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From: Markus Schiltknecht <[email protected]>
To: =?ISO-8859-1?Q?Jos=E9_Orlando_Pereira?= <[email protected]>
Cc: [email protected]
Cc: PostgreSQL-documentation <[email protected]>
Subject: Re: PostgreSQL Documentation of High Availability and Load Balancing
Date: Mon, 20 Nov 2006 15:52:16 +0100
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>

Hello Jose,

José Orlando Pereira wrote:
> Hi,
> 
> Thanks for the heads up. I mostly agree with the text (except maybe the 
> paragraph on Oracle RAC and 2PC).

Hm, what's wrong with that? Okay, we should better not mention Oracle 
RAC there, but it is a product doing 'Multi-Master Replication Using 
Clustering', isn't it?

> Regarding GORDA, I would not try to fit it into existing bullets, as our 
> current prototype implements several variations of query broadcasting, 
> multi-master and master/slave, although none with production quality.

AFAIK, we want to help the users to get a general understanding about 
replication, high availability and load balancing. So as to give them a 
good starting point on their search for a solution to their problem(s).

Thus it's okay if you say GORDA is prototyping several of the algorithms 
mentioned. I just would like to make sure that the descriptions are 
general enough to be appropriate for most implementations.

For example, recently Josh Berkus proposed, that 'statement-based 
replication' was the more common term for 'query broadcasting'. Do you 
agree with that? What did you call it? Does the description fit?

> Instead, I'd point out PostgreSQL's friendliness to research and the resulting 
> prototypes that stem from academia. This can help to draw community attention 
> to our efforts.

Thank you for your suggestions. And I'm glad you're seeing PostgreSQL 
that way. But I think your additions don't quite fit into the 
documentation because they are too promotional.

I should probably have given some more details about previous 
discussions. One consensus we've reached was, that we don't want to keep 
a quickly changing list of open source projects in our documentation. So 
probably nether GORDA nor Postgres-R will get mentioned there.

But for sure we'll compile a list of available replication solutions 
*somewhere* on the website, where we can change it as often as we want. 
I'm sure GORDA will get mentioned there.

@pgsql-docs: BTW, what's the state on that one? Or do I have to ask that 
on -www?

Regards

Markus

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