Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 74033 invoked from network); 8 May 2010 22:42:39 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 8 May 2010 22:42:39 -0000 Received: (qmail 98323 invoked by uid 500); 8 May 2010 22:42:37 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 98302 invoked by uid 500); 8 May 2010 22:42:37 -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 98294 invoked by uid 99); 8 May 2010 22:42:37 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 08 May 2010 22:42:37 +0000 X-ASF-Spam-Status: No, hits=2.3 required=10.0 tests=AWL,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [74.125.82.172] (HELO mail-wy0-f172.google.com) (74.125.82.172) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 08 May 2010 22:42:31 +0000 Received: by wyb39 with SMTP id 39so252851wyb.31 for ; Sat, 08 May 2010 15:42:09 -0700 (PDT) MIME-Version: 1.0 Received: by 10.216.185.139 with SMTP id u11mr1199887wem.13.1273358529252; Sat, 08 May 2010 15:42:09 -0700 (PDT) Received: by 10.216.8.132 with HTTP; Sat, 8 May 2010 15:42:09 -0700 (PDT) In-Reply-To: <9FDD40D1-30B3-4504-8350-A21157EBB82C@gmail.com> References: <9FDD40D1-30B3-4504-8350-A21157EBB82C@gmail.com> Date: Sat, 8 May 2010 15:42:09 -0700 Message-ID: Subject: Re: Data Modeling Conundrum From: Ed Anuff To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=001485f1d928ced00b04861ce202 --001485f1d928ced00b04861ce202 Content-Type: text/plain; charset=ISO-8859-1 Sorry, missed that. I'm not sure if there's a cleaner way than using the approaches you've looked at, hopefully someone else has an answer. How big is N and do you need to keep more than N around? On Sat, May 8, 2010 at 10:26 AM, William Ashley wrote: > This would be a solution if I wanted to get the N most recently CREATED > guids, but I'm interested in the most recently SEEN guids. > > --001485f1d928ced00b04861ce202 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sorry, missed that.=A0 I'm not sure if there's a cleaner way than u= sing the approaches you've looked at, hopefully someone else has an ans= wer.=A0 How big is N and do you need to keep more than N around?

On = Sat, May 8, 2010 at 10:26 AM, William Ashley <washley@gmail.com> wrote:
This would be a soluti= on if I wanted to get the N most recently CREATED guids, but I'm intere= sted in the most recently SEEN guids.

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