Re: Synchronization levels in SR

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От Kevin Grittner
Тема Re: Synchronization levels in SR
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Msg-id 4BFD0FAE0200002500031B0A@gw.wicourts.gov
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Ответ на Re: Synchronization levels in SR  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Ответы Re: Synchronization levels in SR  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Re: Synchronization levels in SR  (Simon Riggs <simon@2ndQuadrant.com>)
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Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> wrote:
> One way to do that would be to refrain from flushing the commit
> record to disk on the master until the standby has acknowledged
> it.
I'm not clear on the benefit of doing that, versus flushing the
commit record and then waiting for responses.  Either way some
databases will commit before others -- what is the benefit of having
the master lag?
> Adding a synchronous standby should require some action in the 
> master, since it affects the behavior on master.
+1
-Kevin


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