From wiggins at danconia.org  Thu May 20 19:02:41 2010
From: wiggins at danconia.org (Brian J. Miller)
Date: Thu, 20 May 2010 22:02:41 -0400
Subject: [Boulder.pm] Multi-process caching
In-Reply-To: <19386.29391.564786.221342@r1.bivio.biz>
References: <19386.29391.564786.221342@r1.bivio.biz>
Message-ID: <4BF5E9C1.5090100@danconia.org>

Rob Nagler wrote:
> We are having some performance issues for some of our larger apps.  We
> have a Postgres table (Bivio::Biz::Model::RealmRole) which needs to
> get access frequently, and is written relatively infrequently.  We
> need some sort of in memory cache.
> 
> I took a look at the IPC::* modules, and none of them seems so
> brilliant.  Before I go diving into performance testing each of them,
> I was wondering if anybody on this list had opinions about which is
> the most reliable.
> 
> We need to get to <100ms for accessing the data, which for our larger
> apps, is about 500KB serialized with Data::Dumper.  Deserialization is
> too expensive (250ms).
> 
> We are also thinking about going with a *dbm module or perhaps
> Berkeley DB.  There are about 800K rows, which is really a two-level
> tree (realm, role), which is why the serialization is so compact.  I
> don't know how dbm/DB work with this size of data.
> 
> So I'm looking for experience with these technologies from a
> reliability (first) and performance (second) standpoint.
> 
> Thanks,
> Rob
> 

Only 1.5 months later, but looked at memcached?

-- 
Brian J. Miller
End Point Corp.
http://www.endpoint.com/
brian at endpoint.com

From nagler at bivio.biz  Mon May 24 12:27:10 2010
From: nagler at bivio.biz (Rob Nagler)
Date: Mon, 24 May 2010 13:27:10 -0600
Subject: [Boulder.pm] Multi-process caching
In-Reply-To: <4BF5E9C1.5090100@danconia.org>
References: <19386.29391.564786.221342@r1.bivio.biz>
	<4BF5E9C1.5090100@danconia.org>
Message-ID: <19450.54030.640829.643087@r1.bivio.biz>

> Only 1.5 months later, but looked at memcached?

That would be interesting if we had a multi-process problem.  At this
stage we don't so we went with Storable which has improved performance
dramatically. 

Rob

From wpiencia at thunderdome.ieee.org  Mon May 24 14:22:24 2010
From: wpiencia at thunderdome.ieee.org (Walter Pienciak)
Date: Mon, 24 May 2010 15:22:24 -0600
Subject: [Boulder.pm] [szabgab@gmail.com: [pm_groups] The Perl Survey 2010
	is now live]
Message-ID: <20100524212224.GA28553@thunderdome.ieee.org>

For those so inclined.

Walter
-------------- next part --------------
An embedded message was scrubbed...
From: Gabor Szabo <szabgab at gmail.com>
Subject: [pm_groups] The Perl Survey 2010 is now live
Date: Thu, 20 May 2010 08:34:37 +0300
Size: 5019
URL: <http://mail.pm.org/pipermail/boulder-pm/attachments/20100524/3cf6bfe6/attachment.mht>