<div dir="ltr">Hey Tatsuo,<div><br></div><div>I've used HAProxy in this configuration successfully.</div><div><br></div><div>Obviously it doesn't know anything about load balancing write SQL to the master - but as far as load balancing read queries it works well (as long as you enforce session stickiness).</div><div><br></div><div>We actually use HAProxy, in front of PGPool, in front of a PostgreSQL HA cluster at some sites. This works well.</div><div><br></div><div>Cheers,</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div style="color:#b8276a;font:bold 14px Arial,Helvetica,sans-serif">
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<span style="color:#323b62">James Sewell,</span><br>
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<br><div class="gmail_quote">On Thu, Feb 18, 2016 at 2:02 AM, Tatsuo Ishii <span dir="ltr"><<a href="mailto:ishii@postgresql.org" target="_blank">ishii@postgresql.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">> On 02/17/2016 09:25 AM, Tatsuo Ishii wrote:<br>
>> BTW, I personally have no experience with HAProxy, one of my customers<br>
>> told me that he had bad experience with HAProxy and that was one of<br>
>> his reasons he decided to migrate to pgpool-II (single instance).<br>
><br>
> FWIW, one of my clients successfully used HAProxy to Load Balance<br>
> across Tomcat's. Their system had a bit of demand during certain<br>
> periods.<br>
<br>
</span>Well, Tomcat is totally different from PostgreSQL or pgpool-II. My<br>
customer used HAProxy in front of PostgreSQL. He expected HAProxy<br>
properly handles the case when PostgreSQL goes down but HAProxy hangs<br>
when it actually happens.<br>
<span class="im HOEnZb"><br>
Best regards,<br>
--<br>
Tatsuo Ishii<br>
SRA OSS, Inc. Japan<br>
English: <a href="http://www.sraoss.co.jp/index_en.php" rel="noreferrer" target="_blank">http://www.sraoss.co.jp/index_en.php</a><br>
Japanese:<a href="http://www.sraoss.co.jp" rel="noreferrer" target="_blank">http://www.sraoss.co.jp</a><br>
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