Return-Path: X-Original-To: apmail-httpd-dev-archive@www.apache.org Delivered-To: apmail-httpd-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 633F179FA for ; Thu, 6 Oct 2011 17:03:39 +0000 (UTC) Received: (qmail 20838 invoked by uid 500); 6 Oct 2011 17:03:38 -0000 Delivered-To: apmail-httpd-dev-archive@httpd.apache.org Received: (qmail 20788 invoked by uid 500); 6 Oct 2011 17:03:38 -0000 Mailing-List: contact dev-help@httpd.apache.org; run by ezmlm Precedence: bulk Reply-To: dev@httpd.apache.org list-help: list-unsubscribe: List-Post: List-Id: Delivered-To: mailing list dev@httpd.apache.org Received: (qmail 20780 invoked by uid 99); 6 Oct 2011 17:03:38 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 06 Oct 2011 17:03:38 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of amila.uoc@gmail.com designates 74.125.82.173 as permitted sender) Received: from [74.125.82.173] (HELO mail-wy0-f173.google.com) (74.125.82.173) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 06 Oct 2011 17:03:30 +0000 Received: by wyh22 with SMTP id 22so4482108wyh.18 for ; Thu, 06 Oct 2011 10:03:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=U8LYu9FATFSpQOCIhlfySh4u99uXS7xZwGIwFvZIhmM=; b=OB9altr80Ug3oYxTSb2zMvpbERiSyIFL8IdBUhcUlnk0Pts0l9dzX8thj4wtgte6dc VYVf3fvEmROtAEcV9Wdw+P8GCfKklFAgrtbb9gHoaOXnNANt2tDNWrPmhMWpG56sDl3w Rz0kuqt2IVUWeqrGIcwM/Cs7zMmuVcf8fM1gE= MIME-Version: 1.0 Received: by 10.216.14.223 with SMTP id d73mr551806wed.55.1317920590730; Thu, 06 Oct 2011 10:03:10 -0700 (PDT) Received: by 10.216.221.159 with HTTP; Thu, 6 Oct 2011 10:03:10 -0700 (PDT) Date: Thu, 6 Oct 2011 22:33:10 +0530 Message-ID: Subject: Caching - Generating E-Tags From: Amila Liyanaarachchi To: dev@httpd.apache.org Content-Type: multipart/alternative; boundary=001485f85940a7160b04aea44c12 X-Virus-Checked: Checked by ClamAV on apache.org --001485f85940a7160b04aea44c12 Content-Type: text/plain; charset=ISO-8859-1 Hi Dev, I'm working on a caching protocol similar to HTTP on a different research. I have the following question regarding the e-tags. When does exactly apache computes the e-tag for a certain resource? Does it compute that when there is a request for that particular resource or is it computed by the server whenever a resource get modified in the server? Thanks, Amila --001485f85940a7160b04aea44c12 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Dev,

I'm working on a caching protocol similar to= HTTP on a different research. I have the=A0following question=A0regarding = the e-tags.
When does exactly apache computes the e-tag for a cer= tain resource?
Does it compute that when there is a request for that=A0particular res= ource or is it computed by the server whenever a resource get modified in t= he server?=A0

Thanks,
Amila
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