Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 74206 invoked from network); 10 Feb 2011 17:16:00 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 10 Feb 2011 17:16:00 -0000 Received: (qmail 86732 invoked by uid 500); 10 Feb 2011 17:15:58 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 86624 invoked by uid 500); 10 Feb 2011 17:15:55 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 86616 invoked by uid 99); 10 Feb 2011 17:15:55 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 10 Feb 2011 17:15:55 +0000 X-ASF-Spam-Status: No, hits=0.7 required=5.0 tests=RCVD_IN_DNSWL_NONE,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [205.188.105.144] (HELO imr-da02.mx.aol.com) (205.188.105.144) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 10 Feb 2011 17:15:48 +0000 Received: from AOLDTCMEI34.ad.aol.aoltw.net (aoldtcmei34.office.aol.com [10.180.121.151]) by imr-da02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p1AHFPLB030895 for ; Thu, 10 Feb 2011 12:15:25 -0500 Received: from AOLMTCMES32.ad.aol.aoltw.net ([169.254.4.111]) by AOLDTCMEI34.ad.aol.aoltw.net ([10.180.121.151]) with mapi id 14.01.0255.000; Thu, 10 Feb 2011 12:15:24 -0500 From: "Rock, Paul" To: "" Subject: Re: Possible application Thread-Topic: Possible application Thread-Index: AQHLyTNd6hoZYVR7qkm27zDqGo4/0JP7TZ0A Date: Thu, 10 Feb 2011 17:15:23 +0000 Message-ID: <3660AF51-6AC7-461E-B6E6-B8F944C5667C@teamaol.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.17.8.193] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Well, you can make Cassandra work on a single box (or multiple instances on= a single box if need be). My experimental/dev cluster that my team plays w= ith to try things out is 6 nodes running on 6 rather small cloud VM's and i= t works fine. So I'd say yes, it work in the merely big scale. On Feb 10, 2011, at 10:00 AM, Benson Margulies wrote: > Hello there, >=20 > I'm trying to sort out whether Cassandra is a good pick as the data > store for a problem I've got. >=20 > The shape of the thing is a large number of hash tables. On a merely > pretty big scale, it can all run on one pretty big machine. On a > gigantic scale, which is an eventual goal, it will need to spread out > over multiple computers. >=20 > My concern is, in essence, whether Cassandra will scale down to > 'merely big', or whether I need to code to something else for that > purpose and then be able to switch. Imagine, oh, 49 tables, each > storing a million hashes. >=20 > Our current prototype is using redis.