Return-Path: Delivered-To: apmail-couchdb-user-archive@www.apache.org Received: (qmail 76097 invoked from network); 27 Feb 2009 19:03:47 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 27 Feb 2009 19:03:47 -0000 Received: (qmail 79804 invoked by uid 500); 27 Feb 2009 19:03:44 -0000 Delivered-To: apmail-couchdb-user-archive@couchdb.apache.org Received: (qmail 79771 invoked by uid 500); 27 Feb 2009 19:03:44 -0000 Mailing-List: contact user-help@couchdb.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@couchdb.apache.org Delivered-To: mailing list user@couchdb.apache.org Received: (qmail 79759 invoked by uid 99); 27 Feb 2009 19:03:44 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 27 Feb 2009 11:03:44 -0800 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of wmertens@cisco.com designates 144.254.15.119 as permitted sender) Received: from [144.254.15.119] (HELO av-tac-bru.cisco.com) (144.254.15.119) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 27 Feb 2009 19:03:38 +0000 X-TACSUNS: Virus Scanned Received: from strange-brew.cisco.com (localhost [127.0.0.1]) by av-tac-bru.cisco.com (8.11.7p3+Sun/8.11.7) with ESMTP id n1RJ36012878 for ; Fri, 27 Feb 2009 20:03:06 +0100 (CET) Received: from ams3-vpn-dhcp4884.cisco.com (ams3-vpn-dhcp4884.cisco.com [10.61.83.19]) by strange-brew.cisco.com (8.11.7p3+Sun/8.11.7) with ESMTP id n1RJ2pt14928 for ; Fri, 27 Feb 2009 20:03:05 +0100 (CET) Message-Id: <6C07BA69-B66D-4289-983A-60E9989B5087@cisco.com> From: Wout Mertens To: user@couchdb.apache.org In-Reply-To: Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v930.3) Subject: Re: Why sequential document ids? [was: Re: What's the speed(performance) of couchdb?] Date: Fri, 27 Feb 2009 20:02:51 +0100 References: <60D10DCD-C1F7-4663-B6DF-60DD4641672C@apache.org> <4703936A-A1E8-46C0-B2F4-0DA9FD5D5B9A@apache.org> <8A824EA9-82FA-482C-BF87-691D522C4FC3@cisco.com> <94A51F43-404D-4728-B5B6-8B502EC07E24@apache.org> X-Mailer: Apple Mail (2.930.3) X-Virus-Checked: Checked by ClamAV on apache.org On Feb 27, 2009, at 7:11 PM, Chris Anderson wrote: > I wonder if there's a way to get roughly ascending uuids (v1-ish) > without the security issues that come from having the originating node > permanently inscribed on each document... 1. start at a UUID that would normally be generated (256 bit number in hex) 2. add a random 128bit number (or so) each time you need a new UUID Or is the problem that you would know the node from the UUID range? Wout.