On Thu, 2007-09-06 at 17:53 +0300, Hannu Krosing wrote:
> Ühel kenal päeval, N, 2007-09-06 kell 16:15, kirjutas apoc9009:
> > > So you want the user to still be connected to the failed machine, but at
> > > the same time be connected to the new live failover machine ?
> > >
> > > -----
> > > Hannu
> > No.
> > The User should be connected to the running db without restrictions
> > while backup is in progress
>
> And what's wrong with WAL-based backup then ?
>
> Especially the variant described in 23.4.4 wich keeps the WAL copied to
> backup machine up to last second ?
I think the OP means
- synchronous replication
- ability to access the standby node for queries
Yes, both requests are planned for later releases.
Bruce, can we edit the TODO to include a section called "High
Availability"?
We already have a few scattered references to such things, but in Admin
and WAL. We need a specific section.
We currently have these items, that can be moved to the new section:
- Allow a warm standby system to also allow read-only statements
- Allow WAL traffic to be streamed to another server for stand-by
replication
new section would look like this:
High Availability
-----------------
- Allow a warm standby system to also allow read-only statements
- Allow WAL traffic to be streamed to another server for stand-by
replication (synchronous/asynchronous options)
- Improve scalability of recovery for large I/O bound databases
-- Simon Riggs 2ndQuadrant http://www.2ndQuadrant.com