{"id":684,"date":"2026-01-20T00:27:12","date_gmt":"2026-01-20T08:27:12","guid":{"rendered":"https:\/\/www.couchbase.com\/\/concepts\/resources-concepts-write-back-cache\/"},"modified":"2026-07-21T16:12:31","modified_gmt":"2026-07-21T23:12:31","slug":"resources-concepts-write-back-cache","status":"publish","type":"concepts","link":"https:\/\/www.couchbase.com\/pt\/resources\/concepts\/write-back-cache\/","title":{"rendered":"Cache Write-Back"},"content":{"rendered":"<div class=\"wp-block-group alignfull wp-block-hero is-layout-constrained wp-container-core-group-is-layout-3838c6e4 wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--2-xl);padding-right:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--2-xl);padding-left:var(--wp--preset--spacing--lg)\">\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-0fd64a4d wp-block-columns-is-layout-flex\" style=\"padding-bottom:var(--wp--preset--spacing--xl)\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-container-core-column-is-layout-bdca1ed4 wp-block-column-is-layout-flow\" style=\"flex-basis:45%\">\n<h1 id=\"h-write-back-cache\" class=\"wp-block-heading has-heading-xl-font-size\">Cache Write-Back<\/h1>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\">A cache write-back \u00e9 uma t\u00e9cnica de cache onde os dados s\u00e3o gravados primeiro na cache e no armazenamento principal depois<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\" style=\"margin-top:var(--wp--preset--spacing--md)\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.couchbase.com\/pt\/products\/analytics\/\" title=\"Reduzir a Lat\u00eancia do Sistema\" target=\"_self\">Reduzir a Lat\u00eancia do Sistema<\/a><\/div>\n\n\n\n<div class=\"wp-block-button is-style-outline is-style-outline--1\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/docs.couchbase.com\/columnar\/intro\/intro.html\" title=\"Saiba mais\" target=\"_self\">Saiba mais<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center hero__media-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:55%\">\n<figure class=\"wp-block-image size-full has-custom-border size-large hero__image\"><img decoding=\"async\" src=\"https:\/\/www.couchbase.com\/wp-content\/uploads\/sites\/6\/2026\/07\/full-orange-star-4.png\" alt=\"\" class=\"wp-image-576\" style=\"border-top-left-radius:var(--wp--custom--border-radius--card);border-top-right-radius:var(--wp--custom--border-radius--card);border-bottom-left-radius:var(--wp--custom--border-radius--card);border-bottom-right-radius:var(--wp--custom--border-radius--card)\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-container-core-group-is-layout-38f163e3 wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"h-what-is-write-back-cache\" class=\"wp-block-heading\">Cache write-back \u00e9 uma pol\u00edtica de cache onde as opera\u00e7\u00f5es de escrita s\u00e3o feitas primeiramente na cache e marcadas como \"sujas\" (dirty). A escrita no dispositivo de armazenamento principal (como o disco r\u00edgido) s\u00f3 acontece depois, quando o bloco de dados sujo na cache precisa ser substitu\u00eddo por um novo bloco ou quando o sistema \u00e9 desligado.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cache de grava\u00e7\u00e3o \u00e9 uma estrat\u00e9gia de cache que aprimora o desempenho do sistema, armazenando temporariamente dados em um meio de alta velocidade (geralmente mem\u00f3ria) e adiando as atualiza\u00e7\u00f5es para o armazenamento prim\u00e1rio (geralmente disco). Ao contr\u00e1rio de outras estrat\u00e9gias de cache, o write-back prioriza a velocidade, escrevendo primeiro os dados no cache e sincronizando com o armazenamento principal de forma ass\u00edncrona. Essa estrat\u00e9gia reduz a lat\u00eancia para opera\u00e7\u00f5es de grava\u00e7\u00e3o, mas requer gerenciamento cuidadoso para garantir a consist\u00eancia dos dados.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este recurso explorar\u00e1 diferentes estrat\u00e9gias de cache, comparar\u00e1 o write-back com outras abordagens, discutir\u00e1 seus benef\u00edcios e desafios e fornecer\u00e1 orienta\u00e7\u00f5es sobre quando us\u00e1-lo. Seja voc\u00ea um desenvolvedor de aplicativos ou arquiteto, entender o cache write-back pode ajud\u00e1-lo a otimizar o desempenho e a escalabilidade em seus sistemas.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#strategies\" class=\"scrollToHash\">Estrat\u00e9gias de cache<\/a><\/li>\n\n\n\n<li><a href=\"#versus\" class=\"scrollToHash\">Write-back vs. write-through<\/a><\/li>\n\n\n\n<li><a href=\"#benefits\" class=\"scrollToHash\">Benef\u00edcios e desafios do cache write-back<\/a><\/li>\n\n\n\n<li><a href=\"#risks\" class=\"scrollToHash\">E quanto aos riscos de perda de dados de write-back?<\/a><\/li>\n\n\n\n<li><a href=\"#use-cases\" class=\"scrollToHash\">Casos de uso de cache write-back<\/a><\/li>\n\n\n\n<li><a href=\"#choose\" class=\"scrollToHash\">Escolhendo entre cache write-back e write-through<\/a><\/li>\n\n\n\n<li><a href=\"#resources\" class=\"scrollToHash\">Principais pontos e recursos<br>\n<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"strategies\" class=\"wp-block-heading\">Estrat\u00e9gias de cache<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"h-caching-strategies-caching-is-the-practice-of-temporarily-storing-copies-of-data-for-faster-retrieval-the-most-common-example-is-ram-disk-ram-is-typically-faster-than-disk-but-is-also-more-expensive-and-limited-using-ram-to-cache-frequently-accessed-data-can-improve-performance-different-caching-strategies-suit-different-use-cases-balancing-speed-consistency-and-complexity\">Cache \u00e9 a pr\u00e1tica de armazenar temporariamente c\u00f3pias de dados para recupera\u00e7\u00e3o mais r\u00e1pida. O exemplo mais comum \u00e9 RAM + disco. A RAM \u00e9 geralmente mais r\u00e1pida que o disco, mas tamb\u00e9m \u00e9 mais cara e limitada. Usar RAM para armazenar em cache dados acessados com frequ\u00eancia pode melhorar o desempenho. Diferentes estrat\u00e9gias de cache se adequam a diferentes casos de uso, equilibrando velocidade, consist\u00eancia e complexidade.<\/p>\n\n\n\n<h3 id=\"h-write-back-cache-0\" class=\"wp-block-heading\">Cache de grava\u00e7\u00e3o posterior<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O cache de grava\u00e7\u00e3o direta primeiro armazena dados no cache e os enfileira para serem gravados no armazenamento prim\u00e1rio em um momento posterior. Quando ocorre uma grava\u00e7\u00e3o, ela \u00e9 imediatamente considerada bem-sucedida, desde que os dados sejam armazenados no cache, sem esperar que o disco seja atualizado. O sistema atualiza o armazenamento principal de forma ass\u00edncrona. Leituras subsequentes s\u00e3o feitas da mem\u00f3ria, o que oferece outro benef\u00edcio de desempenho. A grava\u00e7\u00e3o direta \u00e9 particularmente \u00fatil para aplicativos que exigem alta vaz\u00e3o. \u00c9 claro que h\u00e1 o risco de a grava\u00e7\u00e3o no disco falhar. Existem muitas maneiras de reduzir esse risco (exploraremos isso mais tarde), embora matematicamente, sempre haver\u00e1 um risco.<\/p>\n\n\n\n<h3 id=\"h-write-through-cache\" class=\"wp-block-heading\">Cache write-through<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Em um cache write-through, os dados s\u00e3o gravados tanto no cache quanto no armazenamento prim\u00e1rio \u201csimultaneamente\u201d (atrav\u00e9s de um mecanismo de transa\u00e7\u00e3o\/bloqueio). Essa abordagem garante a consist\u00eancia dos dados em todas as camadas de armazenamento ao custo de uma lat\u00eancia maior para opera\u00e7\u00f5es de grava\u00e7\u00e3o.<\/p>\n\n\n\n<h3 id=\"h-write-around-cache\" class=\"wp-block-heading\">Cache de escrita indireta<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O cache write-around ignora o cache inteiramente para opera\u00e7\u00f5es de escrita, armazenando dados diretamente no armazenamento prim\u00e1rio. O cache \u00e9 atualizado apenas quando os dados s\u00e3o lidos. Essa estrat\u00e9gia minimiza a sobrecarga de grava\u00e7\u00e3o no cache, mas pode levar a cache misses para dados frequentemente atualizados. O cache write-around \u00e9 adequado para cen\u00e1rios com atualiza\u00e7\u00f5es de dados infrequentes ou situa\u00e7\u00f5es em que os dados sendo gravados n\u00e3o ser\u00e3o acessados imediatamente. No geral, o cache write-around \u00e9 usado com menos frequ\u00eancia do que o write-back e o write-through.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"versus\" class=\"wp-block-heading\">Write-back vs. write-through<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O cache write-back e o cache write-through representam dois extremos do espectro em termos de velocidade e consist\u00eancia.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Write-back caching<\/strong> prioriza o desempenho ao adiar as atualiza\u00e7\u00f5es para o armazenamento prim\u00e1rio, o que reduz a lat\u00eancia de grava\u00e7\u00e3o. No entanto, o risco de perda de dados aumenta caso o cache falhe antes de sincronizar com o armazenamento.<\/li>\n\n\n\n<li><strong>Cache write-through<\/strong> enfatiza a consist\u00eancia dos dados garantindo que toda opera\u00e7\u00e3o de grava\u00e7\u00e3o atualize tanto o cache quanto o armazenamento principal. A contrapartida \u00e9 o aumento da lat\u00eancia e o potencial aumento do uso de recursos.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A escolha entre os dois depende da toler\u00e2ncia do seu aplicativo \u00e0 lat\u00eancia e \u00e0 consist\u00eancia.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"benefits\" class=\"wp-block-heading\">Benef\u00edcios e desafios do cache write-back<\/h2>\n\n\n\n<h3 id=\"h-benefits\" class=\"wp-block-heading\">Benef\u00edcios<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Desempenho de escrita aprimorado:<\/strong> Escrever dados em cache \u00e9 mais r\u00e1pido do que escrever em armazenamento prim\u00e1rio mais lento.<br>\n<strong>Tr\u00e1fego de armazenamento reduzido:<\/strong> Como as grava\u00e7\u00f5es para o armazenamento prim\u00e1rio s\u00e3o agrupadas ou atrasadas, o tr\u00e1fego geral de E\/S (entrada\/sa\u00edda) diminui, reduzindo a carga nos sistemas de armazenamento.<br>\n<strong>Desempenho de leitura aprimorado:<\/strong> Dados acessados com frequ\u00eancia permanecem no cache, acelerando as opera\u00e7\u00f5es de leitura.<\/p>\n\n\n\n<h3 id=\"h-challenges\" class=\"wp-block-heading\"> Desafios<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Riscos de consist\u00eancia de dados:<\/strong> Os dados podem ser perdidos se o cache falhar antes de sincronizar com o armazenamento.<br>\n<strong>Gerenciamento complexo de cache:<\/strong> Garantir que o cache e o armazenamento permane\u00e7am sincronizados exige tratamento de erros e monitoramento robustos, especialmente se voc\u00ea <a href=\"https:\/\/www.couchbase.com\/pt\/mongodb-redis\/\">integrar dois sistemas de dados diferentes (um banco de dados e um armazenamento de cache chave-valor separado, por exemplo)<\/a>.<br>\n<strong>Durabilidade<\/strong> Aplica\u00e7\u00f5es que exigem persist\u00eancia imediata podem considerar o write-back inadequado, a menos que existam maneiras de mitigar o risco (o que um <a href=\"https:\/\/info.couchbase.com\/rs\/302-GJY-034\/images\/High_Performance_With_Distributed_Caching_Couchbase.pdf\">sistema de cache como o Couchbase<\/a> fornece, por exemplo).<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"risks\" class=\"wp-block-heading\">E quanto aos riscos de perda de dados de write-back?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O Couchbase oferece uma arquitetura dur\u00e1vel e distribu\u00edda para reduzir o risco de perda de dados. A configura\u00e7\u00e3o padr\u00e3o no <a href=\"https:\/\/www.couchbase.com\/pt\/developers\/sdks\/\">Couchbase SDK<\/a> \u00e9 para que as grava\u00e7\u00f5es sejam totalmente ass\u00edncronas, o que significa que voc\u00ea corre o risco de perder dados se um servidor falhar. No entanto, ao simplesmente aumentar o n\u00edvel de durabilidade para \u201cmaioria\u201d, a opera\u00e7\u00e3o se torna s\u00edncrona, reduzindo o risco de perda de dados (a perda de dados resultaria de v\u00e1rios servidores falhando simultaneamente durante a opera\u00e7\u00e3o). Al\u00e9m disso, os requisitos de durabilidade podem ser aumentados para \u201cmajorityAndPersistActive\u201d e \u201cpersistToMajority\u201d. Isso torna a perda de dados ainda menos prov\u00e1vel (teria que ocorrer falha generalizada de servidores e perda de disco durante a opera\u00e7\u00e3o para perda de dados). Em qualquer uma das situa\u00e7\u00f5es acima, a perda de dados s\u00f3 ocorreria durante o evento de falha. Com durabilidade aumentada, o risco ainda existe matematicamente, da mesma forma que \u00e9 poss\u00edvel ganhar na loteria.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Essas configura\u00e7\u00f5es tamb\u00e9m aumentam a lat\u00eancia, mas em um sistema complexo, algumas opera\u00e7\u00f5es se beneficiam mais de desempenho e outras exigem mais durabilidade. O cache write-back pode priorizar certos tipos de dados (por exemplo, compras precisam da maior durabilidade e dados de log em estado est\u00e1vel t\u00eam prioridade menor). <a href=\"https:\/\/docs.couchbase.com\/server\/current\/learn\/buckets-memory-and-storage\/memory-and-storage.html\">Sistema de grava\u00e7\u00e3o do Couchbase<\/a> e <a href=\"https:\/\/docs.couchbase.com\/server\/current\/learn\/data\/durability.html\">op\u00e7\u00f5es de durabilidade<\/a> te d\u00e1 a flexibilidade que o write-through n\u00e3o oferece.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"use-cases\" class=\"wp-block-heading\">Casos de uso de cache write-back<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O cache de retorno (write-back cache) \u00e9 bem adequado para cen\u00e1rios onde o desempenho de grava\u00e7\u00e3o \u00e9 cr\u00edtico e atrasos ocasionais na consist\u00eancia s\u00e3o aceit\u00e1veis. Casos de uso incluem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/www.couchbase.com\/pt\/use-cases\/gaming\/\">Jogos<\/a> e <a href=\"https:\/\/www.couchbase.com\/pt\/use-cases\/session-management\/\">gerenciamento de sess\u00e3o do usu\u00e1rio<\/a>:<\/strong> Pode ser usado para jogos multiplayer e aplica\u00e7\u00f5es web que armazenam dados de sess\u00e3o ou de jogadores para proporcionar experi\u00eancias r\u00e1pidas com lat\u00eancia m\u00ednima.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.couchbase.com\/pt\/use-cases\/retail-and-ecommerce\/\">Sistemas de e-commerce:<\/a><\/strong> O carrinho de compras, a navega\u00e7\u00e3o, as prefer\u00eancias do usu\u00e1rio e outras opera\u00e7\u00f5es de com\u00e9rcio eletr\u00f4nico s\u00e3o armazenados em cache para velocidade, enquanto compras menos frequentes, mas mais cr\u00edticas, podem usar maior durabilidade.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.couchbase.com\/pt\/use-cases\/media-and-entertainment\/\">Plataformas de streaming de v\u00eddeo:<\/a><\/strong> Pode ser usado para armazenar em cache metadados, como hist\u00f3rico de visualiza\u00e7\u00e3o ou recomenda\u00e7\u00f5es, para acesso mais r\u00e1pido.<\/li>\n\n\n\n<li><strong>Redes sociais:<\/strong> Couchbase \u00e9 uma tecnologia central de <a href=\"https:\/\/www.couchbase.com\/pt\/customers\/linkedin\/\">Arquitetura de cache do LinkedIn<\/a>, entregando perfis e conte\u00fado de redes sociais mais rapidamente.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Um sistema de cache devidamente constru\u00eddo com uma abordagem write-back, como o Couchbase, \u00e9 bem adequado tanto para desempenho quanto para confiabilidade de dados.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:0;padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"choose\" class=\"wp-block-heading\">Escolhendo entre cache write-back e write-through<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A decis\u00e3o de usar cache write-back ou write-through depende dos requisitos da sua aplica\u00e7\u00e3o. Considere o seguinte:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Desempenho vs. durabilidade:<\/strong> Write-back \u00e9 ideal quando a velocidade de grava\u00e7\u00e3o \u00e9 uma prioridade e os riscos podem ser reduzidos (por exemplo, op\u00e7\u00f5es de durabilidade do Couchbase). Write-through pode ser adequado para sistemas onde as opera\u00e7\u00f5es de leitura superam em muito as opera\u00e7\u00f5es de grava\u00e7\u00e3o.<\/li>\n\n\n\n<li><strong>Toler\u00e2ncia a falhas:<\/strong> Sistemas com toler\u00e2ncia limitada \u00e0 perda de dados devem evitar o write-back a menos que mecanismos de redund\u00e2ncia adicionais estejam em vigor (por exemplo, a arquitetura distribu\u00edda do Couchbase).<\/li>\n\n\n\n<li><strong>Escalabilidade:<\/strong> O cache de escrita de volta \u00e9 valioso em arquiteturas onde <a href=\"https:\/\/www.couchbase.com\/pt\/resources\/concepts\/scalability-in-cloud-computing\/\">escalabilidade<\/a> \u00e9 crucial. Ao reduzir as cargas de grava\u00e7\u00e3o no armazenamento prim\u00e1rio, os sistemas podem lidar com mais usu\u00e1rios simult\u00e2neos e melhorar a responsividade.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"margin-top:0;margin-bottom:var(--wp--preset--spacing--2-xl);padding-top:var(--wp--preset--spacing--lg);padding-bottom:var(--wp--preset--spacing--lg)\">\n<h2 id=\"resources\" class=\"wp-block-heading\">Principais pontos e recursos<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cache de escrita permite escrita superior <a href=\"https:\/\/www.couchbase.com\/pt\/benchmarks\/\">desempenho<\/a> ao atrasar a sincroniza\u00e7\u00e3o com o armazenamento prim\u00e1rio, mas isso vem com riscos \u00e0 consist\u00eancia dos dados que um sistema distribu\u00eddo com op\u00e7\u00f5es de durabilidade pode resolver.<\/li>\n\n\n\n<li>O cache write-through garante a integridade dos dados escrevendo simultaneamente no cache e no armazenamento, tornando-o adequado para aplica\u00e7\u00f5es com muitas leituras onde a flexibilidade n\u00e3o \u00e9 necess\u00e1ria.<\/li>\n\n\n\n<li>Escolher a estrat\u00e9gia de cache correta exige a compreens\u00e3o das necessidades de desempenho do seu sistema, os requisitos de consist\u00eancia e a toler\u00e2ncia ao risco.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"h-suggested-next-steps\" class=\"wp-block-heading\">Pr\u00f3ximos passos sugeridos<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Explore o Couchbase <a href=\"https:\/\/www.couchbase.com\/pt\/developers\/architecture\/\">arquitetura memory-first<\/a>, que implementa estrat\u00e9gias de cache como write-back para desempenho aprimorado.<\/li>\n\n\n\n<li>Saiba mais sobre grava\u00e7\u00f5es dur\u00e1veis para mitigar riscos associados a <a href=\"https:\/\/www.couchbase.com\/pt\/caching-comparison\/\">caching<\/a>.<\/li>\n\n\n\n<li>Revise o nosso <a href=\"https:\/\/www.couchbase.com\/pt\/blog\/tag\/caching\/\">blog<\/a> e <a href=\"https:\/\/www.couchbase.com\/pt\/resources\/concepts\/\">centro de conceitos<\/a> para continuar aprendendo sobre t\u00f3picos relacionados a caching.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group alignfull wp-custom-prefooter has-peach-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group wp-custom-prefooter__inner is-layout-constrained wp-container-core-group-is-layout-32cc56da wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-a91057ef wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<div class=\"wp-block-group wp-custom-prefooter__card has-white-background-color has-background is-vertical is-layout-flex wp-container-core-group-is-layout-293b0a6d 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Deixe-nos ajudar.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\" style=\"margin-top:auto\">\n<div class=\"wp-block-button is-style-outline is-style-outline--4\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.couchbase.com\/pt\/contact\/\" title=\"Entre em contato conosco\" target=\"\">Entre em contato conosco<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Write-Back Cache Write-back cache is a caching technique where data is written to the cache first and the main storage later What is write-back cache? Write-back cache is a caching strategy that enhances system performance by temporarily storing data in a high-speed medium (typically memory) and deferring updates to the primary storage (typically disk). Unlike [&hellip;]<\/p>\n","protected":false},"author":73510,"featured_media":0,"menu_order":0,"template":"page-no-prefooter","meta":{"_acf_changed":false,"inline_featured_image":false,"_acf":"","footnotes":""},"couchbase_category":[22,23,37,18,19],"class_list":["post-684","concepts","type-concepts","status-publish","hentry","couchbase_category-analytics-use-case","couchbase_category-analytics-product-key-feature","couchbase_category-analytics-products","couchbase_category-performance","couchbase_category-technology-software-saas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Write-Back Cache | Concepts | Couchbase<\/title>\n<meta name=\"description\" content=\"Write-back cache is a caching technique where data is written to the cache first and the main storage later. 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