{"id":13422,"date":"2022-06-22T13:32:18","date_gmt":"2022-06-22T20:32:18","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/?p=13422"},"modified":"2025-06-13T18:21:55","modified_gmt":"2025-06-14T01:21:55","slug":"couchbase-analytics-high-availability-replicas","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/pt\/couchbase-analytics-high-availability-replicas\/","title":{"rendered":"Dados em tempo real sempre dispon\u00edveis com alta disponibilidade no Couchbase Analytics"},"content":{"rendered":"<p><span style=\"font-weight: 400\">Como parte da vers\u00e3o 7.1 do Couchbase Server, <\/span><a href=\"https:\/\/docs.couchbase.com\/server\/current\/analytics\/introduction.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Servi\u00e7o de an\u00e1lise do Couchbase<\/span><\/a><span style=\"font-weight: 400\"> tem o prazer de anunciar o apoio da <a href=\"https:\/\/www.couchbase.com\/blog\/pt\/combine-clusters-to-achieve-high-availability\/\">Alta disponibilidade<\/a> disponibilidade de recursos para garantir que os usu\u00e1rios possam acessar dados nas cole\u00e7\u00f5es\/conjuntos de dados do Analytics Service quando um ou mais n\u00f3s do Analytics n\u00e3o estiverem dispon\u00edveis.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Ponto problem\u00e1tico do cliente<\/span><\/h2>\n<p><span style=\"font-weight: 400\">O principal desafio que os usu\u00e1rios encontravam quando um ou mais n\u00f3s do Analytics sofriam falha ou ficavam inativos para manuten\u00e7\u00e3o programada, patches de seguran\u00e7a e\/ou atualiza\u00e7\u00f5es de n\u00f3s, os dados residentes nos n\u00f3s do Analytics Service n\u00e3o ficavam totalmente dispon\u00edveis para consulta ou gera\u00e7\u00e3o de relat\u00f3rios, o que levava os usu\u00e1rios corporativos a n\u00e3o conseguirem cumprir os contratos de n\u00edvel de servi\u00e7o (SLAs). Al\u00e9m disso, quando o n\u00f3 com falha voltasse a ficar on-line, ele teria que reconstruir as cole\u00e7\u00f5es\/conjuntos de dados novamente a partir dos Data Services subjacentes, incluindo os \u00edndices. Isso resultaria em inefici\u00eancias operacionais e afetaria o tempo de obten\u00e7\u00e3o de insights.<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Como funciona a alta disponibilidade?<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Cada n\u00f3 que executa o Analytics Service tem uma ou mais parti\u00e7\u00f5es de dados. Os dados ingeridos pelo Analytics Service s\u00e3o particionados por hash em todas as parti\u00e7\u00f5es de dados. Quando os dados s\u00e3o ingeridos em cada parti\u00e7\u00e3o, eles s\u00e3o inicialmente armazenados em uma \u00e1rvore b na mem\u00f3ria. Quando um determinado limite de mem\u00f3ria \u00e9 atingido, a \u00e1rvore b \u00e9 mantida em disco e \u00e9 programada para ser replicada de forma ass\u00edncrona para um ou mais n\u00f3s do Analytics (com base no n\u00famero de r\u00e9plicas configuradas). Quando ocorre uma falha em um n\u00f3 que executa o Servi\u00e7o de an\u00e1lise, uma de suas r\u00e9plicas \u00e9 promovida para atender \u00e0s parti\u00e7\u00f5es que foram atendidas pelo n\u00f3 com falha. Isso permitir\u00e1 que o servi\u00e7o do Analytics continue funcionando ap\u00f3s o failover. A parte dos dados que precisar\u00e1 ser reingressada do Data Service ser\u00e1 determinada pelo estado da r\u00e9plica no momento da promo\u00e7\u00e3o, da seguinte forma:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Estado da r\u00e9plica<\/b><\/td>\n<td><b>Dados para reingest\u00e3o<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400\">Todos os componentes do LSM foram replicados e o n\u00f3 com falha n\u00e3o tinha dados na mem\u00f3ria.<\/span><\/td>\n<td><span style=\"font-weight: 400\">Nenhum<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400\">Todos os componentes do LSM foram replicados e o n\u00f3 com falha tinha dados na mem\u00f3ria.<\/span><\/td>\n<td><span style=\"font-weight: 400\">Somente os dados na mem\u00f3ria (semelhante \u00e0 reinicializa\u00e7\u00e3o de um n\u00f3)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400\">Alguns componentes do LSM n\u00e3o foram replicados<\/span><\/td>\n<td><span style=\"font-weight: 400\">Iniciar a partir do \u00faltimo componente LSM replicado\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400\">O servi\u00e7o Analytics continuar\u00e1 a funcionar em um estado desequilibrado at\u00e9 que uma das a\u00e7\u00f5es a seguir seja executada:<\/span><\/p>\n<ol>\n<li style=\"list-style-type: none\">\n<ol>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Recupera\u00e7\u00e3o do n\u00f3: O n\u00f3 com falha ser\u00e1 ressincronizado a partir da r\u00e9plica promovida e voltar\u00e1 a ser o mestre para suas parti\u00e7\u00f5es de armazenamento.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Remo\u00e7\u00e3o de n\u00f3s: Se o n\u00f3 com falha for removido, o Analytics redistribuir\u00e1 os dados entre os n\u00f3s restantes do cluster.<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><span style=\"font-weight: 400\">Para que o HA funcione, insira pelo menos uma ou mais r\u00e9plicas a serem criadas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Isso pode ser configurado no workbench do servidor em Settings (veja a imagem instant\u00e2nea abaixo). Essa configura\u00e7\u00e3o tamb\u00e9m pode ser obtida chamando <\/span><a href=\"https:\/\/docs.couchbase.com\/server\/current\/manage\/manage-settings\/general-settings.html#analytics-replicas\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">esta API<\/span><\/a><span style=\"font-weight: 400\">. \u00c9 necess\u00e1rio executar um Rebalanceamento para que a altera\u00e7\u00e3o tenha efeito. Veja esse novo recurso em a\u00e7\u00e3o em <a href=\"https:\/\/www.youtube.com\/watch?v=W_RTv_yQHqw\" target=\"_blank\" rel=\"noopener\">o seguinte v\u00eddeo<\/a>:<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"Demonstra\u00e7\u00e3o: Dados em tempo real sempre dispon\u00edveis sem interrup\u00e7\u00f5es\/Alta disponibilidade no Couchbase Analytics\" width=\"900\" height=\"506\" src=\"https:\/\/www.youtube.com\/embed\/W_RTv_yQHqw?feature=oembed&#038;enablejsapi=1&#038;origin=https:\/\/www.couchbase.com\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<h2><span style=\"font-weight: 400\">Benef\u00edcios comerciais da alta disponibilidade<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Agora que sabemos como o recurso de alta disponibilidade funciona nos servi\u00e7os do Analytics, aqui est\u00e3o os principais benef\u00edcios:<\/span><\/p>\n<ol>\n<li style=\"list-style-type: none\">\n<ol>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Dados sempre dispon\u00edveis e sempre ativos em tempo real com maior confiabilidade<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Interrup\u00e7\u00e3o m\u00ednima no tempo para insights quando um ou mais n\u00f3s com falha est\u00e3o sendo recuperados, reconstru\u00eddos e reequilibrados<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Nenhum impacto no tempo de obten\u00e7\u00e3o de insights para relat\u00f3rios e consultas anal\u00edticas, melhorando a experi\u00eancia do cliente<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<h2><span style=\"font-weight: 400\">Resumo<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Espero que voc\u00ea esteja animado com essa solicita\u00e7\u00e3o de recurso t\u00e3o desejada para que o Couchbase Analytics esteja altamente dispon\u00edvel usando r\u00e9plicas de an\u00e1lise. Agora, seus dados anal\u00edticos estar\u00e3o sempre ativos e dispon\u00edveis para consultar e analisar continuamente seus dados quase em tempo real, sem interrup\u00e7\u00f5es.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Abaixo est\u00e1 uma lista de recursos para voc\u00ea come\u00e7ar e aguardamos seu feedback sobre <\/span><a href=\"https:\/\/www.couchbase.com\/blog\/pt\/forums\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">F\u00f3runs do Couchbase<\/span><\/a><span style=\"font-weight: 400\">.\u00a0<\/span><\/p>\n<h3><b>Recursos<\/b><\/h3>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li><a href=\"https:\/\/docs.couchbase.com\/server\/7.1\/manage\/manage-settings\/general-settings.html#analytics-replicas\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Como definir r\u00e9plicas do Analytics<\/span><\/a><\/li>\n<li><a href=\"https:\/\/docs.couchbase.com\/server\/7.1\/learn\/clusters-and-availability\/rebalance.html#rebalancing-the-analytics-service\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Saiba como as r\u00e9plicas do Analytics Service funcionam com o Rebalance e o Failover<\/span><\/a><\/li>\n<li><a href=\"https:\/\/docs.couchbase.com\/server\/current\/introduction\/whats-new.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400\">Link para o que h\u00e1 de novo na vers\u00e3o 7.1<\/span><\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>As part of the Couchbase Server 7.1 release, Couchbase Analytics Service is very excited to announce the support of High Availability capability availability to ensure users can access data within Analytics Service collections\/datasets when one or more Analytics nodes is [&hellip;]<\/p>","protected":false},"author":49475,"featured_media":11333,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[2294,1816,1812],"tags":[1952,2127,2126,9604],"ppma_author":[9098],"class_list":["post-13422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analytics","category-couchbase-server","category-n1ql-query","tag-data-replication","tag-disaster-recovery","tag-high-availability","tag-lsm"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.8 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Highly Available Data: Always-Available Real-Time Data<\/title>\n<meta name=\"description\" content=\"Couchbase discusses how the high availability capability works, the business benefits &amp; more. 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