{"id":4437,"date":"2024-10-14T16:26:59","date_gmt":"2024-10-14T19:26:59","guid":{"rendered":"https:\/\/muttstudio.com.br\/what-is-ttl-in-dns-and-why-does-it-matter\/"},"modified":"2024-12-03T15:53:44","modified_gmt":"2024-12-03T18:53:44","slug":"what-is-ttl-in-dns-and-why-does-it-matter","status":"publish","type":"post","link":"https:\/\/muttstudio.com.br\/en\/what-is-ttl-in-dns-and-why-does-it-matter\/","title":{"rendered":"What is TTL in DNS and why does it matter?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">TTL (Time to Live) is a concept that often comes up when we talk about DNS (Domain Name System). But what exactly does that mean? Let&#8217;s break it down.<\/p>\n\n<p class=\"wp-block-paragraph\">DNS is responsible for translating domain names (such as <a href=\"http:\/\/www.exemplo.com\">www.exemplo.com<\/a>) into IP addresses (numbers that identify the servers where websites are hosted). When you access a website, the DNS does this \u201ctranslation\u201d so that your browser can find the site. TTL comes into play here.<\/p>\n\n<p class=\"wp-block-paragraph\">TTL is the time that a server or device will \u201csave\u201d the DNS information before rechecking that it is correct. In other words, it&#8217;s the expiration date of a website&#8217;s data in your device&#8217;s memory or in the DNS servers&#8217; cache.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>How TTL Works in Practice<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Imagine that you have accessed <a href=\"http:\/\/www.exemplo.com\">www.exemplo.com.<\/a> The DNS server will look up the site&#8217;s IP and store this information in a cache for a time defined by the TTL. If the TTL is set to 1 hour, for example, your device or the server will use the same IP for the next visits during that period, without querying DNS again.<\/p>\n\n<p class=\"wp-block-paragraph\">Now, think of a scenario in which you change the IP address of a website. If the TTL is set to 24 hours, visitors can continue to access the site on the old IP until the cache \u201cexpires\u201d. For this reason, a lower TTL setting (such as 5 minutes) is often made before a server change to ensure that changes are propagated more quickly.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Practical TTL example<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">Let&#8217;s say you make a change to your website and you want people to see it as soon as possible. If the DNS TTL is set to 1 hour, your visitors may take up to an hour to see what&#8217;s new. But if the TTL is set to 5 minutes, the changes will appear much faster, because the cache will be updated more frequently.<\/p>\n\n<p class=\"wp-block-paragraph\">Normally, TTL values vary from seconds to days, depending on the needs of each site.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Conclusion<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">TTL is a way of optimizing web traffic, lightening the load on DNS servers and speeding up the site&#8217;s response time for users. Setting the TTL correctly can help your site behave more efficiently, especially in times of change.<\/p>\n\n<p class=\"wp-block-paragraph\">See you next time!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how it works and how its configuration can influence the speed of changes and the loading of your site.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[247,213,222,232],"tags":[249,211,214,248,251,250,207],"class_list":["post-4437","post","type-post","status-publish","format-standard","hentry","category-performance-en","category-server-en","category-technology","category-what-it-is","tag-dns-en","tag-hints","tag-host-en","tag-host-en-2","tag-server-en","tag-servers","tag-technology"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is TTL in DNS and why does it matter? 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