Re: [HACKERS] Replication documentation addition - Mailing list pgsql-docs

From Jim Nasby
Subject Re: [HACKERS] Replication documentation addition
Date
Msg-id EE16DB51-3C5E-4A18-BA5E-E7EB60853194@decibel.org
Whole thread Raw
In response to Re: [HACKERS] Replication documentation addition  (Bruce Momjian <bruce@momjian.us>)
Responses Re: [HACKERS] Replication documentation addition
Re: [HACKERS] Replication documentation addition
List pgsql-docs
On Nov 14, 2006, at 5:11 PM, Bruce Momjian wrote:
> Basically, when you are broadcasting outside the server, you are
> broadcasting SQL queries, and those queries do not have information
> about non-deterministic functions and have issues with universal
> commits
> on all node.

That's true of simple query broadcasting (ie: pgpool), but not true
of Continuent/Sequoia. Continuent's software adds a lot of additional
features on top of simple query broadcasting, making it far more
robust than simply spewing queries out to every node in the cluster.
You still have to be very careful with how you use it, but not nearly
as much as with simpler solutions.
--
Jim Nasby                                            jim@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)



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