|
||
<span id="sharing-reddit-10312" hidden>Share on Reddit (Opens in new window)</span>
|
||
<span>Reddit</span>
|
||
</a></li><li class="share-x"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-x-10312"
|
||
class="share-x sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=x"
|
||
target="_blank"
|
||
aria-labelledby="sharing-x-10312"
|
||
>
|
||
<span id="sharing-x-10312" hidden>Share on X (Opens in new window)</span>
|
||
<span>X</span>
|
||
</a></li><li class="share-bluesky"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-bluesky-10312"
|
||
class="share-bluesky sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=bluesky"
|
||
target="_blank"
|
||
aria-labelledby="sharing-bluesky-10312"
|
||
>
|
||
<span id="sharing-bluesky-10312" hidden>Share on Bluesky (Opens in new window)</span>
|
||
<span>Bluesky</span>
|
||
</a></li><li class="share-mastodon"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-mastodon-10312"
|
||
class="share-mastodon sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=mastodon"
|
||
target="_blank"
|
||
aria-labelledby="sharing-mastodon-10312"
|
||
>
|
||
<span id="sharing-mastodon-10312" hidden>Share on Mastodon (Opens in new window)</span>
|
||
<span>Mastodon</span>
|
||
</a></li><li class="share-custom share-custom-hackernews"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-custom-10312"
|
||
class="share-custom share-custom-hackernews sd-button share-icon"
|
||
href="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=custom-1699562127"
|
||
target="_blank"
|
||
aria-labelledby="sharing-custom-10312"
|
||
>
|
||
<span id="sharing-custom-10312" hidden>Share on Hacker News (Opens in new window)</span>
|
||
<span style="background-image:url("https://news.ycombinator.com/y18.svg");">Hacker News</span>
|
||
</a></li><li class="share-email"><a rel="nofollow noopener noreferrer"
|
||
data-shared="sharing-email-10312"
|
||
class="share-email sd-button share-icon"
|
||
href="mailto:?subject=%5BShared%20Post%5D%20Open-sourcing%20StateService%3A%20Automating%20recovery%20of%20third-party%20services%20after%20a%20major%20outage&body=https%3A%2F%2Fengineering.fb.com%2F2018%2F10%2F04%2Fopen-source%2Fstateservice%2F&share=email"
|
||
target="_blank"
|
||
aria-labelledby="sharing-email-10312"
|
||
data-email-share-error-title="Do you have email set up?" data-email-share-error-text="If you're having problems sharing via email, you might not have email set up for your browser. You may need to create a new email yourself." data-email-share-nonce="b1ca554cb9" data-email-share-track-url="https://engineering.fb.com/2018/10/04/open-source/stateservice/?share=email">
|
||
<span id="sharing-email-10312" hidden>Email a link to a friend (Opens in new window)</span>
|
||
<span>Email</span>
|
||
</a></li><li class="share-end"></li></ul></div></div></div>
|
||
|
||
</div><!-- .entry-content -->
|
||
|
||
|
||
</article><!-- #post-## -->
|
||
|
||
<footer class="entry-footer">
|
||
|
||
|
||
</footer><!-- .entry-footer -->
|
||
|
||
<div class="fb-like"
|
||
data-href="https://engineering.fb.com/2018/10/04/open-source/stateservice/"
|
||
data-width=""
|
||
data-layout="standard"
|
||
data-action="like"
|
||
data-size="small"
|
||
data-share="true">
|
||
</div>
|
||
|
||
|
||
<div class="related-articles">
|
||
<div class="related-articles__header">
|
||
<h3 class="related-articles__header__headline">Read More in Open Source</h3>
|
||
<a
|
||
aria-label="View all articles in this Open Source"
|
||
class="related-articles__header__link"
|
||
href="https://engineering.fb.com/category/open-source/"
|
||
>
|
||
View All </a>
|
||
</div>
|
||
|
||
<div class="article-grids related-articles__grid">
|
||
<div class="row">
|
||
<div class="article-grid col-12 col-md-4">
|
||
|
||
<article class="post post-10312 type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-24399">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2026/08/MetaRoCE-HERO-final.png?w=580&h=326&crop=1" class="attachment-thumbnail size-thumbnail" alt="" />
|
||
<header class="entry-header">
|
||
<div class="entry-header__top">
|
||
<span class="posted-on">
|
||
<time class="entry-date published" datetime="2026-08-24T11:02:29-07:00">
|
||
AUG 24, 2026 </time>
|
||
</span>
|
||
</div>
|
||
|
||
<div class="entry-title">
|
||
<div>
|
||
<a href="https://engineering.fb.com/2026/08/24/networking-traffic/metaroce-rdma-transport-ai-ethernet/" rel="bookmark" aria-label="Read More about MetaRoCE: A New RDMA Transport Built for AI-Scale Ethernet">
|
||
MetaRoCE: A New RDMA Transport Built for AI-Scale Ethernet </a>
|
||
</div>
|
||
</div>
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
</article><!-- #post-## -->
|
||
</div><!-- /.article-grid -->
|
||
<div class="article-grid col-12 col-md-4">
|
||
|
||
<article class="post post-10312 type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-24128">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2026/06/10-Years-Meta-Python-HERO-large.png?w=580&h=326&crop=1" class="attachment-thumbnail size-thumbnail" alt="" loading="lazy" />
|
||
<header class="entry-header">
|
||
<div class="entry-header__top">
|
||
<span class="posted-on">
|
||
<time class="entry-date published" datetime="2026-06-30T09:00:46-07:00">
|
||
JUN 30, 2026 </time>
|
||
</span>
|
||
</div>
|
||
|
||
<div class="entry-title">
|
||
<div>
|
||
<a href="https://engineering.fb.com/2026/06/30/open-source/10-years-of-metas-commitment-to-python/" rel="bookmark" aria-label="Read More about 10 Years of Meta’s Commitment to Python">
|
||
10 Years of Meta’s Commitment to Python </a>
|
||
</div>
|
||
</div>
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
</article><!-- #post-## -->
|
||
</div><!-- /.article-grid -->
|
||
<div class="article-grid col-12 col-md-4">
|
||
|
||
<article class="post post-10312 type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-23856">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2026/04/Escaping-the-Fork-Hero-2.png?w=580&h=326&crop=1" class="attachment-thumbnail size-thumbnail" alt="" loading="lazy" title="Escaping the Fork - Hero 2" />
|
||
<header class="entry-header">
|
||
<div class="entry-header__top">
|
||
<span class="posted-on">
|
||
<time class="entry-date published" datetime="2026-04-09T09:00:34-07:00">
|
||
APR 9, 2026 </time>
|
||
</span>
|
||
</div>
|
||
|
||
<div class="entry-title">
|
||
<div>
|
||
<a href="https://engineering.fb.com/2026/04/09/developer-tools/escaping-the-fork-how-meta-modernized-webrtc-across-50-use-cases/" rel="bookmark" aria-label="Read More about Escaping the Fork: How Meta Modernized WebRTC Across 50+ Use Cases">
|
||
Escaping the Fork: How Meta Modernized WebRTC Across 50+ Use Cases </a>
|
||
</div>
|
||
</div>
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
</article><!-- #post-## -->
|
||
</div><!-- /.article-grid -->
|
||
<div class="article-grid col-12 col-md-4">
|
||
|
||
<article class="post post-10312 type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-23769">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2026/03/Meta-AI-for-American-Concrete-HERO.jpg?w=580&h=326&crop=1" class="attachment-thumbnail size-thumbnail" alt="" loading="lazy" />
|
||
<header class="entry-header">
|
||
<div class="entry-header__top">
|
||
<span class="posted-on">
|
||
<time class="entry-date published" datetime="2026-03-30T09:00:34-07:00">
|
||
MAR 30, 2026 </time>
|
||
</span>
|
||
</div>
|
||
|
||
<div class="entry-title">
|
||
<div>
|
||
<a href="https://engineering.fb.com/2026/03/30/data-center-engineering/ai-for-american-produced-cement-and-concrete/" rel="bookmark" aria-label="Read More about AI for American-Produced Cement and Concrete">
|
||
AI for American-Produced Cement and Concrete </a>
|
||
</div>
|
||
</div>
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
</article><!-- #post-## -->
|
||
</div><!-- /.article-grid -->
|
||
<div class="article-grid col-12 col-md-4">
|
||
|
||
<article class="post post-10312 type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-23674">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2026/03/FFmpeg-at-Meta-hero_2.png?w=580&h=326&crop=1" class="attachment-thumbnail size-thumbnail" alt="" loading="lazy" />
|
||
<header class="entry-header">
|
||
<div class="entry-header__top">
|
||
<span class="posted-on">
|
||
<time class="entry-date published" datetime="2026-03-02T12:00:12-08:00">
|
||
MAR 2, 2026 </time>
|
||
</span>
|
||
</div>
|
||
|
||
<div class="entry-title">
|
||
<div>
|
||
<a href="https://engineering.fb.com/2026/03/02/video-engineering/ffmpeg-at-meta-media-processing-at-scale/" rel="bookmark" aria-label="Read More about FFmpeg at Meta: Media Processing at Scale">
|
||
FFmpeg at Meta: Media Processing at Scale </a>
|
||
</div>
|
||
</div>
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
</article><!-- #post-## -->
|
||
</div><!-- /.article-grid -->
|
||
<div class="article-grid col-12 col-md-4">
|
||
|
||
<article class="post post-10312 type-post status-publish format-standard has-post-thumbnail hentry category-data-center-engineering category-open-source fb_content_type-article" id="post-23682">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2026/02/jemalloc-at-Meta-Hero.png?w=580&h=326&crop=1" class="attachment-thumbnail size-thumbnail" alt="" loading="lazy" />
|
||
<header class="entry-header">
|
||
<div class="entry-header__top">
|
||
<span class="posted-on">
|
||
<time class="entry-date published" datetime="2026-03-02T09:00:04-08:00">
|
||
MAR 2, 2026 </time>
|
||
</span>
|
||
</div>
|
||
|
||
<div class="entry-title">
|
||
<div>
|
||
<a href="https://engineering.fb.com/2026/03/02/data-infrastructure/investing-in-infrastructure-metas-renewed-commitment-to-jemalloc/" rel="bookmark" aria-label="Read More about Investing in Infrastructure: Meta’s Renewed Commitment to jemalloc">
|
||
Investing in Infrastructure: Meta’s Renewed Commitment to jemalloc </a>
|
||
</div>
|
||
</div>
|
||
|
||
</header><!-- .entry-header -->
|
||
|
||
</article><!-- #post-## -->
|
||
</div><!-- /.article-grid -->
|
||
</div><!-- /.row -->
|
||
</div><!--/.article-grids -->
|
||
|
||
</div><!-- /.related-articles -->
|
||
|
||
|
||
<!-- include the carousel nav here. -->
|
||
|
||
|
||
|
||
|
||
</main><!-- #main -->
|
||
|
||
</div><!-- #primary -->
|
||
|
||
<!-- Do the right sidebar check. -->
|
||
|
||
|
||
|
||
|
||
<div class="col-md-4 widget-area" id="right-sidebar" role="complementary">
|
||
<aside id="fb_related_post_widget-4" class="widget widget_fb_related_post_widget"><h3 class="widget-title">Related Posts</h3><hr>
|
||
<div class="aside-related-projects"><div class="article-grid-redesign">
|
||
<article class="post-9755 post type-post status-publish has-post-thumbnail hentry" id="post-9755">
|
||
<a href="https://engineering.fb.com/2018/09/04/data-infrastructure/research-in-brief-building-switch-software-at-scale-and-in-the-open/" rel="bookmark" aria-label="Read More about FBOSS: Building switch software at scale and in the open">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2018/10/RIBpurple.png?w=580&h=326&crop=1" class="wp-post-image" alt="" srcset="https://engineering.fb.com/wp-content/uploads/2018/10/RIBpurple.png?w=580&h=326&crop=1 580w, https://engineering.fb.com/wp-content/uploads/2018/10/RIBpurple.png?w=580&h=326&crop=1 326w" sizes="(max-width: 580px) 100vw, 580px" loading="lazy">
|
||
<header class="entry-header">
|
||
<span class="posted-on"><time class="entry-date published" datetime="Sep 04, 2018">Sep 04, 2018</time></span>
|
||
<h4 class="entry-title">FBOSS: Building switch software at scale and in the open</h4>
|
||
</header><!-- .entry-header -->
|
||
</a>
|
||
</article><!-- #post-## -->
|
||
</div><div class="article-grid-redesign">
|
||
<article class="post-9630 post type-post status-publish has-post-thumbnail hentry" id="post-9630">
|
||
<a href="https://engineering.fb.com/2018/07/19/data-infrastructure/location-aware-distribution-configuring-servers-at-scale/" rel="bookmark" aria-label="Read More about Location-Aware Distribution: Configuring servers at scale">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2018/07/datacenter_LAD-1.png?w=580&h=326&crop=1" class="wp-post-image" alt="" srcset="https://engineering.fb.com/wp-content/uploads/2018/07/datacenter_LAD-1.png?w=580&h=326&crop=1 580w, https://engineering.fb.com/wp-content/uploads/2018/07/datacenter_LAD-1.png?w=580&h=326&crop=1 326w" sizes="(max-width: 580px) 100vw, 580px" loading="lazy">
|
||
<header class="entry-header">
|
||
<span class="posted-on"><time class="entry-date published" datetime="Jul 19, 2018">Jul 19, 2018</time></span>
|
||
<h4 class="entry-title">Location-Aware Distribution: Configuring servers at scale</h4>
|
||
</header><!-- .entry-header -->
|
||
</a>
|
||
</article><!-- #post-## -->
|
||
</div><div class="article-grid-redesign">
|
||
<article class="post-10131 post type-post status-publish has-post-thumbnail hentry" id="post-10131">
|
||
<a href="https://engineering.fb.com/2018/09/13/developer-tools/finding-and-fixing-software-bugs-automatically-with-sapfix-and-sapienz/" rel="bookmark" aria-label="Read More about Finding and fixing software bugs automatically with SapFix and Sapienz">
|
||
<img width="580" height="326" src="https://engineering.fb.com/wp-content/uploads/2018/09/WorkflowGIF_1424_801_2.gif?w=580&h=326&crop=1" class="wp-post-image" alt="" srcset="https://engineering.fb.com/wp-content/uploads/2018/09/WorkflowGIF_1424_801_2.gif?w=580&h=326&crop=1 580w, https://engineering.fb.com/wp-content/uploads/2018/09/WorkflowGIF_1424_801_2.gif?w=580&h=326&crop=1 326w" sizes="(max-width: 580px) 100vw, 580px" loading="lazy">
|
||
<header class="entry-header">
|
||
<span class="posted-on"><time class="entry-date published" datetime="Sep 13, 2018">Sep 13, 2018</time></span>
|
||
<h4 class="entry-title">Finding and fixing software bugs automatically with SapFix and Sapienz</h4>
|
||
</header><!-- .entry-header -->
|
||
</a>
|
||
</article><!-- #post-## -->
|
||
</div></div></aside><aside id="wpb_widget-3" class="widget widget_wpb_widget"><h3 class="widget-title">Related Positions</h3><hr><ul class="available-positions-list"><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/2278965319592702/>
|
||
<div class="job-description">
|
||
Data Governance Lead, Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
BELLEVUE, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/2278965319592702/>
|
||
<div class="job-description">
|
||
Data Governance Lead, Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
MENLO PARK, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/2278965319592702/>
|
||
<div class="job-description">
|
||
Data Governance Lead, Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
SEATTLE, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/1458825126087114/>
|
||
<div class="job-description">
|
||
Generator Engineer, Data Center Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
RESTON, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/1458825126087114/>
|
||
<div class="job-description">
|
||
Generator Engineer, Data Center Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
MENLO PARK, US
|
||
</div>
|
||
</a>
|
||
</li> </ul>
|
||
<a href="https://www.metacareers.com">
|
||
<div class="btn available-positions-btn">
|
||
See All Jobs </div>
|
||
</a>
|
||
</aside>
|
||
</div><!-- #secondary -->
|
||
|
||
|
||
|
||
<!-- <php get_template_part('content-single-side-bar'); ?> -->
|
||
|
||
<!-- Do the right sidebar check. -->
|
||
|
||
</div><!-- Container end -->
|
||
|
||
</div><!-- Wrapper end -->
|
||
|
||
</div>
|
||
|
||
<!-- ******************* The Footer Full-width Widget Area ******************* -->
|
||
|
||
<div class="wrapper wrapper-community-outer">
|
||
<div class="wrapper-community">
|
||
|
||
<div class="community" tabindex="-1">
|
||
|
||
<div class="row">
|
||
<!-- community section is generated through WordPress widget -->
|
||
<div id="wpb_widget-2" class="footer-widget widget_wpb_widget widget-count-3 col-md-4"><h3 class="widget-title">Available Positions</h3><hr><ul class="available-positions-list"><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/2278965319592702/>
|
||
<div class="job-description">
|
||
Data Governance Lead, Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
BELLEVUE, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/2278965319592702/>
|
||
<div class="job-description">
|
||
Data Governance Lead, Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
MENLO PARK, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/2278965319592702/>
|
||
<div class="job-description">
|
||
Data Governance Lead, Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
SEATTLE, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/1458825126087114/>
|
||
<div class="job-description">
|
||
Generator Engineer, Data Center Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
RESTON, US
|
||
</div>
|
||
</a>
|
||
</li><li class="available-positions-item">
|
||
<a href=https://www.metacareers.com/jobs/1458825126087114/>
|
||
<div class="job-description">
|
||
Generator Engineer, Data Center Infrastructure
|
||
</div>
|
||
<div class="job-location">
|
||
MENLO PARK, US
|
||
</div>
|
||
</a>
|
||
</li> </ul>
|
||
<a href="https://www.metacareers.com">
|
||
<div class="btn available-positions-btn">
|
||
See All Jobs </div>
|
||
</a>
|
||
</div><!-- .footer-widget --><div id="custom_html-2" class="widget_text footer-widget widget_custom_html widget-count-3 col-md-4"><h3 class="widget-title">Technology at Meta</h3><div class="textwidget custom-html-widget"><ul class="stay-connected-lists">
|
||
<li class="stay-connected-item">
|
||
<img class="footer-fb-engineering stay-connected-item-left" src="/wp-content/themes/code-fb-com/img/meta_logo.png" alt="footer-fb-engineering" loading="lazy" width="70" height="70">
|
||
<div class="stay-connected-item-right">
|
||
<div class="stay-connected-label">
|
||
Engineering at Meta - X
|
||
</div>
|
||
<a onclick='return twitterFollow("Meta_Engineers")'>
|
||
<button class="btn stay-connected-btn">
|
||
Follow
|
||
</button>
|
||
</a>
|
||
</div>
|
||
</li>
|
||
<li class="stay-connected-item">
|
||
<img class="footer-fb-engineering stay-connected-item-left" src="/wp-content/themes/code-fb-com/img/meta_logo.png" alt="footer-AI" loading="lazy" width="70" height="70">
|
||
<div class="stay-connected-item-right">
|
||
<div class="stay-connected-label">
|
||
AI at Meta
|
||
</div>
|
||
<a href="https://ai.meta.com/blog/">
|
||
<button class="btn stay-connected-btn">
|
||
Read
|
||
</button>
|
||
</a>
|
||
</div>
|
||
</li>
|
||
<li class="stay-connected-item">
|
||
<img class="footer-fb-engineering stay-connected-item-left" src="/wp-content/themes/code-fb-com/img/meta_logo.png" alt="footer-developers" loading="lazy" width="70" height="70">
|
||
<div class="stay-connected-item-right">
|
||
<div class="stay-connected-label">
|
||
Meta Quest Blog
|
||
</div>
|
||
<a href="https://www.meta.com/blog/quest/">
|
||
<button class="btn stay-connected-btn">
|
||
Read
|
||
</button>
|
||
</a>
|
||
</div>
|
||
</li>
|
||
|
||
<li class="stay-connected-item">
|
||
<img class="footer-fb-engineering stay-connected-item-left" src="/wp-content/themes/code-fb-com/img/meta_logo.png" alt="footer-developers" loading="lazy" width="70" height="70">
|
||
<div class="stay-connected-item-right">
|
||
<div class="stay-connected-label">
|
||
Meta for Developers
|
||
</div>
|
||
<a href="https://developers.facebook.com/">
|
||
<button class="btn stay-connected-btn">
|
||
Read
|
||
</button>
|
||
</a>
|
||
</div>
|
||
</li>
|
||
<li class="stay-connected-item">
|
||
<img class="footer-fb-engineering stay-connected-item-left" src="/wp-content/themes/code-fb-com/img/meta_logo.png" alt="footer-bug-bounty" loading="lazy" width="70" height="70">
|
||
<div class="stay-connected-item-right">
|
||
<div class="stay-connected-label">
|
||
Meta Bug Bounty
|
||
</div>
|
||
<a href="https://bugbounty.meta.com/">
|
||
<button class="btn stay-connected-btn">
|
||
Learn more
|
||
</button>
|
||
</a>
|
||
</div>
|
||
</li>
|
||
|
||
<li class="stay-connected-item">
|
||
<img class="stay-connected-item-left" src="/wp-content/themes/code-fb-com/img/rss.png" alt="footer-rss" loading="lazy" width="70" height="70">
|
||
<div class="stay-connected-item-right">
|
||
<div class="stay-connected-label">
|
||
RSS
|
||
</div>
|
||
<a href="https://code.facebook.com/posts/rss/">
|
||
<button class="btn stay-connected-btn">
|
||
Subscribe
|
||
</button>
|
||
</a>
|
||
</div>
|
||
</li>
|
||
</ul>
|
||
</div></div><!-- .footer-widget --><div id="custom_html-3" class="widget_text footer-widget widget_custom_html widget-count-3 col-md-4"><h3 class="widget-title">Open Source</h3><div class="textwidget custom-html-widget"><p class="opensource-desc">
|
||
Meta believes in building community through open source technology. Explore our latest projects in Artificial Intelligence, Data Infrastructure, Development Tools, Front End, Languages, Platforms, Security, Virtual Reality, and more.
|
||
</p>
|
||
<ul class="opensource-cats">
|
||
<li class="opensource-cat">
|
||
<img src="/wp-content/themes/code-fb-com/img/android.png" alt="android" loading="lazy" width="50" height="59">
|
||
<div class="opensource-cap">
|
||
ANDROID
|
||
</div>
|
||
</li>
|
||
<li class="opensource-cat">
|
||
<img src="/wp-content/themes/code-fb-com/img/ios.png" alt="ios" loading="lazy" width="48" height="58">
|
||
<div class="opensource-cap">
|
||
iOS
|
||
</div>
|
||
</li>
|
||
<li class="opensource-cat">
|
||
<img src="/wp-content/themes/code-fb-com/img/web.png" alt="web" loading="lazy" width="55" height="49">
|
||
<div class="opensource-cap">
|
||
WEB
|
||
</div>
|
||
</li>
|
||
<li class="opensource-cat">
|
||
<img src="/wp-content/themes/code-fb-com/img/backend.png" alt="backend" loading="lazy" width="56" height="51">
|
||
<div class="opensource-cap">
|
||
BACKEND
|
||
</div>
|
||
</li>
|
||
<li class="opensource-cat">
|
||
<img src="/wp-content/themes/code-fb-com/img/hardware.png" alt="hardware" loading="lazy" width="55" height="44">
|
||
<div class="opensource-cap">
|
||
HARDWARE
|
||
</div>
|
||
</li>
|
||
</ul>
|
||
|
||
<button class="btn opensource-btn" onclick="window.location.href='https://opensource.fb.com/'">
|
||
Learn More
|
||
</button>
|
||
|
||
</div></div><!-- .footer-widget -->
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
</div><!-- #wrapper-footer-full -->
|
||
|
||
|
||
<div class="wrapper-footer" id="wrapper-footer">
|
||
<div class="inner-container">
|
||
<div class="footer">
|
||
<div class="row">
|
||
<div class="col-md-12">
|
||
<footer class="meta-footer" id="meta-footer">
|
||
<div class="site-info row justify-content-between">
|
||
<div class="col-md-5 meta-logo-container">
|
||
<a href="https://about.facebook.com/">
|
||
<img src="https://engineering.fb.com/wp-content/themes/code-fb-com/img/meta_logo_full.svg" width="89" height="18" alt="Meta" />
|
||
</a>
|
||
<div id="text-2" class="widget widget_text"> <div class="textwidget"><p>Engineering at Meta is a technical news resource for engineers interested in how we solve large-scale technical challenges at Meta.</p>
|
||
</div>
|
||
</div> </div>
|
||
<div class="col-md-6 footer-meta-links-container">
|
||
<ul class="meta-footer-links">
|
||
<li class="footer-link"><a href="https://engineering.fb.com">Home</a></li><li class="footer-link"><a href="https://about.meta.com/">Company Info</a></li><li class="footer-link"><a href="https://www.metacareers.com/?ref=engineering.fb.com">Careers</a></li> </ul>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="footer">
|
||
<div class="row">
|
||
|
||
<div class="col-md-12">
|
||
|
||
<footer class="site-footer" id="colophon">
|
||
<div class="inner-container">
|
||
<div class="site-info row justify-content-between">
|
||
|
||
<div class="col-md-4 copyright-container">
|
||
<div class="copyright"> © 2026 Meta</div>
|
||
</div>
|
||
|
||
<!-- static footer -->
|
||
<div class="col-md-7 footer-links-container">
|
||
<ul class="footer-links">
|
||
<li class="footer-link"><a href="https://www.facebook.com/policies">Terms</a></li><li class="footer-link"><a href="https://www.facebook.com/privacy/policy">Privacy</a></li><li class="footer-link"><a href="/privacy">Cookies</a></li><li class="footer-link"><a href="https://www.facebook.com/help">Help</a></li> </ul>
|
||
</div>
|
||
</div>
|
||
</div><!-- .site-info -->
|
||
|
||
</footer><!-- #colophon -->
|
||
|
||
</div><!--col end -->
|
||
|
||
</div><!-- row end -->
|
||
|
||
</div><!-- //.inner-container -->
|
||
</div><!-- wrapper end -->
|
||
|
||
</div><!-- #page we need this extra closing tag here -->
|
||
|
||
<script type="speculationrules">
|
||
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"/*"},{"not":{"href_matches":["/wp-*.php","/wp-admin/*","/wp-content/uploads/*","/wp-content/*","/wp-content/plugins/*","/wp-content/themes/code-fb-com/*","/wp-content/themes/understrap/*","/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
|
||
</script>
|
||
<div class="gdprconsent-container" id="GDPRConsentBar">
|
||
<div class="gdprconsent-wrapper">
|
||
<div class="gdprconsent-content">
|
||
<p>To help personalize content, tailor and measure ads and provide a safer experience, we use cookies. By clicking or navigating the site, you agree to allow our collection of information on and off Facebook through cookies. Learn more, including about available controls: <a href="/privacy">Cookie Policy</a></p>
|
||
<div class="gdprconsent-button">
|
||
<button type="button" data-gdpr-accept>Accept</button>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
<!-- Twitter universal website tag code -->
|
||
<script>
|
||
if (window.gdprSafeTrack) {
|
||
window.gdprSafeTrack(function() {
|
||
!function(e,t,n,s,u,a){e.twq||(s=e.twq=function(){s.exe?s.exe.apply(s,arguments):s.queue.push(arguments);
|
||
},s.version='1.1',s.queue=[],u=t.createElement(n),u.async=!0,u.src='//static.ads-twitter.com/uwt.js',
|
||
a=t.getElementsByTagName(n)[0],a.parentNode.insertBefore(u,a))}(window,document,'script');
|
||
// Insert Twitter Pixel ID and Standard Event data below
|
||
twq('init','o31u0');
|
||
twq('track','PageView');
|
||
});
|
||
}
|
||
</script>
|
||
<!-- End Twitter universal website tag code -->
|
||
|
||
|
||
<script type="text/javascript">
|
||
window.WPCOM_sharing_counts = {"https://engineering.fb.com/2018/10/04/open-source/stateservice/":10312};
|
||
</script>
|
||
|
||
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KZRLGZ8" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
|
||
|
||
<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=660742068067366&ev=PageView&noscript=1"/></noscript>
|
||
<script id="child-understrap-scripts-js-extra">
|
||
var loadmore_params = {"restfulURL":"https://engineering.fb.com/wp-json/fb/v1/loadmore","searchText":"","posts":"{\"page\":0,\"year\":2018,\"monthnum\":10,\"day\":4,\"name\":\"stateservice\",\"category_name\":\"open-source\",\"error\":\"\",\"m\":\"\",\"p\":0,\"post_parent\":\"\",\"subpost\":\"\",\"subpost_id\":\"\",\"attachment\":\"\",\"attachment_id\":0,\"pagename\":\"\",\"page_id\":0,\"second\":\"\",\"minute\":\"\",\"hour\":\"\",\"w\":0,\"tag\":\"\",\"cat\":\"\",\"tag_id\":\"\",\"author\":\"\",\"author_name\":\"\",\"feed\":\"\",\"tb\":\"\",\"paged\":0,\"meta_key\":\"\",\"meta_value\":\"\",\"preview\":\"\",\"s\":\"\",\"sentence\":\"\",\"title\":\"\",\"fields\":\"all\",\"menu_order\":\"\",\"embed\":\"\",\"category__in\":[],\"category__not_in\":[],\"category__and\":[],\"post__in\":[],\"post__not_in\":[],\"post_name__in\":[],\"tag__in\":[],\"tag__not_in\":[],\"tag__and\":[],\"tag_slug__in\":[],\"tag_slug__and\":[],\"post_parent__in\":[],\"post_parent__not_in\":[],\"author__in\":[],\"author__not_in\":[],\"search_columns\":[],\"ignore_sticky_posts\":false,\"suppress_filters\":false,\"cache_results\":true,\"update_post_term_cache\":true,\"update_menu_item_cache\":false,\"lazy_load_term_meta\":true,\"update_post_meta_cache\":true,\"post_type\":\"\",\"posts_per_page\":12,\"nopaging\":false,\"comments_per_page\":\"50\",\"no_found_rows\":false,\"order\":\"DESC\"}","current_page":"1","max_page":"0","post_type":"post"};
|
||
var search_params = {"ajaxurl":"https://engineering.fb.com/wp-admin/admin-ajax.php","posts":"{\"page\":0,\"year\":2018,\"monthnum\":10,\"day\":4,\"name\":\"stateservice\",\"category_name\":\"open-source\",\"error\":\"\",\"m\":\"\",\"p\":0,\"post_parent\":\"\",\"subpost\":\"\",\"subpost_id\":\"\",\"attachment\":\"\",\"attachment_id\":0,\"pagename\":\"\",\"page_id\":0,\"second\":\"\",\"minute\":\"\",\"hour\":\"\",\"w\":0,\"tag\":\"\",\"cat\":\"\",\"tag_id\":\"\",\"author\":\"\",\"author_name\":\"\",\"feed\":\"\",\"tb\":\"\",\"paged\":0,\"meta_key\":\"\",\"meta_value\":\"\",\"preview\":\"\",\"s\":\"\",\"sentence\":\"\",\"title\":\"\",\"fields\":\"all\",\"menu_order\":\"\",\"embed\":\"\",\"category__in\":[],\"category__not_in\":[],\"category__and\":[],\"post__in\":[],\"post__not_in\":[],\"post_name__in\":[],\"tag__in\":[],\"tag__not_in\":[],\"tag__and\":[],\"tag_slug__in\":[],\"tag_slug__and\":[],\"post_parent__in\":[],\"post_parent__not_in\":[],\"author__in\":[],\"author__not_in\":[],\"search_columns\":[],\"ignore_sticky_posts\":false,\"suppress_filters\":false,\"cache_results\":true,\"update_post_term_cache\":true,\"update_menu_item_cache\":false,\"lazy_load_term_meta\":true,\"update_post_meta_cache\":true,\"post_type\":\"\",\"posts_per_page\":12,\"nopaging\":false,\"comments_per_page\":\"50\",\"no_found_rows\":false,\"order\":\"DESC\"}","current_page":"1","max_page":"0","article_filter":"20b1c3dc67"};
|
||
var more_articles = {"next_article":{"label":"Next","permalink":"https://engineering.fb.com/2018/10/08/core-infra/akkio/","title":"Managing data store locality at scale with Akkio","thumbnail":["https://engineering.fb.com/wp-content/uploads/2018/09/Akkioarch.png?w=580&h=326&crop=1",580,326,true]},"prev_article":{"label":"Prev","permalink":"https://engineering.fb.com/2018/10/02/ml-applications/under-the-hood-facebook-marketplace-powered-by-artificial-intelligence/","title":"Under the hood: Facebook Marketplace powered by artificial intelligence","thumbnail":["https://engineering.fb.com/wp-content/uploads/2018/09/marketplaceW.png?w=580&h=326&crop=1",580,326,true]}};
|
||
//# sourceURL=child-understrap-scripts-js-extra
|
||
</script>
|
||
<script type="text/javascript" src="https://engineering.fb.com/_static/??/wp-content/themes/code-fb-com/dist/js/child-theme.min.js,/wp-content/themes/code-fb-com/js/prism.js?m=1783017802j" ></script><script id="sharing-js-js-extra">
|
||
var sharing_js_options = {"lang":"en","counts":"1","is_stats_active":""};
|
||
//# sourceURL=sharing-js-js-extra
|
||
</script>
|
||
<script id="sharing-js-js" src="https://engineering.fb.com/wp-content/mu-plugins/jetpack-16.1/_inc/build/sharedaddy/sharing.min.js?ver=16.1.3"></script>
|
||
<script id="sharing-js-js-after">
|
||
var windowOpen;
|
||
( function () {
|
||
function matches( el, sel ) {
|
||
return !! (
|
||
el.matches && el.matches( sel ) ||
|
||
el.msMatchesSelector && el.msMatchesSelector( sel )
|
||
);
|
||
}
|
||
|
||
document.body.addEventListener( 'click', function ( event ) {
|
||
if ( ! event.target ) {
|
||
return;
|
||
}
|
||
|
||
var el;
|
||
if ( matches( event.target, 'a.share-facebook' ) ) {
|
||
el = event.target;
|
||
} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-facebook' ) ) {
|
||
el = event.target.parentNode;
|
||
}
|
||
|
||
if ( el ) {
|
||
event.preventDefault();
|
||
|
||
// If there's another sharing window open, close it.
|
||
if ( typeof windowOpen !== 'undefined' ) {
|
||
windowOpen.close();
|
||
}
|
||
windowOpen = window.open( el.getAttribute( 'href' ), 'wpcomfacebook', 'menubar=1,resizable=1,width=600,height=400' );
|
||
return false;
|
||
}
|
||
} );
|
||
} )();
|
||
var windowOpen;
|
||
( function () {
|
||
function matches( el, sel ) {
|
||
return !! (
|
||
el.matches && el.matches( sel ) ||
|
||
el.msMatchesSelector && el.msMatchesSelector( sel )
|
||
);
|
||
}
|
||
|
||
document.body.addEventListener( 'click', function ( event ) {
|
||
if ( ! event.target ) {
|
||
return;
|
||
}
|
||
|
||
var el;
|
||
if ( matches( event.target, 'a.share-threads' ) ) {
|
||
el = event.target;
|
||
} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-threads' ) ) {
|
||
el = event.target.parentNode;
|
||
}
|
||
|
||
if ( el ) {
|
||
event.preventDefault();
|
||
|
||
// If there's another sharing window open, close it.
|
||
if ( typeof windowOpen !== 'undefined' ) {
|
||
windowOpen.close();
|
||
}
|
||
windowOpen = window.open( el.getAttribute( 'href' ), 'wpcomthreads', 'menubar=1,resizable=1,width=600,height=400' );
|
||
return false;
|
||
}
|
||
} );
|
||
} )();
|
||
var windowOpen;
|
||
( function () {
|
||
function matches( el, sel ) {
|
||
return !! (
|
||
el.matches && el.matches( sel ) ||
|
||
el.msMatchesSelector && el.msMatchesSelector( sel )
|
||
);
|
||
}
|
||
|
||
document.body.addEventListener( 'click', function ( event ) {
|
||
if ( ! event.target ) {
|
||
return;
|
||
}
|
||
|
||
var el;
|
||
if ( matches( event.target, 'a.share-linkedin' ) ) {
|
||
el = event.target;
|
||
} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-linkedin' ) ) {
|
||
el = event.target.parentNode;
|
||
}
|
||
|
||
if ( el ) {
|
||
event.preventDefault();
|
||
|
||
// If there's another sharing window open, close it.
|
||
if ( typeof windowOpen !== 'undefined' ) {
|
||
windowOpen.close();
|
||
}
|
||
windowOpen = window.open( el.getAttribute( 'href' ), 'wpcomlinkedin', 'menubar=1,resizable=1,width=580,height=450' );
|
||
return false;
|
||
}
|
||
} );
|
||
} )();
|
||
var windowOpen;
|
||
( function () {
|
||
function matches( el, sel ) {
|
||
return !! (
|
||
el.matches && el.matches( sel ) ||
|
||
el.msMatchesSelector && el.msMatchesSelector( sel )
|
||
);
|
||
}
|
||
|
||
document.body.addEventListener( 'click', function ( event ) {
|
||
if ( ! event.target ) {
|
||
return;
|
||
}
|
||
|
||
var el;
|
||
if ( matches( event.target, 'a.share-x' ) ) {
|
||
el = event.target;
|
||
} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-x' ) ) {
|
||
el = event.target.parentNode;
|
||
}
|
||
|
||
if ( el ) {
|
||
event.preventDefault();
|
||
|
||
// If there's another sharing window open, close it.
|
||
if ( typeof windowOpen !== 'undefined' ) {
|
||
windowOpen.close();
|
||
}
|
||
windowOpen = window.open( el.getAttribute( 'href' ), 'wpcomx', 'menubar=1,resizable=1,width=600,height=350' );
|
||
return false;
|
||
}
|
||
} );
|
||
} )();
|
||
var windowOpen;
|
||
( function () {
|
||
function matches( el, sel ) {
|
||
return !! (
|
||
el.matches && el.matches( sel ) ||
|
||
el.msMatchesSelector && el.msMatchesSelector( sel )
|
||
);
|
||
}
|
||
|
||
document.body.addEventListener( 'click', function ( event ) {
|
||
if ( ! event.target ) {
|
||
return;
|
||
}
|
||
|
||
var el;
|
||
if ( matches( event.target, 'a.share-bluesky' ) ) {
|
||
el = event.target;
|
||
} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-bluesky' ) ) {
|
||
el = event.target.parentNode;
|
||
}
|
||
|
||
if ( el ) {
|
||
event.preventDefault();
|
||
|
||
// If there's another sharing window open, close it.
|
||
if ( typeof windowOpen !== 'undefined' ) {
|
||
windowOpen.close();
|
||
}
|
||
windowOpen = window.open( el.getAttribute( 'href' ), 'wpcombluesky', 'menubar=1,resizable=1,width=600,height=400' );
|
||
return false;
|
||
}
|
||
} );
|
||
} )();
|
||
var windowOpen;
|
||
( function () {
|
||
function matches( el, sel ) {
|
||
return !! (
|
||
el.matches && el.matches( sel ) ||
|
||
el.msMatchesSelector && el.msMatchesSelector( sel )
|
||
);
|
||
}
|
||
|
||
document.body.addEventListener( 'click', function ( event ) {
|
||
if ( ! event.target ) {
|
||
return;
|
||
}
|
||
|
||
var el;
|
||
if ( matches( event.target, 'a.share-mastodon' ) ) {
|
||
el = event.target;
|
||
} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-mastodon' ) ) {
|
||
el = event.target.parentNode;
|
||
}
|
||
|
||
if ( el ) {
|
||
event.preventDefault();
|
||
|
||
// If there's another sharing window open, close it.
|
||
if ( typeof windowOpen !== 'undefined' ) {
|
||
windowOpen.close();
|
||
}
|
||
windowOpen = window.open( el.getAttribute( 'href' ), 'wpcommastodon', 'menubar=1,resizable=1,width=460,height=400' );
|
||
return false;
|
||
}
|
||
} );
|
||
} )();
|
||
//# sourceURL=sharing-js-js-after
|
||
</script>
|
||
<script id="video-analytics-js-after">
|
||
if (window.gdprSafeTrack) {
|
||
window.gdprSafeTrack(function() {
|
||
let youtube = document.querySelectorAll('[src*="youtube-nocookie"]');
|
||
for (let i = 0; i < youtube.length; i++) {
|
||
youtube[i].src = youtube[i].src.replace('youtube-nocookie.com', 'youtube.com');
|
||
}
|
||
let vimeo = document.querySelectorAll('[src*="vimeo"]');
|
||
for (let i = 0; i < vimeo.length; i++) {
|
||
vimeo[i].src = vimeo[i].src.replace('&dnt=true', '');
|
||
}
|
||
});
|
||
}
|
||
//# sourceURL=video-analytics-js-after
|
||
</script>
|
||
<script id="wp-emoji-settings" type="application/json">
|
||
{"baseUrl":"https://s.w.org/images/core/emoji/17.0.2/72x72/","ext":".png","svgUrl":"https://s.w.org/images/core/emoji/17.0.2/svg/","svgExt":".svg","source":{"concatemoji":"https://engineering.fb.com/wp-includes/js/wp-emoji-release.min.js?ver=7.1"}}
|
||
</script>
|
||
<script type="module">
|
||
/*! This file is auto-generated */
|
||
var e="script#wp-emoji-settings",t=document.querySelector(e);if(!(t instanceof HTMLScriptElement))throw new Error("Element missing: "+e);const r=JSON.parse(t.text),s=(window._wpemojiSettings=r,"wpEmojiSettingsSupports"),o=["flag","emoji"];function i(e){try{var t={supportTests:e,timestamp:(new Date).valueOf()};sessionStorage.setItem(s,JSON.stringify(t))}catch(e){}}function c(e,t,n){e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(t,0,0);t=new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data);e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(n,0,0);const r=new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data);return t.every((e,t)=>e===r[t])}function p(e,t){e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(t,0,0);var n=e.getImageData(16,16,1,1);for(let e=0;e<n.data.length;e++)if(0!==n.data[e])return!1;return!0}function u(e,t,n,r){switch(t){case"flag":return n(e,"\ud83c\udff3\ufe0f\u200d\u26a7\ufe0f","\ud83c\udff3\ufe0f\u200b\u26a7\ufe0f")?!1:!n(e,"\ud83c\udde8\ud83c\uddf6","\ud83c\udde8\u200b\ud83c\uddf6")&&!n(e,"\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc65\udb40\udc6e\udb40\udc67\udb40\udc7f","\ud83c\udff4\u200b\udb40\udc67\u200b\udb40\udc62\u200b\udb40\udc65\u200b\udb40\udc6e\u200b\udb40\udc67\u200b\udb40\udc7f");case"emoji":return!r(e,"\ud83e\u1fac8")}return!1}function f(e,t,n,r){let a;const s=(a="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?new OffscreenCanvas(300,150):document.createElement("canvas")).getContext("2d",{willReadFrequently:!0}),o=(s.textBaseline="top",s.font="600 32px Arial",{});return e.forEach(e=>{o[e]=t(s,e,n,r)}),o}function a(e){var t=document.createElement("script");t.src=e,t.defer=!0,document.head.appendChild(t)}r.supports={everything:!0,everythingExceptFlag:!0},new Promise(t=>{let n=function(){try{var e=JSON.parse(sessionStorage.getItem(s));if("object"==typeof e&&"number"==typeof e.timestamp&&(new Date).valueOf()<e.timestamp+604800&&"object"==typeof e.supportTests)return e.supportTests}catch(e){}return null}();if(!n){if("undefined"!=typeof Worker&&"undefined"!=typeof OffscreenCanvas&&"undefined"!=typeof URL&&URL.createObjectURL&&"undefined"!=typeof Blob)try{var e="postMessage("+f.toString()+"("+[JSON.stringify(o),u.toString(),c.toString(),p.toString()].join(",")+"));",r=new Blob([e],{type:"text/javascript"});const a=new Worker(URL.createObjectURL(r),{name:"wpTestEmojiSupports"});return void(a.onmessage=e=>{i(n=e.data),a.terminate(),t(n)})}catch(e){}i(n=f(o,u,c,p))}t(n)}).then(e=>{for(const n in e)r.supports[n]=e[n],r.supports.everything=r.supports.everything&&r.supports[n],"flag"!==n&&(r.supports.everythingExceptFlag=r.supports.everythingExceptFlag&&r.supports[n]);var t;r.supports.everythingExceptFlag=r.supports.everythingExceptFlag&&!r.supports.flag,r.supports.everything||((t=r.source||{}).concatemoji?a(t.concatemoji):t.wpemoji&&t.twemoji&&(a(t.twemoji),a(t.wpemoji)))});
|
||
//# sourceURL=https://engineering.fb.com/wp-includes/js/wp-emoji-loader.min.js
|
||
</script>
|
||
|
||
</body>
|
||
|
||
</html>
|