Return-Path: Delivered-To: apmail-incubator-couchdb-user-archive@locus.apache.org Received: (qmail 62309 invoked from network); 4 Oct 2008 15:28:00 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 4 Oct 2008 15:28:00 -0000 Received: (qmail 1064 invoked by uid 500); 4 Oct 2008 15:27:58 -0000 Delivered-To: apmail-incubator-couchdb-user-archive@incubator.apache.org Received: (qmail 1033 invoked by uid 500); 4 Oct 2008 15:27:58 -0000 Mailing-List: contact couchdb-user-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: couchdb-user@incubator.apache.org Delivered-To: mailing list couchdb-user@incubator.apache.org Received: (qmail 1022 invoked by uid 99); 4 Oct 2008 15:27:58 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 04 Oct 2008 08:27:58 -0700 X-ASF-Spam-Status: No, hits=1.2 required=10.0 tests=SPF_NEUTRAL X-Spam-Check-By: apache.org Received-SPF: neutral (athena.apache.org: local policy) Received: from [83.97.50.139] (HELO jan.prima.de) (83.97.50.139) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 04 Oct 2008 15:26:52 +0000 Received: from [10.0.1.6] (e178221075.adsl.alicedsl.de [::ffff:85.178.221.75]) (AUTH: LOGIN jan, TLS: TLSv1/SSLv3,128bits,AES128-SHA) by jan.prima.de with esmtp; Sat, 04 Oct 2008 15:27:25 +0000 Message-Id: From: Jan Lehnardt To: couchdb-user@incubator.apache.org In-Reply-To: <27d8d0930810040747v6e60195duccee2422f32c4fbd@mail.gmail.com> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v928.1) Subject: Re: couch_util:new_uuid problem? Date: Sat, 4 Oct 2008 17:26:53 +0200 References: <27d8d0930810031649h3fa3d5deyd16f373527aae472@mail.gmail.com> <27d8d0930810031753hcf4df28x29dad0c49b163564@mail.gmail.com> <3D815525-3CF2-467C-B1DA-0F3F067E59D9@apache.org> <27d8d0930810040113m47c2fe68pf6ac319b1d40c485@mail.gmail.com> <43178836-940B-4DDA-AFCC-EE9F25ADA34A@apache.org> <27d8d0930810040747v6e60195duccee2422f32c4fbd@mail.gmail.com> X-Mailer: Apple Mail (2.928.1) X-Virus-Checked: Checked by ClamAV on apache.org On Oct 4, 2008, at 16:47 , Ayende Rahien wrote: > So those are internal and not for external use, right? They are meant for node-specific settings. You can create your own ones by naming them "_local/foo". Most applications would not need them. Cheers Jan -- > > > On Sat, Oct 4, 2008 at 5:08 PM, Jan Lehnardt wrote: > >> >> On Oct 4, 2008, at 10:13 , Ayende Rahien wrote: >> >> What is the use case for them? >>> >> >> Keeping track of stuff between replications afaik. >> >> >> Cheers >> Jan >> -- >> >> >>> >>> On Sat, Oct 4, 2008 at 11:10 AM, Jan Lehnardt >>> wrote: >>> >>> >>>> On Oct 4, 2008, at 2:53 , Ayende Rahien wrote: >>>> >>>> >>>>> B) What is the meaning of "_local" documents? I couldn't find >>>>> anything >>>>> about >>>>> it. >>>>> >>>>> >>>> A special kind of documents for internal use that do not get >>>> replicated. >>>> They are sorta private. >>>> >>>> Cheers >>>> Jan >>>> -- >>>> >>>> >>>> >>>>> On Sat, Oct 4, 2008 at 2:49 AM, Ayende Rahien >>>>> wrote: >>>>> >>>>> Looking at the method implementation, it looks like there might >>>>> be a >>>>> >>>>>> problem here. >>>>>> >>>>>> new_uuid() -> >>>>>> list_to_binary(to_hex(crypto:rand_bytes(16))). >>>>>> >>>>>> In particular, we aren't actually guaranteed to have a unique >>>>>> value. >>>>>> You can read more about what needs to be done to get unique >>>>>> guids: >>>>>> here: >>>>>> http://blogs.msdn.com/oldnewthing/archive/2008/06/27/8659071.aspx >>>>>> >>>>>> >>>>>> >>>>>> >>>> >>