Foi lan\u00e7ado o Node.js 19.0, uma plataforma para execu\u00e7\u00e3o de aplicativos de rede em JavaScript. O Node.js 19 pertence ao ramo com suporte regular, com atualiza\u00e7\u00f5es que ser\u00e3o lan\u00e7adas at\u00e9 junho de 2023. Nos pr\u00f3ximos dias, a estabiliza\u00e7\u00e3o do ramo Node.js 18 ser\u00e1 conclu\u00edda, recebendo o status LTS, que ser\u00e1 mantido at\u00e9 abril de 2025. O suporte \u00e0 antiga vers\u00e3o LTS Node.js 16.0 continuar\u00e1 at\u00e9 setembro de 2023, e \u00e0 vers\u00e3o LTS anterior 14.0 at\u00e9 abril de 2023. <\/p>\n
Principais melhorias: <\/p>\n
A plataforma Node.js pode ser utilizada tanto para suporte do lado do servidor de aplica\u00e7\u00f5es web quanto para criar programas de rede comuns tanto do lado do cliente quanto do servidor. Para expandir a funcionalidade das aplica\u00e7\u00f5es Node.js, foi preparada uma grande cole\u00e7\u00e3o de m\u00f3dulos, onde \u00e9 poss\u00edvel encontrar m\u00f3dulos com implementa\u00e7\u00f5es servidores<\/a> e clientes HTTP, SMTP, XMPP, DNS, FTP, IMAP, POP3, m\u00f3dulos para integra\u00e7\u00e3o com diversos frameworks web, manipuladores WebSocket e Ajax, conectores a bancos de dados (MySQL, PostgreSQL, SQLite, MongoDB), motores de template, motores CSS, implementa\u00e7\u00f5es de algoritmos de criptografia e sistemas de autoriza\u00e7\u00e3o (OAuth), parsers XML. <\/p>\n Para garantir o processamento de um grande n\u00famero de solicita\u00e7\u00f5es paralelas, o Node.js utiliza um modelo ass\u00edncrono de execu\u00e7\u00e3o de c\u00f3digo, baseado em processamento de eventos em modo n\u00e3o bloqueante e determina\u00e7\u00e3o de manipuladores de callback. Como m\u00e9todos de multiplexa\u00e7\u00e3o de conex\u00f5es, s\u00e3o suportados m\u00e9todos como epoll, kqueue, \/dev\/poll e select. Para a multiplexa\u00e7\u00e3o de conex\u00f5es, usa-se a biblioteca libuv, que \u00e9 uma camada de abstra\u00e7\u00e3o sobre libev em sistemas Unix e sobre IOCP no Windows. Para criar um pool de threads, a biblioteca libeio \u00e9 utilizada, e para a execu\u00e7\u00e3o de consultas DNS de maneira n\u00e3o bloqueante, o c-ares foi integrado. Todas as chamadas de sistema que causam bloqueio s\u00e3o executadas dentro do pool de threads e, assim como os manipuladores de sinais, transmitem o resultado de seu trabalho de volta atrav\u00e9s de um canal n\u00e3o nomeado (pipe). A execu\u00e7\u00e3o de c\u00f3digo JavaScript \u00e9 garantida pela utiliza\u00e7\u00e3o do mecanismo V8 desenvolvido pela Google (adicionalmente, a Microsoft desenvolve uma vers\u00e3o do Node.js com o mecanismo Chakra-Core). <\/p>\n Essencialmente, o Node.js \u00e9 semelhante a frameworks como Perl AnyEvent, Ruby Event Machine e Python Twisted, al\u00e9m da implementa\u00e7\u00e3o de eventos em Tcl, mas o ciclo de processamento de eventos (event loop) no Node.js \u00e9 oculto do desenvolvedor e se assemelha ao manuseio de eventos em uma aplica\u00e7\u00e3o web rodando em um navegador. Ao escrever aplica\u00e7\u00f5es para Node.js, deve-se considerar a especificidade da programa\u00e7\u00e3o orientada a eventos; por exemplo, em vez de executar «var result = db.query(«select..»);» com a expectativa de que a opera\u00e7\u00e3o seja conclu\u00edda antes de processar os resultados, no Node.js utiliza-se o princ\u00edpio de execu\u00e7\u00e3o ass\u00edncrona, ou seja, o c\u00f3digo \u00e9 transformado em «db.query(«select..», function (result) {processamento do resultado});», onde o controle \u00e9 imediatamente transferido para o c\u00f3digo posterior, enquanto o resultado da consulta \u00e9 processado \u00e0 medida que os dados chegam. \u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 19.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. Node.js 19 \u043e\u0442\u043d\u0435\u0441\u0451\u043d \u043a \u0432\u0435\u0442\u043a\u0435 \u0441 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0438\u044e\u043d\u044f 2023 \u0433\u043e\u0434\u0430. \u0412 \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0438\u0435 \u0434\u043d\u0438 \u0431\u0443\u0434\u0435\u0442 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0432\u0435\u0442\u043a\u0438 Node.js 18, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442 \u0441\u0442\u0430\u0442\u0443\u0441 LTS \u0438 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2025 \u0433\u043e\u0434\u0430. \u0421\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 Node.js 16.0 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105331","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Plataforma de JavaScript para servidores Node.js 19.0 dispon\u00edvel | ProHoster","description":"Foi lan\u00e7ado o Node.js 19.0, uma plataforma para executar aplica\u00e7\u00f5es de rede em JavaScript. O Node.js 19 pertence \u00e0 linha com suporte padr\u00e3o, com atualiza\u00e7\u00f5es programadas at\u00e9 junho de 2023.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/dostupna-servernaya-javascript-platforma-node-js-19-0","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u0430\u044f JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430 Node.js 19.0 | ProHoster","og:description":"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 19.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. Node.js 19 \u043e\u0442\u043d\u0435\u0441\u0451\u043d \u043a \u0432\u0435\u0442\u043a\u0435 \u0441 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0438\u044e\u043d\u044f 2023 \u0433\u043e\u0434\u0430.","og:url":"https:\/\/prohoster.info\/pt\/blog\/news\/dostupna-servernaya-javascript-platforma-node-js-19-0","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-10-19T07:36:47+00:00","article:modified_time":"2022-10-19T07:36:47+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"105331","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-09 16:51:20","updated":"2026-02-22 15:31:03","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/105331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/comments?post=105331"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/105331\/revisions"}],"predecessor-version":[{"id":162391,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/105331\/revisions\/162391"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/media?parent=105331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/categories?post=105331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/tags?post=105331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"