Olá, Um beta MUITO interessante que tem futuro. Unlike trigger-based solutions it relies on the write-ahead log PostgreSQL already produces to provide the sequence of changes to replicate, so it isn't subject to write multiplication effects.
Existem restrições, mas ainda assim é bem interessante. BDR is not “clustering” as some vendors use the term, in that it doesn't have a distributed lock manager, global transaction co-ordinator, etc. Each member server is separate yet connected, with design choices that allow separation between nodes that would not be possible with global transaction coordination. Each node has a local copy of the data on all the other nodes and queries run locally on individual nodes. Each node is internally consistent at all times; the group of servers as a whole is eventually-consistent. Some cross-database co-ordination features are provided in the form of distributed global sequences, synchronisation functions and conflict handlers. Some cross-database co-ordination features are provided in the form of distributed global sequences, synchronisation functions and conflict handlers. http://evol-monkey.blogspot.com.br/2014/08/postgresql-bi-directional-replication.html?m=1 http://wiki.postgresql.org/wiki/BDR_User_Guide Usa um plugin novo do postgresql http://wiki.postgresql.org/wiki/Logical_Log_Streaming_Replication Saiba mais: http://wiki.postgresql.org/wiki/BDR_Project Boa sorte. -- André Felipe Machado CEAGO/COTSC/COSTE As Lou Gerstner, former Chairman and CEO of IBM, observed: 'I came to see, in my time at IBM that culture isn’t just one aspect of the game; it *IS* the game.' ------------- - "Esta mensagem do SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO), empresa pública federal regida pelo disposto na Lei Federal nº 5.615, é enviada exclusivamente a seu destinatário e pode conter informações confidenciais, protegidas por sigilo profissional. Sua utilização desautorizada é ilegal e sujeita o infrator às penas da lei. Se você a recebeu indevidamente, queira, por gentileza, reenviá-la ao emitente, esclarecendo o equívoco." "This message from SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO) -- a government company established under Brazilian law (5.615/70) -- is directed exclusively to its addressee and may contain confidential data, protected under professional secrecy rules. Its unauthorized use is illegal and may subject the transgressor to the law's penalties. If you're not the addressee, please send it back, elucidating the failure." _______________________________________________ Portal do CISL: www.softwarelivre.gov.br _______________________________________________ Cisl-comunidade mailing list [email protected] http://listas.softwarelivre.org/cgi-bin/mailman/listinfo/cisl-comunidade
