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 BA66B17302 for ; Wed, 8 Oct 2014 17:54:54 +0000 (UTC) Received: (qmail 83098 invoked by uid 500); 8 Oct 2014 17:54:51 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 83064 invoked by uid 500); 8 Oct 2014 17:54:51 -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 83053 invoked by uid 99); 8 Oct 2014 17:54:51 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Oct 2014 17:54:51 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of rcoli@eventbrite.com designates 209.85.217.181 as permitted sender) Received: from [209.85.217.181] (HELO mail-lb0-f181.google.com) (209.85.217.181) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Oct 2014 17:54:26 +0000 Received: by mail-lb0-f181.google.com with SMTP id l4so8509245lbv.40 for ; Wed, 08 Oct 2014 10:54:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=Sbgh9/vO0LI3wpphK6cpHzsxNBqhC7CJ+Im8TO7rDbw=; b=f770sH9gbt2wycal60p3kiSfKYes3CR1RxjCE93GLNyMUfggIx5aW5Nwz1OiaBUigM 499BxyT+TpCEFuK8yAeXy/hFjN9eu+BqFHEXpSczJ7k8hmLXnV7FzT6rpBD+Gmkav7sU yOFemYaWeWlSDK7r/bH3Bw8spY1zDqQIQwAMv/+Jo8866aLAKXCKXhYOgyLcS16Dtf/j dmbQbHpJBZdC6WzXJu9KlJkVsYtksqRuhfFbz3yHQDS+TPTkI2SabQKvFyrcYnuMtYlX aC+sHCtiJcKtdG6DYO/dLMagFRFYu6+hzG8869TbkJXjNkS5r3sRXPW+eTUliv/xpdTH SBMw== X-Gm-Message-State: ALoCoQmUZbqQ/MyQfFOXLcVHI+op0CPdlTo/dNuOEM5Yf4NRQQc084ez5JsJzR8E3JOWWTf7+bDG MIME-Version: 1.0 X-Received: by 10.112.63.104 with SMTP id f8mr12551025lbs.91.1412790865214; Wed, 08 Oct 2014 10:54:25 -0700 (PDT) Received: by 10.114.187.168 with HTTP; Wed, 8 Oct 2014 10:54:25 -0700 (PDT) In-Reply-To: <543565EE.4040904@cs.rutgers.edu> References: <543565EE.4040904@cs.rutgers.edu> Date: Wed, 8 Oct 2014 10:54:25 -0700 Message-ID: Subject: Re: Consistency Levels From: Robert Coli To: "user@cassandra.apache.org" Content-Type: multipart/alternative; boundary=001a11c3bc4aa9d76f0504ed017e X-Virus-Checked: Checked by ClamAV on apache.org --001a11c3bc4aa9d76f0504ed017e Content-Type: text/plain; charset=UTF-8 On Wed, Oct 8, 2014 at 9:27 AM, William Katsak wrote: > I was wondering if anyone (Datastax?) has any usage data about consistency > levels. For example, what consistency levels are real applications using in > real production scenarios. Who is using eventual consistency (ONE-ONE) in > production vs strong consistency (QUORUM-QUORUM, ONE-ALL). Obviously it > depends on the application, but I am trying to collect some information on > this. > Anecdotally, my sense of the typical deploy is that it is RF=N=3, with CL.ONE. =Rob --001a11c3bc4aa9d76f0504ed017e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable --001a11c3bc4aa9d76f0504ed017e--