| From: | "Joshua D(dot) 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: | 2005-04-24 18:01:28 |
| Message-ID: | 426BDEF8.6000709@commandprompt.com |
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| Thread: | |
| Lists: | pgsql-hackers pgsql-patches |
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 we
do use a transaction log shipping method. So the implementation is
almost the same.
Sincerely,
Joshua D. Drake
Command Prompt, Inc.
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