On Fri, Nov 13, 2009 at 10:58 AM, Aidan Van Dyk <aidan@highrise.ca> wrote:
> * Fujii Masao <masao.fujii@gmail.com> [091112 20:52]:
>
>> Personally, I think that
>> semi-synchronous replication is sufficient for HA.
>
> Often, but that's not synchronous replication so don't call it such...
Hmm, though I'm not sure about your definition of "synchronous",
if the primary waits for a *redo* ACK from the standby before
returning a "success" of a transaction to a client, you can call
SR synchronous?
This is one of TODO items of SR for v8.5.
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
