{"id":103903,"date":"2022-04-28T09:37:32","date_gmt":"2022-04-28T07:37:32","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-subd-redis-7-0"},"modified":"2022-04-28T09:37:32","modified_gmt":"2022-04-28T07:37:32","slug":"vypusk-subd-redis-7-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-subd-redis-7-0","title":{"rendered":"Lan\u00e7amento do SGBD Redis 7.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ado o Redis 7.0, um sistema de gerenciamento de banco de dados do tipo NoSQL. O Redis oferece funcionalidades para armazenar dados no formato chave\/valor, com suporte adicional para formatos de dados estruturados, como listas, hashes e conjuntos, al\u00e9m da possibilidade de executar scripts de manipuladores em lua no lado do servidor. O c\u00f3digo do projeto \u00e9 distribu\u00eddo sob a licen\u00e7a BSD. M\u00f3dulos adicionais que oferecem recursos avan\u00e7ados para usu\u00e1rios corporativos, como RediSearch, RedisGraph, RedisJSON, RedisML, RedisBloom, s\u00e3o fornecidos desde 2019 sob a licen\u00e7a propriet\u00e1ria RSAL. O desenvolvimento de vers\u00f5es abertas desses m\u00f3dulos sob a licen\u00e7a AGPLv3 foi tentado pelo projeto GoodFORM, que recentemente est\u00e1 em estagna\u00e7\u00e3o.      <\/p>\n<p>Ao contr\u00e1rio dos sistemas de armazenamento em mem\u00f3ria, como o Memcached, o Redis garante o armazenamento persistente de dados no disco e a integridade do banco de dados em caso de falhas. Os c\u00f3digos fonte do projeto s\u00e3o distribu\u00eddos sob a licen\u00e7a BSD. Bibliotecas clientes est\u00e3o dispon\u00edveis para a maioria das linguagens populares, incluindo Perl, Python, PHP, Java, Ruby e Tcl. O Redis suporta transa\u00e7\u00f5es que permitem executar um conjunto de comandos em uma \u00fanica etapa, garantindo a consist\u00eancia e a sequ\u00eancia (comandos de outras requisi\u00e7\u00f5es n\u00e3o podem interferir) na execu\u00e7\u00e3o do conjunto de comandos designado, e em caso de problemas permite reverter as altera\u00e7\u00f5es. Todos os dados s\u00e3o totalmente armazenados em mem\u00f3ria.     <\/p>\n<p>Para o gerenciamento de dados, s\u00e3o fornecidos comandos como incremento\/decremento, opera\u00e7\u00f5es padr\u00e3o em listas e conjuntos (uni\u00e3o, interse\u00e7\u00e3o), renomea\u00e7\u00e3o de chaves, sele\u00e7\u00f5es m\u00faltiplas e fun\u00e7\u00f5es de ordena\u00e7\u00e3o. Dois modos de armazenamento s\u00e3o suportados: sincroniza\u00e7\u00e3o peri\u00f3dica de dados no disco e manuten\u00e7\u00e3o de um log de altera\u00e7\u00f5es no disco. No segundo caso, \u00e9 garantida a preserva\u00e7\u00e3o completa de todas as altera\u00e7\u00f5es. \u00c9 poss\u00edvel organizar replica\u00e7\u00e3o de dados master-slave em v\u00e1rios <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/server\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1636\">servidores<\/a>, executado em modo n\u00e3o bloqueante. Tamb\u00e9m est\u00e1 dispon\u00edvel o modo de troca de mensagens \"publica\u00e7\u00e3o\/assinatura\", onde um canal \u00e9 criado e as mensagens desse canal s\u00e3o distribu\u00eddas para os clientes por assinatura.    <\/p>\n<p>Mudan\u00e7as principais no Redis 7.0:   <\/p>\n<ul>\n<li class=\"l\"> Suporte adicionado para fun\u00e7\u00f5es executadas no lado <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/server\/dts-los-angeles\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3802\">servidor<\/a>. Ao contr\u00e1rio dos scripts anteriormente suportados na linguagem Lua, as fun\u00e7\u00f5es n\u00e3o est\u00e3o ligadas ao aplicativo e visam implementar l\u00f3gica adicional que expande as capacidades do servidor. As fun\u00e7\u00f5es s\u00e3o processadas de maneira integrada com os dados e em rela\u00e7\u00e3o ao banco de dados, e n\u00e3o ao aplicativo, incluindo replica\u00e7\u00e3o e armazenamento em armazenamento permanente.\n<li class=\"l\"> Foi proposta uma segunda edi\u00e7\u00e3o do ACL, que permite gerenciar o acesso a dados com base em chaves e admite a defini\u00e7\u00e3o de diferentes conjuntos de regras de acesso a comandos com a possibilidade de vincular v\u00e1rios seletores (conjuntos de permiss\u00f5es) a cada usu\u00e1rio. Cada chave pode ser associada a certas permiss\u00f5es, por exemplo, \u00e9 poss\u00edvel restringir o acesso apenas para leitura ou grava\u00e7\u00e3o de um subconjunto espec\u00edfico de chaves.\n<li class=\"l\"> Foi fornecida uma implementa\u00e7\u00e3o sequencial (sharded) que funciona em cluster do paradigma de publica\u00e7\u00e3o por assinatura (Publish-Subscribe), onde uma mensagem \u00e9 enviada a um n\u00f3 espec\u00edfico ao qual o canal de mensagens est\u00e1 vinculado, e depois essa mensagem \u00e9 redirecionada para os outros n\u00f3s que pertencem \u00e0 se\u00e7\u00e3o (shard). Os clientes podem receber mensagens assinando o canal, tanto conectando-se ao n\u00f3 principal quanto aos n\u00f3s secund\u00e1rios da se\u00e7\u00e3o. O controle \u00e9 feito atrav\u00e9s dos comandos SSUBSCRIBE, SUNSUBSCRIBE e SPUBLISH.\n<li class=\"l\"> Adicionada a capacidade de manipula\u00e7\u00e3o de subcomandos na maioria dos contextos.\n<li class=\"l\"> Novos comandos foram adicionados:\n<ul>\n<li class=\"l\"> ZMPOP, BZMPOP.\n<li class=\"l\"> LMPOP, BLMPOP.\n<li class=\"l\"> SINTERCARD, ZINTERCARD.\n<li class=\"l\"> SPUBLISH, SSUBSCRIBE, SUNSUBSCRIBE, PUBSUB SHARDCHANNELS\/SHARDNUMSUB.\n<li class=\"l\"> EXPIRETIME, PEXPIRETIME.\n<li class=\"l\"> EVAL_RO, EVALSHA_RO, SORT_RO.\n<li class=\"l\"> FUNCTION *, FCALL, FCALL_RO.\n<li class=\"l\"> COMMAND DOCS, COMMAND LIST.\n<li class=\"l\"> LATENCY HISTOGRAM.\n<li class=\"l\"> CLUSTER SHARDS, CLUSTER LINKS, CLUSTER DELSLOTSRANGE, CLUSTER ADDSLOTSRANGE.\n<li class=\"l\"> CLIENT NO-EVICT.\n<li class=\"l\"> ACL DRYRUN.    <\/ul>\n<li class=\"l\"> Foi fornecida a possibilidade de processar v\u00e1rias configura\u00e7\u00f5es em uma \u00fanica chamada CONFIG SET\/GET.\n<li class=\"l\"> Adicionadas op\u00e7\u00f5es &#171;&#8212;json&#187;, &#171;-2&#187;, &#171;&#8212;scan&#187; e &#171;&#8212;functions-rdb&#187; ao utilit\u00e1rio redis-cli.\n<li class=\"l\"> Por padr\u00e3o, o acesso dos clientes \u00e0s configura\u00e7\u00f5es e comandos que afetam a seguran\u00e7a est\u00e1 desativado (por exemplo, os comandos DEBUG e MODULE est\u00e3o desabilitados, e as altera\u00e7\u00f5es nas configura\u00e7\u00f5es com a flag PROTECTED_CONFIG s\u00e3o proibidas). A sa\u00edda para o arquivo de hist\u00f3rico de comandos que cont\u00e9m dados confidenciais foi descontinuada no redis-cli.\n<li class=\"l\"> Foi realizada uma grande quantidade de otimiza\u00e7\u00f5es voltadas para aumentar a performance e reduzir o consumo de mem\u00f3ria. Por exemplo, o consumo de mem\u00f3ria foi significativamente reduzido ao ativar o modo de cluster, ao executar opera\u00e7\u00f5es de copy-on-write e ao trabalhar com hashes e chaves zset. A l\u00f3gica de grava\u00e7\u00e3o de dados no disco (chamada de fsync) foi aprimorada. O n\u00famero de pacotes de rede e chamadas de sistema ao enviar respostas ao cliente foi reduzido. A efici\u00eancia da replica\u00e7\u00e3o foi aumentada.\n<li class=\"l\"> A vulnerabilidade CVE-2022-24735 no ambiente de execu\u00e7\u00e3o de scripts Lua foi corrigida, permitindo a substitui\u00e7\u00e3o do pr\u00f3prio c\u00f3digo Lua e a execu\u00e7\u00e3o do mesmo no contexto de outro usu\u00e1rio, incluindo aqueles com privil\u00e9gios mais altos.\n<li class=\"l\"> A vulnerabilidade CVE-2022-24736 foi corrigida, que permitia a finaliza\u00e7\u00e3o abrupta do processo redis-server devido \u00e0 desreferencia\u00e7\u00e3o de um ponteiro nulo. O ataque era realizado atrav\u00e9s do carregamento de scripts Lua especialmente formatados.    <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57100\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0421\u0423\u0411\u0414 Redis 7.0, \u043e\u0442\u043d\u043e\u0441\u044f\u0449\u0435\u0439\u0441\u044f \u043a \u043a\u043b\u0430\u0441\u0441\u0443 NoSQL-\u0441\u0438\u0441\u0442\u0435\u043c. Redis \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 \u043a\u043b\u044e\u0447\/\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0444\u043e\u0440\u043c\u0430\u0442\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0441\u043f\u0438\u0441\u043a\u0438, \u0445\u044d\u0448\u0438 \u0438 \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0432-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Lua. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043c\u043e\u0434\u0443\u043b\u0438, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0442\u0441\u044f \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u043a\u043e\u0440\u043f\u043e\u0440\u0430\u0442\u0438\u0432\u043d\u044b\u0445 [&hellip;]<\/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-103903","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0421\u0423\u0411\u0414 Redis 7.0, \u043e\u0442\u043d\u043e\u0441\u044f\u0449\u0435\u0439\u0441\u044f \u043a \u043a\u043b\u0430\u0441\u0441\u0443 NoSQL-\u0441\u0438\u0441\u0442\u0435\u043c.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri 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