{"id":23822,"date":"2026-09-16T09:57:34","date_gmt":"2026-09-16T09:57:34","guid":{"rendered":"https:\/\/www.mailgun.com\/blog\/service-authentification-mailgun-post-mortem-juillet-2018\/"},"modified":"2026-09-16T09:57:34","modified_gmt":"2026-09-16T09:57:34","slug":"service-authentification-mailgun-post-mortem-juillet-2018","status":"publish","type":"blog","link":"https:\/\/www.mailgun.com\/fr\/blog\/product\/service-authentification-mailgun-post-mortem-juillet-2018\/","title":{"rendered":"Service d&rsquo;authentification Mailgun\u00a0: post-mortem de juillet 2018"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Cet article a \u00e9t\u00e9 initialement publi\u00e9 le 18 juillet 2018.<\/strong><\/p>\n\n\n\r\n    <nav data-content-type=\"longform\" class=\"toc-block longform-spacings px-5 py-6 px-md-6 px-lg-7 py-md-7 bg-light fs-sm rounded-lg\" aria-labelledby=\"toc-title-8215\"><p class=\"h5 m-0\" id=\"toc-title-8215\">Table des mati\u00e8res<\/p><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">01<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#voici-ce-quil-sest-passe\">Voici ce qu&rsquo;il s&rsquo;est pass\u00e9<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">02<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#pourquoi-cela-sest-il-produit-quavez-vous-fait-pour-y-remedier\">Pourquoi cela s&rsquo;est-il produit\u00a0? Qu&rsquo;avez-vous fait pour y rem\u00e9dier\u00a0?<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">03<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#lecons-retenues\">Le\u00e7ons retenues<\/a><\/div><\/div><\/nav>\n\n\n<p class=\"wp-block-paragraph\">Une l\u00e9gende urbaine\u00a0? Une \u00e9trange co\u00efncidence\u00a0? Peut-\u00eatre. Ce que nous savons, c&rsquo;est que ce vendredi 13 n&rsquo;a pas \u00e9t\u00e9 une tr\u00e8s bonne journ\u00e9e pour nous.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Certains de nos clients ont \u00e9t\u00e9 affect\u00e9s par une interruption de service, et nous avons men\u00e9 une action imm\u00e9diate pour en d\u00e9terminer la cause premi\u00e8re. Nous souhaitons faire preuve de transparence et prendre le temps de partager les d\u00e9tails de nos conclusions\u00a0:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Voici ce qu&rsquo;il s&rsquo;est pass\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dans le cadre des travaux continus de nos \u00e9quipes d&rsquo;ing\u00e9nierie, plusieurs de nos services internes et externes ont \u00e9t\u00e9 mis \u00e0 jour afin de d\u00e9l\u00e9guer l&rsquo;authentification \u00e0 un service d&rsquo;authentification centralis\u00e9. L&rsquo;un de ces services mis \u00e0 jour a \u00e9t\u00e9 d\u00e9ploy\u00e9 juste apr\u00e8s 10 h UTC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le vendredi 13 juillet \u00e0 11 h UTC, l&rsquo;\u00e9quipe d&rsquo;ing\u00e9nierie de Mailgun a commenc\u00e9 \u00e0 recevoir des alertes signalant des probl\u00e8mes sur plusieurs services. Notre enqu\u00eate initiale a sugg\u00e9r\u00e9 que le probl\u00e8me \u00e9tait li\u00e9 \u00e0 la modification logicielle publi\u00e9e plus t\u00f4t dans la journ\u00e9e, et nous avons imm\u00e9diatement entrepris d&rsquo;annuler cette mise \u00e0 jour.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La poursuite de l&rsquo;enqu\u00eate a r\u00e9v\u00e9l\u00e9 que, malgr\u00e9 le retour \u00e0 la version pr\u00e9c\u00e9dente, nos services d&rsquo;authentification ne r\u00e9pondaient toujours pas dans les d\u00e9lais impartis. Les services d&rsquo;authentification (et les services associ\u00e9s) ont \u00e9t\u00e9 red\u00e9marr\u00e9s, et les syst\u00e8mes ont commenc\u00e9 \u00e0 reprendre un fonctionnement normal. \u00c0 12 h 44 UTC, tous les services \u00e9taient de nouveau enti\u00e8rement fonctionnels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi cela s&rsquo;est-il produit\u00a0? Qu&rsquo;avez-vous fait pour y rem\u00e9dier\u00a0?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Avant cette mise \u00e0 jour, nous avions d\u00e9ploy\u00e9 un ensemble de modifications ind\u00e9pendantes sur le service d&rsquo;authentification. Cela a introduit une latence suppl\u00e9mentaire dans le flux d&rsquo;authentification et a r\u00e9duit la vitesse de traitement des requ\u00eates. En raison de la charge suppl\u00e9mentaire g\u00e9n\u00e9r\u00e9e par la mise \u00e0 jour de nos services, la file d&rsquo;attente des requ\u00eates d&rsquo;authentification s&rsquo;est allong\u00e9e plus vite qu&rsquo;elle ne pouvait \u00eatre trait\u00e9e. De plus, les requ\u00eates \u00e9chou\u00e9es \u00e9taient relanc\u00e9es, ce qui a encore aggrav\u00e9 le probl\u00e8me de charge.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous nous sommes efforc\u00e9s de r\u00e9duire l&rsquo;impact et avons pris plusieurs mesures imm\u00e9diates pour restaurer les services en\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>r\u00e9duisant la charge d&rsquo;authentification par l&rsquo;annulation de la derni\u00e8re mise \u00e0 jour du service<\/li>\n\n\n\n<li>supprimant la d\u00e9pendance circulaire pour r\u00e9duire la latence<\/li>\n\n\n\n<li> red\u00e9marrant les services d&rsquo;authentification pour vider la file d&rsquo;attente des requ\u00eates<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Le\u00e7ons retenues<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L&rsquo;\u00e9quipe d&rsquo;ing\u00e9nierie de Mailgun a men\u00e9 une analyse approfondie de la cause premi\u00e8re de cet incident, et nous avons identifi\u00e9 plusieurs actions que nous allons entreprendre pour r\u00e9duire la probabilit\u00e9 de futurs incidents.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En plus des modifications de code et de configuration apport\u00e9es pour supprimer la latence de r\u00e9ponse inutile, nous sommes \u00e9galement en train de formaliser nos SLO. Cela permettra d&rsquo;am\u00e9liorer notre visibilit\u00e9 sur la latence des services et de mettre en place une collecte de donn\u00e9es, une surveillance et des alertes plus compl\u00e8tes pour contribuer au respect des SLO.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous d\u00e9veloppons \u00e9galement des outils pour identifier d&rsquo;\u00e9ventuels probl\u00e8mes plus t\u00f4t dans le cycle de d\u00e9veloppement et de publication, afin d&rsquo;\u00e9viter que de tels incidents n&rsquo;impactent nos clients.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nous appr\u00e9cions grandement la compr\u00e9hension dont ont fait preuve nos clients pendant que nous nous efforcions de r\u00e9soudre le probl\u00e8me rapidement. Nous nous ferons un plaisir de r\u00e9pondre \u00e0 toutes vos questions ou pr\u00e9occupations concernant les comptes affect\u00e9s. Il vous suffit d&rsquo;ouvrir un ticket aupr\u00e8s du support pour que notre \u00e9quipe vous r\u00e9ponde.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Retour sur l&rsquo;interruption du service d&rsquo;authentification survenue en juillet 2018. En savoir plus&#8230;<\/p>\n","protected":false},"author":31,"featured_media":4555,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"blog_category":[22],"class_list":["post-23822","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-product"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Service d&#039;authentification Mailgun \u2013 Post-mortem de juillet 2018 - Transactional Email API Service For Developers | Mailgun<\/title>\n<meta name=\"description\" content=\"Retour sur l&#039;interruption du service d&#039;authentification survenue en juillet 2018. 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