{"id":1581,"date":"2009-12-15T18:16:49","date_gmt":"2009-12-15T23:16:49","guid":{"rendered":"http:\/\/www.hostingdiscussion.com\/blog\/?p=1581"},"modified":"2024-07-30T23:53:12","modified_gmt":"2024-07-30T23:53:12","slug":"time-to-live-instantaneous","status":"publish","type":"post","link":"https:\/\/hostingdiscussion.com\/news\/time-to-live-instantaneous\/","title":{"rendered":"Time to live? Instantaneous!"},"content":{"rendered":"<p>The problem with the current Domain Name System and TTL (Time to Live) became glaringly apparent recently when the entire <a href=\"http:\/\/www.theregister.co.uk\/2009\/10\/13\/sweden_dns_outage\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">country of Sweden utterly disappeared off the Internet grid<\/a>.  A tiny typo found in a server script was the culprit and, while seemingly insignificant, it had a dramatic impact on all \u201c.se\u201d web sites felt for weeks.<!--more--><\/p>\n<p>With the current TTL system, a caching or recursive nameserver sends queries to authoritative nameservers requesting a resource record.  The recursive nameserver then caches the record for the specified TTL.  The standard TTL within a DNS record is usually set at 86,400 seconds or 24 hours.  In some cases, the TTL is set for a longer amount of time and can be as long as a week.  Even though the error had been caught and corrected in less than an hour, a number of \u201c.se\u201d domains remained inaccessible for at least a week.<\/p>\n<p>These types of issues clearly indicate a need for real-time update processing.  <a href=\"http:\/\/www.neustar.biz\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Neustar<\/a> and <a href=\"http:\/\/www.opendns.com\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">OpenDNS<\/a> have combined resources to answer the call with the DNS Real-time Directory.  This new service is comprised of three elements: a combined collection of DNS changes, authoritative nameservers, and recursive nameservers.  The DNS Real-time Directory bypasses the TTL cache settings and allows for nearly immediate updating of IP and DNS records.<\/p>\n<p>OpenDNS has been using the new service offered by Neustar for over a month and recently publicly announced the service.  The announcement just happened to coincided with the latest Google DNS service release.  OpenDNS founder David Ulevitch <a href=\"http:\/\/blog.opendns.com\/2009\/12\/03\/opendns-google-dns\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">posted out his thoughts<\/a> on the two services.  An online dashboard to control web site accessing, DNS caches that are more up-to-date than Google&#8217;s, and differing views on user privacy are the biggest differences.<\/p>\n<p>Personally, I&#8217;m excited about the prospect of real-time DNS updates.  Having dealt with the tiniest of typos in server updating scripts, I have had to deal with the hassle of waiting for DNS records to propagate throughout the Internet after making corrections. With each passing hour, a business domain that is not accessible ends up equaling to a loss of new and current customers.  24 hours can seem like an eternity.  A week?  Pure hell and a public relations nightmare for many businesses.<\/p>\n<p>Patience is tossed out the window, it seems, when it comes to all things Internet &#8211; whether a web surfer or an online business.\u00a0 Solutions to long TTL records leading to domain inaccessibility are needed as can be seen by the Swedish domain name fiasco.\u00a0  The DNS Real-time Directory not only addresses this issue but is yet another step in the direction of a speedier Internet experience for all.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The problem with the current Domain Name System and TTL (Time to Live) became glaringly apparent recently when the entire country of Sweden utterly disappeared off the Internet grid. A tiny typo found in a server script was the culprit and, while seemingly insignificant, it had a dramatic impact on all \u201c.se\u201d web sites felt [&hellip;]<\/p>\n","protected":false},"author":20622,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1838,51,52],"tags":[1177,1178,1179,1180,1149,725,1150,155,74,1151,473,1181,256,1182,1183,1184,1185,1186,1187,1188,1189,1190,1191],"class_list":["post-1581","post","type-post","status-publish","format-standard","hentry","category-archives","category-technology","category-hosting-news","tag-se","tag-accessibility","tag-caching","tag-david-ulevitch","tag-dns","tag-domain-name","tag-domain-name-system","tag-domain-names","tag-domains","tag-google-dns","tag-grid","tag-internet-protocol","tag-ip","tag-nameserver","tag-nameservers","tag-neustar","tag-opendns","tag-propagate","tag-propagation","tag-real-time","tag-sweden","tag-time-to-live","tag-ttl"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Time to live? 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