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Subject: Re: Erlang views
References: <AANLkTi=VTRxfF2mJuCkV+f37pzTD3pTWbZ32UsEok9Em@mail.gmail.com>
 <58BD4712-EB86-4B4E-8EA7-63FC822BBB26@aptela.com>
From: Thanos Vassilakis <thanosv@gmail.com>
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Date: Fri, 21 Jan 2011 10:28:51 -0500
To: "user@couchdb.apache.org" <user@couchdb.apache.org>
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On my low-end 32-bit windows box, that I have to use as a production
server for the bank I work for,  my views are 4 times faster in Erlang.=20

I've got gigs of data and over 130 views. The engine javascript started
to crash regularly and was un acceptably slow when rebuilding the views.

I first  moved to first to python (2x faster and no crashes) and then to
Erlang (4-5x faster and no crashes). The speed is great, the system is
in production.=20

I've no regrets and Erlang saved my ass.

Thanos

On Jan 20, 2011, at 10:10 PM, Mahesh Paolini-Subramanya <mahesh@aptela.com> w=
rote:

> I'm using them.  Mind you, the main reason is that I far prefer erlang to j=
avascript :-)
> That said, they seem to be a good bit faster (50%?), but I don't really ha=
ve much else to add...
>=20
> cheers
> Mahesh Paolini-Subramanya | CTO | mahesh@aptela.com | 703.386.1500 Ext. 91=
00
> 2250 Corporate Park Drive | Suite 150 | Herndon, VA | www.aptela.com
> Check out our Blog | Follow us on Twitter | Refer a Friend=20
>=20
>=20
>=20
> On Jan 18, 2011, at 7:20 PM, kowsik wrote:
>=20
>> A couple of questions:
>>=20
>> 1. Is anyone using erlang views (as opposed to Javascript) in a
>> production environment?
>> 2. For the map and filter functions, is there any kind of published
>> performance numbers that show the speed up?
>>=20
>> Yes, I'm aware of the built-in reduce functions and I'm using them
>> extensively. I'm more interested in erlang filters + map functions for
>> a write-heavy app that I'm working on.
>>=20
>> Thanks,
>>=20
>> K
>> ---
>> http://www.pcapr.net
>> http://twitter.com/pcapr
>> http://labs.mudynamics.com
>=20

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