{"id":104224,"date":"2022-06-02T15:37:06","date_gmt":"2022-06-02T13:37:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-ferretdb-0-3-realizaczii-mongodb-na-baze-subd-postgresql"},"modified":"2022-06-02T15:37:06","modified_gmt":"2022-06-02T13:37:06","slug":"vypusk-ferretdb-0-3-realizaczii-mongodb-na-baze-subd-postgresql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-ferretdb-0-3-realizaczii-mongodb-na-baze-subd-postgresql","title":{"rendered":"Lan\u00e7amento do FerretDB 0.3, implementa\u00e7\u00e3o do MongoDB com base no SGBD PostgreSQL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Foi publicado o lan\u00e7amento do projeto FerretDB 0.3, que permite substituir o SGBD orientado a documentos MongoDB pelo PostgreSQL sem alterar o c\u00f3digo dos aplicativos. O FerretDB \u00e9 implementado como um servidor proxy, traduzindo as chamadas ao MongoDB em consultas SQL para o PostgreSQL, permitindo o uso do PostgreSQL como o verdadeiro reposit\u00f3rio. O c\u00f3digo \u00e9 escrito na linguagem Go e \u00e9 distribu\u00eddo sob a licen\u00e7a Apache 2.0. <\/p>\n

A necessidade de migra\u00e7\u00e3o pode surgir devido \u00e0 transi\u00e7\u00e3o do MongoDB para uma licen\u00e7a n\u00e3o livre, SSPL, que se baseia na licen\u00e7a AGPLv3, mas n\u00e3o \u00e9 aberta, pois cont\u00e9m uma exig\u00eancia discriminat\u00f3ria de fornecimento sob a licen\u00e7a SSPL n\u00e3o apenas do c\u00f3digo do pr\u00f3prio aplicativo, mas tamb\u00e9m dos textos-fonte de todos os componentes envolvidos na presta\u00e7\u00e3o do servi\u00e7o em nuvem. <\/p>\n

O principal p\u00fablico-alvo do FerretDB s\u00e3o os usu\u00e1rios que n\u00e3o utilizam em seus aplicativos as funcionalidades avan\u00e7adas do MongoDB, mas desejam usar uma pilha de software completamente aberta. Neste est\u00e1gio de desenvolvimento, o FerretDB suporta apenas parte das funcionalidades do MongoDB mais comumente usadas em aplicativos t\u00edpicos. No futuro, planejam alcan\u00e7ar a plena compatibilidade com os drivers do MongoDB e oferecer a possibilidade de usar o FerretDB como uma substitui\u00e7\u00e3o transparente do MongoDB. <\/p>\n

O MongoDB ocupa um nicho entre sistemas r\u00e1pidos e escal\u00e1veis que operam dados em formato chave\/valor e SGBDs relacionais, funcionais e convenientes para formar consultas. O MongoDB suporta o armazenamento de documentos em formato semelhante ao JSON, possui uma linguagem bastante flex\u00edvel para formar consultas, pode criar \u00edndices para v\u00e1rios atributos armazenados, garante efetivamente o armazenamento de grandes objetos bin\u00e1rios, suporta o registro de opera\u00e7\u00f5es de altera\u00e7\u00e3o e adi\u00e7\u00e3o de dados no BD, pode operar de acordo com a paradigma Map\/Reduce e suporta replica\u00e7\u00e3o e constru\u00e7\u00e3o de configura\u00e7\u00f5es tolerantes a falhas. <\/p>\n

No lan\u00e7amento do FerretDB 0.3, foi implementado o comando findAndModify, que altera um documento, mas retorna sua vers\u00e3o original. Foram implementados operadores de atualiza\u00e7\u00e3o de campos \u2014 $inc e $set. Adicionada suporte para ordena\u00e7\u00e3o de tipos de dados escalares.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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