Return-Path: Delivered-To: apmail-incubator-cassandra-user-archive@minotaur.apache.org Received: (qmail 64681 invoked from network); 11 Dec 2009 19:43:33 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 11 Dec 2009 19:43:33 -0000 Received: (qmail 14919 invoked by uid 500); 11 Dec 2009 19:43:32 -0000 Delivered-To: apmail-incubator-cassandra-user-archive@incubator.apache.org Received: (qmail 14903 invoked by uid 500); 11 Dec 2009 19:43:32 -0000 Mailing-List: contact cassandra-user-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: cassandra-user@incubator.apache.org Delivered-To: mailing list cassandra-user@incubator.apache.org Received: (qmail 14894 invoked by uid 99); 11 Dec 2009 19:43:32 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 11 Dec 2009 19:43:32 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of jbellis@gmail.com designates 209.85.218.210 as permitted sender) Received: from [209.85.218.210] (HELO mail-bw0-f210.google.com) (209.85.218.210) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 11 Dec 2009 19:43:24 +0000 Received: by bwz2 with SMTP id 2so907547bwz.20 for ; Fri, 11 Dec 2009 11:43:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:content-type; bh=mcula251opT7yg0Be+xOXC3Sd/2ZWS8oXCsd1XOsZTs=; b=IpoRC/1rGxE/rj5/ipudN9bflFxZUMY5edEdpLurzNsFSuDAe/Kw3ipnPYtvOjLWh/ tvdJjsyfXmsf8fxupt3QSU4Eb9TZ+g3MzYiwFYdkYSzUtjgoZLaUgWDbQ/Eyhc6o1VDF kiS0hOSxGJQIinSgPJ0BLU8wIka36jY8FAxIc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; b=xstjdDz1+64HRTmRGCaaXDqNb2VbaWajS1XGBciG2t1njVg1+tp3587SPD64bzB8c4 FAPbPbdkIGNl3Yq2JJuBuauBCx/WQDvtMk1VoFMGB3bcaQoFOz/qOQvgse5Ae35WASTh Lowzns/FTUSQoay1FxVgC5M3hiKEzV3mx9518= MIME-Version: 1.0 Received: by 10.204.154.219 with SMTP id p27mr1005960bkw.115.1260560584144; Fri, 11 Dec 2009 11:43:04 -0800 (PST) In-Reply-To: <828083e70912111132r3fb877bam9bbf2a0f8108df52@mail.gmail.com> References: <9972cc9e0912110927n35a60dc3m1db5efc78ab7df7f@mail.gmail.com> <828083e70912111132r3fb877bam9bbf2a0f8108df52@mail.gmail.com> From: Jonathan Ellis Date: Fri, 11 Dec 2009 13:42:44 -0600 Message-ID: Subject: Re: Questions about optmizing interaction with Cassandra To: cassandra-user@incubator.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org On Fri, Dec 11, 2009 at 1:32 PM, gabriele renzi wrote: > FWIW, in our current application with 0.4 we implemented in-cassandra > caching, whereas a query that reads many thousands of columns and > takes some time is cached in a separate entry > QueryCache[q]=serializedResult > and we flush it on update. > I don't see why that cant be done by cassandra itself (maybe it's > already done in 0.5) No, but it is worth exploring. -Jonathan