{"id":22972,"date":"2026-09-16T01:27:18","date_gmt":"2026-09-16T01:27:18","guid":{"rendered":"https:\/\/www.mailgun.com\/blog\/mailgun-authentication-service-post-mortem-july-2018-2\/"},"modified":"2026-09-16T01:27:18","modified_gmt":"2026-09-16T01:27:18","slug":"mailgun-authentication-service-post-mortem-july-2018","status":"publish","type":"blog","link":"https:\/\/www.mailgun.com\/pt\/blog\/product\/mailgun-authentication-service-post-mortem-july-2018\/","title":{"rendered":"Servi\u00e7o de autentica\u00e7\u00e3o do Mailgun: post mortem de julho de 2018"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Esta publica\u00e7\u00e3o foi feita originalmente em 18 de julho de 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-9815\"><p class=\"h5 m-0\" id=\"toc-title-9815\">\u00cdndice<\/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=\"#o-que-aconteceu\">O que aconteceu<\/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=\"#por-que-isso-aconteceu-o-que-fizemos-a-respeito\">Por que isso aconteceu? O que fizemos a respeito?<\/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=\"#licoes-aprendidas\">Li\u00e7\u00f5es aprendidas<\/a><\/div><\/div><\/nav>\n\n\n<p class=\"wp-block-paragraph\">Coisa de lenda urbana? Uma coincid\u00eancia estranha? Talvez. O que sabemos \u00e9 que esta \u00faltima sexta-feira 13 n\u00e3o foi um bom dia para n\u00f3s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Alguns dos nossos clientes foram impactados pelo tempo de inatividade, e tomamos uma a\u00e7\u00e3o imediata para determinar a causa raiz. Gostar\u00edamos de ter transpar\u00eancia e aproveitar para compartilhar os detalhes das nossas descobertas:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">O que aconteceu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Como parte do trabalho cont\u00ednuo das nossas equipes de engenharia, diversos servi\u00e7os internos e externos foram atualizados para delegar a autentica\u00e7\u00e3o a um servi\u00e7o de autentica\u00e7\u00e3o centralizado. Um desses servi\u00e7os atualizados foi implantado logo ap\u00f3s as 10:00 UTC (07:00 BRT).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0s 11:00 UTC (08:00 BRT) da sexta-feira, 13 de julho, a engenharia do Mailgun come\u00e7ou a receber alertas de problemas em diversos servi\u00e7os. Nossa investiga\u00e7\u00e3o inicial sugeriu que o problema estava relacionado a essa altera\u00e7\u00e3o de software lan\u00e7ada mais cedo naquele dia, e iniciamos esfor\u00e7os imediatos para reverter o lan\u00e7amento.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A investiga\u00e7\u00e3o cont\u00ednua revelou que, apesar da revers\u00e3o, nossos servi\u00e7os de autentica\u00e7\u00e3o ainda n\u00e3o estavam respondendo em tempo h\u00e1bil. Os servi\u00e7os de autentica\u00e7\u00e3o (e afins) foram reiniciados, e os sistemas come\u00e7aram a retomar as opera\u00e7\u00f5es normais. \u00c0s 12:44 UTC (09:44 BRT), todos os servi\u00e7os estavam totalmente funcionais novamente.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Por que isso aconteceu? O que fizemos a respeito?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Antes desse lan\u00e7amento, t\u00ednhamos implantado um conjunto n\u00e3o relacionado de altera\u00e7\u00f5es no servi\u00e7o de autentica\u00e7\u00e3o. Isso introduziu uma lat\u00eancia adicional ao fluxo de autentica\u00e7\u00e3o e reduziu a taxa de atendimento das solicita\u00e7\u00f5es. Em combina\u00e7\u00e3o com a carga adicional gerada pelos nossos servi\u00e7os atualizados, a fila de solicita\u00e7\u00f5es de autentica\u00e7\u00e3o cresceu mais r\u00e1pido do que podiam ser atendidas. Al\u00e9m disso, as solicita\u00e7\u00f5es com falha estavam sendo tentadas novamente, o que agravou ainda mais o problema de carga.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trabalhamos para reduzir o impacto e tomamos diversas medidas imediatas para restaurar os servi\u00e7os:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>reduzindo a carga de autentica\u00e7\u00e3o ao reverter o servi\u00e7o atualizado mais recentemente<\/li>\n\n\n\n<li>removendo a depend\u00eancia circular para reduzir a lat\u00eancia<\/li>\n\n\n\n<li> reiniciando os servi\u00e7os de autentica\u00e7\u00e3o para limpar o ac\u00famulo de solicita\u00e7\u00f5es<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Li\u00e7\u00f5es aprendidas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A engenharia do Mailgun realizou uma an\u00e1lise abrangente da causa raiz desse incidente, e identificamos v\u00e1rias a\u00e7\u00f5es que tomaremos para reduzir a probabilidade de incidentes futuros.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Al\u00e9m das altera\u00e7\u00f5es de c\u00f3digo e de configura\u00e7\u00e3o feitas para remover a lat\u00eancia de resposta desnecess\u00e1ria, tamb\u00e9m estamos no processo de formaliza\u00e7\u00e3o dos SLOs. Isso ajudar\u00e1 a aumentar nossa visibilidade sobre a lat\u00eancia do servi\u00e7o e introduzir\u00e1 uma coleta de dados, monitoramento e alerta mais abrangentes para auxiliar na aplica\u00e7\u00e3o dos SLOs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tamb\u00e9m estamos desenvolvendo ferramentas para identificar \u00e1reas com problemas potenciais mais cedo no ciclo de desenvolvimento e lan\u00e7amento, a fim de evitar que incidentes como esse impactem nossos clientes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Agradecemos de verdade a compreens\u00e3o dos nossos clientes enquanto trabalh\u00e1vamos para resolver o problema rapidamente. Ficaremos felizes em responder a quaisquer perguntas ou resolver preocupa\u00e7\u00f5es sobre as contas impactadas \u2013 basta abrir um ticket de suporte, e a nossa equipe entrar\u00e1 em contato com voc\u00ea.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma an\u00e1lise do tempo de inatividade do servi\u00e7o de autentica\u00e7\u00e3o em julho de 2018. Leia mais&#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-22972","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>Servi\u00e7o de autentica\u00e7\u00e3o do Mailgun \u2013 post mortem de julho de 2018 - Transactional Email API Service For Developers | Mailgun<\/title>\n<meta name=\"description\" content=\"Uma an\u00e1lise do tempo de inatividade do servi\u00e7o de autentica\u00e7\u00e3o em julho de 2018. 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