Re: Synchronization levels in SR - Mailing list pgsql-hackers

From Markus Wanner
Subject Re: Synchronization levels in SR
Date
Msg-id 4C8785E7.8070803@bluegap.ch
Whole thread Raw
In response to Re: Synchronization levels in SR  (Boszormenyi Zoltan <zb@cybertec.at>)
List pgsql-hackers
On 09/08/2010 12:04 PM, Boszormenyi Zoltan wrote:
> Then there is no use to implement individual sync/async
> replicated transactions, period.

I disagree. Different transactions have different priorities for latency 
vs. failure-resistance.

> An async replicated transaction
> that waits for a sync replicated transaction because of locks
> will become implicitely sync.

Sure. But how often do your transactions wait for another one because of 
locks? What do we have MVCC for?

Regards

Markus Wanner


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