Re: Cluster/Replication

cho wrote:
> Le Fri, 19 Oct 2007 12:43:40 -0400, Sean Brown a écrit :
>
> Have a look at pgpool-I or pgpool-II in replication mode.
> Pgpool proxies SQL requests, so that requests on one server are replayed
> on the other. pgpool-I is limited to two nodes, whereas pgpool-II is not.
> Latency is important for write performance. You can do failover, you just
> need to detect by yourself when one node is dead.
>
> There is also PITR recovery, but as it batches the transaction logs you
> may lose a bit of data (up to a configured data size / duration).
>
>
PITR does not allow for the 'slave' server to be on-line, meaning you
can't do SELECTs on the slave while shipping WALs.

    Mike