Comment Re:Without wishing to start a flamewar... (Score 2, Informative) 127
Right now there is no equivalent for Postgres. Best you can do is use Slony for creating read only replicas and then send any write queries to the master database. Heres a link (though slightly old) explaining the situation.
http://brianray.chipy.org/postgreSQL/cluster_vs_re plication.html.
Not much has changed since then. I do think there are some 3rd party commercial apps that handle master-master replication or even shared storage but thats about it.
http://brianray.chipy.org/postgreSQL/cluster_vs_r
Not much has changed since then. I do think there are some 3rd party commercial apps that handle master-master replication or even shared storage but thats about it.