Re: Hot Standby query cancellation and Streaming Replication integration

Greg Smith wrote:
> Joshua D. Drake wrote:
> > On Sat, 27 Feb 2010 00:43:48 +0000, Greg Stark <gsstark@mit.edu> wrote:
> >   
> >> I want my ability to run large batch queries without any performance
> >> or reliability impact on the primary server.
> >>     
> >
> > +1
> >
> > I can use any number of other technologies for high availability.
> >   
> 
> Remove "must be an instant-on failover at the same time" from the 
> requirements and you don't even need 9.0 to handle that, this has been a 
> straightforward to solve problem since 8.2.  It's the combination of HA 
> and queries that make things hard to do.
> 
> If you just want batch queries on another system without being concerned 
> about HA at the same time, the first option is to just fork the base 
> backup and WAL segment delivery to another server and run queries there.

That is a lot of administrative overhead. It is hard to say it is
equivalent to HS.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
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