{"id":269373,"date":"2021-06-08T18:42:55","date_gmt":"2021-06-08T15:42:55","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/heres-why-almost-all-of-the-internet-went-down-on-tuesday\/"},"modified":"2021-06-08T18:42:55","modified_gmt":"2021-06-08T15:42:55","slug":"heres-why-almost-all-of-the-internet-went-down-on-tuesday","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/heres-why-almost-all-of-the-internet-went-down-on-tuesday\/","title":{"rendered":"#Here\u2019s why almost all of the internet went down on Tuesday"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3b595a80f95\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3b595a80f95\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/heres-why-almost-all-of-the-internet-went-down-on-tuesday\/#What_happened_and_whats_a_CDN\" >What happened and what\u2019s a CDN?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/heres-why-almost-all-of-the-internet-went-down-on-tuesday\/#So_why_did_so_many_sites_fail\" >So, why did so many sites fail?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/buradabiliyorum.com\/en\/heres-why-almost-all-of-the-internet-went-down-on-tuesday\/#Could_it_happen_again\" >Could it happen again?<\/a><\/li><\/ul><\/nav><\/div>\n<p>&#8220;<strong>#Here\u2019s why almost all of the internet went down on Tuesday<\/strong>&#8221;<br \/>\n<img decoding=\"async\" src=\"https:\/\/img-cdn.tnwcdn.com\/image?fit=796%2C417&amp;url=https%3A%2F%2Fcdn0.tnwcdn.com%2Fwp-content%2Fblogs.dir%2F1%2Ffiles%2F2021%2F06%2Fcrying-computer.jpg&amp;signature=f9cc2899b665c0066c934e79eb7a7aeb\" \/><\/p>\n<div>If you were having difficulty accessing your favourite website on Tuesday, June 8, you\u2019re not alone. A jaw-dropping number of major websites around the globe <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/californianewstimes.com\/twitch-pinterest-reddit-and-more-go-down-in-fastly-cdn-outage-techcrunch\/384198\/\">suddenly became unavailable<\/a> with no im<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/social-mediaa\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Social Media\" target=\"_blank\" rel=\"noopener\">media<\/a>tely obvious explanation \u2014 before <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/inews.co.uk\/news\/technology\/reddit-down-is-amazon-twich-guardian-websites-internet-503-error-fastly-outage-explained-1040594\">reappearing an hour later<\/a>.<\/p>\n<p>It\u2019s disconcerting when the sites we rely on suddenly become inaccessible, and even more so when it h<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>ens on <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/techcrunch.com\/2021\/06\/08\/numerous-popular-websites-are-facing-an-outage\/\">such a vast scale<\/a>. This outage saw seemingly unrelated sites go dark, including the BBC, Pinterest, the Financial Times, Reddit and even The Conversation.<\/p>\n<p>How can so many sites, from so many different organisations, all be affected by the same incident? To understand the answer, you need to know what a CDN (<a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.cloudflare.com\/learning\/cdn\/what-is-a-cdn\/\">content delivery network<\/a>) is and how crucial they are to the smooth running of the internet.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_happened_and_whats_a_CDN\"><\/span>What happened and what\u2019s a CDN?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>While it\u2019s too early to provide a comprehensive diagnosis of the incident, the internet (once it was accessible again) quickly pointed to the culprit: Fastly.<\/p>\n<p>Fastly is a cloud computing company that provides CDN services to a <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.fastly.com\/customers\/\">range of websites<\/a> including Amazon and Deliveroo. But how can a single company bring down a noticeable proportion of the internet?<\/p>\n<p>When we access a website, we might assume our browser goes off to the internet, talks to the remote site, and then presents the page on our screen. While this is in essence what happens, it masks a much more complicated process, which can include CDN services.<\/p>\n<figure><iframe loading=\"lazy\" title=\"What is a Content Delivery Network (CDN)?\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/Bsq5cKkS33I?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><figcaption><span class=\"caption\">What is a CDN?<\/span><\/figcaption><\/figure>\n<p>A CDN is a service that allows popular websites to keep copies of their pages closer to their customers.<\/p>\n<p>For example, if we want to browse the BBC website, we could talk directly to a server in the United Kingdom. While the internet is perfectly capable of transferring the web page from the UK to Australia, there is an inevitable delay (perhaps a few hundred milliseconds). And nobody likes delays.<\/p>\n<p>The experience for the user can be up to ten times quicker if a copy of the page (or elements of its content) can be held in Australia and delivered on demand.<\/p>\n<p>Of course, accessing a version of the page held in Australia would work great if you\u2019re in Australia but not so much if you\u2019re in, say, Los Angeles. So, to ensure fast content delivery for everyone around the world, CDNs usually work on a global scale.<\/p>\n<p>A CDN service provider will typically operate data centres around the world, holding copies of popular content in major population centres to deliver content in each region.<\/p>\n<p>The speed of delivery of a single image or page element may not be noticeably faster coming from a CDN \u2014 the difference between 200 milliseconds and 20 milliseconds isn\u2019t discernible to most users.<\/p>\n<p>However, modern websites often contain many elements, including images, videos and so on. When combined, the speed improvement through CDNs can be significant.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"So_why_did_so_many_sites_fail\"><\/span>So, why did so many sites fail?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CDN services provide a valuable service to improve our web browsing experience \u2014 but at a cost.<\/p>\n<p>When a major CDN provider such as Fastly experiences a failure, it doesn\u2019t affect just one website; it\u2019s likely to impact every website they support.<\/p>\n<p>In Tuesday\u2019s example, sites across the world suddenly went offline as requests for the CDN-hosted content were not serviced.<\/p>\n<p>This incident demonstrates how reliant we are on <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">technology<\/a> \u2014 and on the specific implementations of technology in our modern lives.<\/p>\n<p>If each website we visit hosted its own content exclusively, we would not be facing these issues. However, our web browsing experience would be much slower, reminiscent of the days of dial-up modems (well, perhaps not quite that bad).<\/p>\n<p>Despite the global outage, it was resolved within about an hour. That would <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/status.fastly.com\/\">seem to indicate<\/a> it\u2019s unlikely to have been a security- or hacking-related issue.<\/p>\n<p>It was more likely due to a short-term failure in Fastly\u2019s infrastructure, or a misconfiguration that spread through its systems.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Could_it_happen_again\"><\/span>Could it happen again?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Fastly is not the only CDN provider. Other high-profile services include Akamai and Cloudflare. Outages are <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.catchpoint.com\/blog\/cloudflare-outage-2019\">not uncommon<\/a>, but they are usually short-lived.<\/p>\n<p>Readers can be assured (assuming you haven\u2019t lost internet again) that service providers are closely watching this incident to ensure lessons are learned for next time.<\/p>\n<p><em>This article by\u00a0<a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/theconversation.com\/profiles\/paul-haskell-dowland-382903\">Paul Haskell-Dowland<\/a>, Associate Dean (Computing and Security) and\u00a0<a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/theconversation.com\/institutions\/edith-cowan-university-720\">Edith Cowan University<\/a> is republished from <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/theconversation.com\">The Conversation<\/a> under a Creative Commons license. Read the <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/theconversation.com\/fastly-global-internet-outage-why-did-so-many-sites-go-down-and-what-is-a-cdn-anyway-162371\">original article<\/a>.<\/em><\/p>\n<\/div>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMLG0nwswvr63Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong>\n<\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more like this article, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/technology\/\" target=\"_blank\" rel=\"noopener\">Technology category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/thenextweb.com\/news\/why-internet-went-down-outage-fastly-cdn\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;#Here\u2019s why almost all of the internet went down on Tuesday&#8221; If you were having difficulty accessing your favourite website on Tuesday, June 8, you\u2019re not alone. A jaw-dropping number of major websites around the globe suddenly became unavailable with no immediately obvious explanation \u2014 before reappearing an hour later. It\u2019s disconcerting when the sites&#8230;<\/p>\n","protected":false},"author":1,"featured_media":269374,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/img-cdn.tnwcdn.com\/image\/tnw?filter_last=1&fit=1280,640&url=https:\/\/cdn0.tnwcdn.com\/wp-content\/blogs.dir\/1\/files\/2021\/06\/crying-computer.jpg&signature=918ce4e0bb92e372fbe626efd68b2585","fifu_image_alt":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-269373","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/269373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=269373"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/269373\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/269374"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=269373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=269373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=269373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}