Thomas Hallgren wrote:
> Master + read-only slaves:
> - Slony-I when all sites are trusted
> - dbMirror for untrusted slaves and/or table based master slave
> assignment - Mammoth Replicator, proprietary ???
> - erServer ???
That begs the question in turn why there are so many master/slave
replication solutions. I mean, I don't care, but this categorization
doesn't really answer the original question.
> Multi-master:
> - C-JDBC, Will be transaction safe once PostgreSQL has XA
> - pgPool, not transaction safe ???
These are not multimaster solutions in the sense that you can write to
any one of multiple hosts. In a sense, they are really master/slave
solutions with the program components distributed differently. To
write, you always have to go through one host.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
