Re: performance hit for replication

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: matt(at)followers(dot)net
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: performance hit for replication
Date: 2005-04-12 16:37:01
Message-ID: 425BF92D.6060004@commandprompt.com
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>So, my question is this: My server currently works great, performance wise.
>I need to add fail-over capability, but I'm afraid that introducing a
>stressful task such as replication will hurt my server's performance. Is
>there any foundation to my fears? I don't need to replicate the archived log
>data because I can easily restore that in a separate step from the nightly
>backup if disaster occurs. Also, my database load is largely selects. My
>application works great with PostgreSQL 7.3 and 7.4, but I'm currently using
>7.3.
>
>I'm eager to hear your thoughts and experiences,
>
>
Well with replicator you are going to take a pretty big hit initially
during the full
sync but then you could use batch replication and only replicate every
2-3 hours.

I am pretty sure Slony has similar capabilities.

Sincerely,

Joshua D. Drake

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