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Re: Constant WAL replay
- From: "Joshua D. Drake" <jd(at)commandprompt(dot)com>
- To: Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl>
- Cc: Hans-Jürgen Schönig <postgres(at)cybertec(dot)at>, pgsql-hackers(at)postgresql(dot)org, eg(at)cybertec(dot)at
- Subject: Re: Constant WAL replay
- Date: Sun, 24 Apr 2005 11:01:28 -0700
- Message-id: <426BDEF8(dot)6000709(at)commandprompt(dot)com>
Alvaro Herrera wrote:
On Sun, Apr 24, 2005 at 08:10:34AM +0200, Hans-Jürgen Schönig wrote:The idea: We are looking for a way to implement a synchronous single-master / multiple slaves systems. Meanwhile we are able to serialize / deserialize WAL records and send them to a group communication system which transports those records to the slave database.This is not hard to do.In fact, I believe Command Prompt's Mammoth Replicator does exactly this.
Very close. We don't use the WAL (yet, slated for probably 8.1) but wedo use a transaction log shipping method. So the implementation is almost the same.
Sincerely, Joshua D. Drake Command Prompt, Inc.
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