From user-return-21822-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Thu Oct 27 05:29:06 2011 Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 9153A94F1 for ; Thu, 27 Oct 2011 05:29:06 +0000 (UTC) Received: (qmail 7584 invoked by uid 500); 27 Oct 2011 05:29:04 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 7565 invoked by uid 500); 27 Oct 2011 05:29:04 -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 7557 invoked by uid 99); 27 Oct 2011 05:29:03 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 27 Oct 2011 05:29:03 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of yulinyen@gmail.com designates 209.85.215.172 as permitted sender) Received: from [209.85.215.172] (HELO mail-ey0-f172.google.com) (209.85.215.172) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 27 Oct 2011 05:28:55 +0000 Received: by eyg24 with SMTP id 24so2246713eyg.31 for ; Wed, 26 Oct 2011 22:28:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=qzGp/zXMzWfokZoVNYDsbfiSigcqXoIy+pE5twSUFsA=; b=Y5/kYjgUOFehn1x8CT7FU6L+EE1bztLoV7RzlIxEpvvlBuvxqhOXeDmeDDRqba+hE3 P6c1TGO7tKbadJffYnWCoQTDahIUNWNiMhELT8+45Yu/iib/pJpE8wXoWxCK8mXNh26z K1s6Nx8cajDxKA9++H1KKGBnr9OClom779ZEc= MIME-Version: 1.0 Received: by 10.14.18.26 with SMTP id k26mr4254759eek.5.1319693315511; Wed, 26 Oct 2011 22:28:35 -0700 (PDT) Received: by 10.14.47.80 with HTTP; Wed, 26 Oct 2011 22:28:35 -0700 (PDT) Date: Thu, 27 Oct 2011 13:28:35 +0800 Message-ID: Subject: multiple keyspace vs single keyspace From: Boris Yen To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=0016e659fe1a48952504b0410bdb X-Virus-Checked: Checked by ClamAV on apache.org --0016e659fe1a48952504b0410bdb Content-Type: text/plain; charset=ISO-8859-1 Hi, We plan to put data into different keyspaces, e.g a keyspace specific to save our own configurations, a keyspace to save data like events, devices and some other keyspaces to save other type of data. Is there any limitation on this kind of design. Any pros or cons? Regards Boris --0016e659fe1a48952504b0410bdb Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi,

We plan to put data into different keyspaces, e.g a = keyspace specific to save our own configurations, a keyspace to save data l= ike events, devices and some other keyspaces to save other type of data. Is= there any limitation on this kind of design. Any pros or cons?

Regards
Boris


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