{"id":3813,"date":"2026-07-22T16:28:09","date_gmt":"2026-07-22T16:28:09","guid":{"rendered":"https:\/\/disoh.com\/support\/what-is-ttl-in-dns-and-how-should-you-set-it\/"},"modified":"2026-07-22T16:28:09","modified_gmt":"2026-07-22T16:28:09","password":"","slug":"quest-ce-que-le-ttl-dans-le-dns-et-comment-faut-il-le-configurer","status":"publish","type":"docs","link":"https:\/\/disoh.com\/fr\/support\/what-is-ttl-in-dns-and-how-should-you-set-it\/","title":{"rendered":"Qu'est-ce que le TTL dans le DNS et comment le configurer ?"},"content":{"rendered":"<p>Le TTL, abr\u00e9viation de \u00ab Time To Live \u00bb, est une valeur associ\u00e9e \u00e0 chaque enregistrement DNS qui indique aux autres serveurs pendant combien de temps ils peuvent mettre cet enregistrement en cache avant de le v\u00e9rifier \u00e0 nouveau. Elle est mesur\u00e9e en secondes, et bien que cela puisse para\u00eetre technique, comprendre le TTL vous aide \u00e0 effectuer des modifications DNS en toute fluidit\u00e9 et \u00e0 pr\u00e9voir le temps n\u00e9cessaire pour qu'elles prennent effet. Ce guide explique le r\u00f4le du TTL et comment le configurer de mani\u00e8re judicieuse.<\/p>\n<h2>Ce que contr\u00f4le r\u00e9ellement le TTL<\/h2>\n<p>Lorsqu'un serveur interroge l'un de vos enregistrements DNS, il stocke la r\u00e9ponse pendant la dur\u00e9e du TTL afin de ne pas avoir \u00e0 renouveler la requ\u00eate \u00e0 chaque fois. Un TTL plus long signifie que l'enregistrement est mis en cache plus longtemps, ce qui r\u00e9duit le nombre de requ\u00eates mais ralentit la prise en compte des modifications. Un TTL plus court signifie que les modifications se propagent plus rapidement, mais entra\u00eene des requ\u00eates plus fr\u00e9quentes. En r\u00e9sum\u00e9, le TTL repr\u00e9sente un compromis entre stabilit\u00e9 et flexibilit\u00e9.<\/p>\n<h2>Valeurs TTL courantes<\/h2>\n<ul>\n<li><strong>3 600 secondes (1 heure) :<\/strong> une valeur par d\u00e9faut raisonnable pour la plupart des enregistrements.<\/li>\n<li><strong>86 400 secondes (24 heures) :<\/strong> Id\u00e9al pour les enregistrements qui changent rarement, ce qui r\u00e9duit le nombre de recherches.<\/li>\n<li><strong>300 secondes (5 minutes) :<\/strong> Utile \u00e0 titre temporaire lorsque vous vous appr\u00eatez \u00e0 apporter des modifications.<\/li>\n<\/ul>\n<h2>Comment utiliser le TTL lors des modifications<\/h2>\n<p>Si vous savez que vous allez bient\u00f4t modifier un enregistrement, par exemple en transf\u00e9rant votre site vers un nouveau serveur, il est conseill\u00e9 de r\u00e9duire le TTL \u00e0 l'avance. La proc\u00e9dure recommand\u00e9e est la suivante :<\/p>\n<ul>\n<li>Un ou deux jours avant la modification, r\u00e9duisez la valeur TTL de l'enregistrement concern\u00e9 (par exemple, \u00e0 300 secondes).<\/li>\n<li>Attendez que l'ancien TTL, plus long, arrive \u00e0 expiration pour que la nouvelle valeur, plus courte, prenne effet.<\/li>\n<li>Enregistrez vos modifications ; elles seront d\u00e9sormais r\u00e9percut\u00e9es rapidement.<\/li>\n<li>Une fois que vous avez v\u00e9rifi\u00e9 que tout fonctionne correctement, remettez le TTL \u00e0 sa valeur normale.<\/li>\n<\/ul>\n<p>Cela permet de r\u00e9duire au minimum la p\u00e9riode pendant laquelle les visiteurs pourraient voir les anciens param\u00e8tres.<\/p>\n<h2>Comment configurer le TTL<\/h2>\n<ul>\n<li>Connectez-vous \u00e0 votre gestionnaire DNS ou \u00e0 votre panneau de configuration.<\/li>\n<li>Ouvrir le <strong>DNS<\/strong> ou <strong>\u00c9diteur de zones<\/strong> section.<\/li>\n<li>Modifiez l'enregistrement que vous souhaitez modifier.<\/li>\n<li>D\u00e9finissez la valeur du champ TTL en secondes selon votre choix.<\/li>\n<li>Enregistrer.<\/li>\n<\/ul>\n<h2>D\u00e9pannage<\/h2>\n<ul>\n<li><strong>Le changement prend trop de temps :<\/strong> L'ancien TTL est peut-\u00eatre encore en cache ; attendez qu'il expire.<\/li>\n<li><strong>Trop de recherches :<\/strong> augmenter la dur\u00e9e de vie (TTL) des enregistrements stables.<\/li>\n<li><strong>Planification d'une migration :<\/strong> R\u00e9duisez la valeur TTL bien avant de changer de mode.<\/li>\n<\/ul>\n<h2>Besoin d'aide ?<\/h2>\n<p>Si vous vous appr\u00eatez \u00e0 effectuer une modification du DNS et que vous souhaitez la planifier au mieux, notre \u00e9quipe d'assistance peut vous conseiller sur la valeur de TTL appropri\u00e9e via le chat en direct.<\/p>","protected":false},"excerpt":{"rendered":"<p>TTL, short for Time To Live, is a value attached to every DNS record that tells other servers how long they may cache that record before checking again. It is measured in seconds, and while it sounds technical, understanding TTL helps you make DNS changes smoothly and predict how long they take to appear. This [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"doc_category":[13],"doc_tag":[],"class_list":["post-3813","docs","type-docs","status-publish","hentry","doc_category-domains"],"year_month":"2026-07","word_count":379,"total_views":"23","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Jorn","author_nicename":"jorn","author_url":"https:\/\/disoh.com\/fr\/author\/jorn\/"},"doc_category_info":[{"term_name":"Domains","term_url":"https:\/\/disoh.com\/fr\/docs-category\/domains\/"}],"doc_tag_info":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is TTL in DNS and How Should You Set It? &#8211; Disoh<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/disoh.com\/fr\/soutien\/quest-ce-que-le-ttl-dans-le-dns-et-comment-faut-il-le-configurer\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is TTL in DNS and How Should You Set It? &#8211; Disoh\" \/>\n<meta property=\"og:description\" content=\"TTL, short for Time To Live, is a value attached to every DNS record that tells other servers how long they may cache that record before checking again. 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