{"id":4040,"date":"2017-09-22T00:03:55","date_gmt":"2017-09-22T07:03:55","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/?p=4040"},"modified":"2025-06-13T19:28:37","modified_gmt":"2025-06-14T02:28:37","slug":"plasma-index-performance","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/pt\/plasma-index-performance\/","title":{"rendered":"Desempenho de \u00edndice extremamente r\u00e1pido com o Plasma"},"content":{"rendered":"<p><span style=\"font-weight: 400\">No <\/span><a href=\"https:\/\/www.couchbase.com\/blog\/pt\/plasma-storage-engine-gsi\/\"><span style=\"font-weight: 400\">postagem anterior<\/span><\/a><span style=\"font-weight: 400\">Na \u00faltima semana, tivemos a oportunidade de apresentar o Plasma como o novo mecanismo de armazenamento de alto desempenho que alimenta os \u00edndices secund\u00e1rios globais no Couchbase 5.0 (vers\u00e3o beta lan\u00e7ada!). Vimos alguns dos recursos do Plasma e como ele foi projetado com as \u00faltimas tend\u00eancias de hardware em mente para que o desempenho do \u00edndice seja amplamente aprimorado.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Acreditamos realmente que o software precisa aproveitar muitos dos recursos do hardware subjacente em que \u00e9 executado para ser bem-sucedido.  Ao analisar o problema do zero, nossos engenheiros aproveitaram as estruturas de dados sem bloqueios, juntamente com v\u00e1rias outras otimiza\u00e7\u00f5es, e criaram um design que prioriza a mem\u00f3ria no Plasma. Isso nos permite oferecer a melhor experi\u00eancia aos nossos clientes, que exigem as menores lat\u00eancias e a melhor taxa de transfer\u00eancia poss\u00edvel.<\/span><\/p>\n<p><span style=\"font-weight: 400\">A compara\u00e7\u00e3o entre o ForestDB e o Plasma n\u00e3o \u00e9 essencialmente uma compara\u00e7\u00e3o de ma\u00e7\u00e3s com ma\u00e7\u00e3s, pois reescrevemos completamente o mecanismo de armazenamento a partir do zero e rearquitetamos todo o componente.  Enquanto o ForestDB pode ver apenas de 10 a 20 mil muta\u00e7\u00f5es por segundo, o Plasma navega com facilidade, mesmo com cerca de 100 mil muta\u00e7\u00f5es por segundo, e isso tamb\u00e9m em conjuntos de dados muito maiores. Dito isso, em alguns de nossos testes de desempenho internos, observamos a varredura de \u00edndice secund\u00e1rio:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400\">As lat\u00eancias s\u00e3o reduzidas em mais de tr\u00eas vezes<\/span><\/li>\n<li>A taxa de transfer\u00eancia \u00e9 8 vezes melhor<\/li>\n<li>Com stale=false (ou seja, aguardando que todas as muta\u00e7\u00f5es sejam processadas)<i>) :\u00a0<\/i>As lat\u00eancias s\u00e3o 50 vezes menores e a taxa de transfer\u00eancia \u00e9 pelo menos 120 vezes melhor<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">O uso da mem\u00f3ria e do disco foi substancialmente reduzido. As cargas de trabalho na mem\u00f3ria (ou seja, 100% de mem\u00f3ria residente) ocupam at\u00e9 50-60% menos mem\u00f3ria em compara\u00e7\u00e3o com o ForestDB; e o uso do disco foi reduzido em at\u00e9 90% em determinados casos. Devido \u00e0 baixa amplifica\u00e7\u00e3o de grava\u00e7\u00e3o (ou seja, o n\u00famero de grava\u00e7\u00f5es necess\u00e1rias para persistir uma atualiza\u00e7\u00e3o), a vida \u00fatil do dispositivo SSD tamb\u00e9m melhora. Com esses n\u00fameros de desempenho, abrimos as comportas para que nossos clientes experimentem o Couchbase Server 5.0 e validem sua posi\u00e7\u00e3o em batalhas do mundo real.  Estamos ansiosos e esperando para ouvir suas hist\u00f3rias. <\/span><\/p>\n<p><span style=\"font-weight: 400\">O desempenho n\u00e3o \u00e9 algo secund\u00e1rio nesta terra!<\/span><\/p>\n<p><span style=\"font-weight: 400\">Observa\u00e7\u00e3o: Para nossos clientes EE: Se voc\u00ea estiver usando o ForestDB atualmente, durante a atualiza\u00e7\u00e3o para o Couchbase Server 5.0, n\u00f3s recriamos automaticamente seus \u00edndices no Plasma.\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>In the earlier post, we got an opportunity to introduce Plasma as the new performant storage engine that powers Global Secondary Indexes in Couchbase 5.0(beta out!). We saw some of the features of Plasma and how it is designed with [&hellip;]<\/p>","protected":false},"author":3013,"featured_media":4041,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1816,1812],"tags":[1505,1696,1641],"ppma_author":[9055],"class_list":["post-4040","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-couchbase-server","category-n1ql-query","tag-index","tag-indexing","tag-secondary-indexing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v26.1.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Blazing Fast Index Performance with Plasma - The Couchbase Blog<\/title>\n<meta name=\"description\" content=\"Plasma is decades ahead compared with the earlier generation of the standard global secondary indexes. 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