Re: Improving compressibility of WAL files

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: "Simon Riggs" <simon(at)2ndQuadrant(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "Greg Smith" <gsmith(at)gregsmith(dot)com>, "Aidan Van Dyk" <aidan(at)highrise(dot)ca>, "Kyle Cordes" <kyle(at)kylecordes(dot)com>, "Bruce Momjian" <bruce(at)momjian(dot)us>, "PostgreSQL-development" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Improving compressibility of WAL files
Date: 2009-01-09 19:12:46
Message-ID: 49674D4E.EE98.0025.0@wicourts.gov
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>>> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> AFAICS, file-at-a-time WAL shipping
> is a stopgap implementation that will be dead as a doornail once the
> current efforts towards realtime replication are finished.

As long as there is a way to rsync log data to multiple targets not
running replicas, with compression because of low-speed WAN
connections, I'm happy. Doesn't matter whether that is using existing
techniques or the new realtime techniques.

-Kevin

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