Ben Johnson, autor do armazenamento NoSQL BoltDB, apresentou o projeto Litestream, que fornece uma camada para organizar a replica\u00e7\u00e3o de dados no SQLite. O Litestream n\u00e3o requer altera\u00e7\u00f5es no SQLite e pode funcionar com quaisquer aplicativos que utilizem esta biblioteca. A replica\u00e7\u00e3o \u00e9 realizada por um processo em segundo plano separado, que monitora as altera\u00e7\u00f5es nos arquivos do banco de dados e as transfere para outro arquivo ou para um armazenamento externo. O c\u00f3digo do projeto est\u00e1 escrito na linguagem Go e \u00e9 distribu\u00eddo sob a licen\u00e7a Apache 2.0. <\/p>\n
Toda a intera\u00e7\u00e3o com o banco de dados \u00e9 realizada atrav\u00e9s da API padr\u00e3o do SQLite, ou seja, o Litestream n\u00e3o interfere diretamente no funcionamento, n\u00e3o afeta o desempenho e n\u00e3o pode danificar o conte\u00fado do banco de dados, o que distingue o Litestream de solu\u00e7\u00f5es como Rqlite e Dqlite. As altera\u00e7\u00f5es s\u00e3o rastreadas por meio da ativa\u00e7\u00e3o do log WAL (\"Write-Ahead Log\") no SQLite. Para economizar espa\u00e7o de armazenamento, o sistema periodicamente agrega o fluxo de altera\u00e7\u00f5es em fatias (snapshots) do banco de dados, sobre as quais come\u00e7am a se acumular outras modifica\u00e7\u00f5es. O tempo de cria\u00e7\u00e3o das fatias \u00e9 especificado nas configura\u00e7\u00f5es; por exemplo, \u00e9 poss\u00edvel criar fatias uma vez por dia ou uma vez por hora. <\/p>\n
As principais \u00e1reas de aplica\u00e7\u00e3o do Litestream incluem a organiza\u00e7\u00e3o de backups seguros e a distribui\u00e7\u00e3o da carga de leitura em v\u00e1rios servidores<\/a>. O fluxo de altera\u00e7\u00f5es pode ser transferido para armazenamentos como Amazon S3, Azure Blob Storage, Backblaze B2, DigitalOcean Spaces, Scaleway Object Storage, Google Cloud Storage, Linode Object Storage ou para qualquer host externo que suporte o protocolo SFTP. Em caso de dano ao conte\u00fado do banco de dados principal, um backup pode ser restaurado para um estado correspondente a um determinado momento, altera\u00e7\u00e3o espec\u00edfica, \u00faltima altera\u00e7\u00e3o ou snapshot definido. \u0411\u0435\u043d \u0414\u0436\u043e\u043d\u0441\u043e\u043d (Ben Johnson), \u0430\u0432\u0442\u043e\u0440 NoSQL-\u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 BoltDB, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043f\u0440\u043e\u0435\u043a\u0442 Litestream, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u043d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0443 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 SQLite. Litestream \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 SQLite \u0438 \u043c\u043e\u0436\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u043b\u044e\u0431\u044b\u043c\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u043c\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u043c\u0438 \u0434\u0430\u043d\u043d\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443. \u0420\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0435\u0439 \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442\u0441\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0439 \u0444\u043e\u043d\u043e\u0432\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"