Re: [CDNi] Long Tail personalized content delivery over CDN Interconnections
ramki Krishnan <ramk@Brocade.com> Sat, 08 September 2012 14:35 UTC
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From: ramki Krishnan <ramk@Brocade.com>
To: "Francois Le Faucheur (flefauch)" <flefauch@cisco.com>, "cdni@ietf.org" <cdni@ietf.org>
Date: Sat, 08 Sep 2012 07:35:24 -0700
Thread-Topic: [CDNi] Long Tail personalized content delivery over CDN Interconnections
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Subject: Re: [CDNi] Long Tail personalized content delivery over CDN Interconnections
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All, Thanks for the comments so far. A latest version of the draft is posted at http://datatracker.ietf.org/doc/draft-krishnan-cdni-long-tail/. Kindly review and comment. thanks, ramki From: ramki Krishnan Sent: Wednesday, September 05, 2012 3:59 PM To: 'Francois Le Faucheur (flefauch)' Cc: 'Bhumip.Khasnabish@zte.com.cn'; 'li.mian@zte.com.cn'; 'Richard_Woundy@cable.comcast.com' Subject: FW: [CDNi] Long Tail personalized content delivery over CDN Interconnections Hi Francois, A gentle reminder ... kindly review and comment at your earliest convenience. Thanks, ramki From: ramki Krishnan Sent: Wednesday, August 29, 2012 9:07 PM To: 'Francois Le Faucheur (flefauch)' Cc: Bhumip.Khasnabish@zte.com.cn<mailto:Bhumip.Khasnabish@zte.com.cn>; 'li.mian@zte.com.cn'; 'Richard_Woundy@cable.comcast.com' Subject: RE: [CDNi] Long Tail personalized content delivery over CDN Interconnections Hi Francois, Please find updated draft attached. For convenience, I have described inline the Metadata interface requirements and Request routing interface changes. Metadata interface requirement The CDNI Metadata Distribution interface shall provide indication by the downstream CDN (dCDN) to the upstream CDN (uCDN) whether the content should be cached or not cached in the dCDN. This information should be on a per URL basis. The default behavior would be to cache the content in the dCDN Referring to the example in Fig. 2, Section 3 [I-D.ietf-cdni-framework]; it shows Operator A as the uCDN and Operator B as the dCDN, where the former has a relationship with a content provider and the latter being the best CDN to deliver content to the end-user. Referring to the HTTP example in Fig. 3, Section 3.2 [I-D.ietf-cdni-framework]; Request routing interface changes Step 2: A Request Router for Operator A processes the HTTP request. The HTTP URL metadata is looked up in a metadata database. For long tail personalized content, the metadata database lookup result indicates that the content should not be cached by the dCDN. The Request Router for Operator A recognizes that the end-user is best served by the uCDN without any caching the in dCDN and returns a 302 redirect message with the URL of Operator A delivery node. The end-user proceeds to retrieve the data from Operator A delivery node. Thanks, ramki From: Francois Le Faucheur (flefauch) [mailto:flefauch@cisco.com] Sent: Friday, August 03, 2012 8:15 AM To: ramki Krishnan Cc: Francois Le Faucheur (flefauch); cdni@ietf.org<mailto:cdni@ietf.org>; Kevin J Ma; Ram Krishnan; Bhumip.Khasnabish@zte.com.cn<mailto:Bhumip.Khasnabish@zte.com.cn> Subject: Re: [CDNi] Long Tail personalized content delivery over CDN Interconnections On 3 Aug 2012, at 17:04, ramki Krishnan wrote: Hi Kevin, Thanks a lot for your comments. Please see response below Kevin: >>Wrt CDNI, what is it that draft-krishnan-cdni-long-tail-00 is proposing? >>The CDNI requirements (specifically META-14) already discuss distribution control policies, including preventing delegation. Beyond the ability to >>prevent delegation, are you proposing that CDNs be required to implement analytics-based delegation policies? That seems somewhat beyond our scope. Ramki: The CDNi req META-14 is about the selection of dCDN, but what long tail draft is proposing is the selection of uCDN the selection of uCDN by whom? based on the content attribute, i.e. whether the content is long tail personalized or not. The long tail draft also brings in the concept of no caching in the uCDN The intra-CDN decision of the uCDN to cache or not is generally outside the scope of CDNI. We are not disagreeing that the uCDN may elect to not cache some content (and in that case to not redirect to a dCDN), but this does not seem directly related to CDNI. and dCDN for certain types of content based on the content attribute, for e.g. long tail personalized content. The impacts of this on CDNi request routing is also explained. Can you summarize again very briefly the interaction you see between the desire to not cache some content and the CDNI interfaces? (when discussing Request Routing, please separate the impact you see on the Request Routing/Redirection interface vs Request Routing/Footprint & Cap Interface). Thanks Thanks, ramki From: Bhumip Khasnabish [mailto:vumip1@gmail.com] Sent: Tuesday, July 31, 2012 10:55 AM To: cdni@ietf.org<mailto:cdni@ietf.org> Cc: Ram Krishnan; ramki Krishnan; li.mian@zte.com.cn<mailto:li.mian@zte.com.cn> Subject: Fwd: Long Tail personalized content delivery over CDN Interconnections FYI.. looking for comments and suggestions on delivery of the most popular to long tail personalized content over CDNI. This document presents the issues and suggests solutions in delivering long tail personalized content in CDN Interconnection scenarios. Thanks a lot. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I-D Action: draft-krishnan-cdni-long-tail-00.txt ________________________________ * To: i-d-announce at ietf.org<mailto:i-d-announce@DOMAIN.HIDDEN> * Subject: I-D Action: draft-krishnan-cdni-long-tail-00.txt * From: internet-drafts at ietf.org<mailto:internet-drafts@DOMAIN.HIDDEN> * Date: Mon, 30 Jul 2012 16:49:30 -0700 * Delivered-to: i-d-announce at ietfa.amsl.com<mailto:i-d-announce@DOMAIN.HIDDEN> * List-archive: <http://www.ietf.org/mail-archive/web/i-d-announce> * List-help: <mailto:i-d-announce-request@ietf.org?subject=help> * List-id: Internet Draft Announcements only <i-d-announce.ietf.org<http://i-d-announce.ietf.org/>> * List-post: <mailto:i-d-announce@ietf.org> * List-subscribe: <https://www.ietf.org/mailman/listinfo/i-d-announce>, <mailto:i-d-announce-request@ietf.org?subject=subscribe> * List-unsubscribe: <https://www.ietf.org/mailman/options/i-d-announce>, <mailto:i-d-announce-request@ietf.org?subject=unsubscribe> * Reply-to: internet-drafts at ietf.org<mailto:internet-drafts@DOMAIN.HIDDEN> ________________________________ A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Long Tail personalized content delivery over CDN Interconnections Author(s) : Ram Krishnan Mian Li Bhumip Khasnabish Filename : draft-krishnan-cdni-long-tail-00.txt Pages : 7 Date : 2012-07-30 Abstract: The content desire of users is evolving from most popular to long tail personalized content. This document presents the issues and suggests solutions in delivering long tail personalized content in CDN Interconnection scenarios. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-krishnan-cdni-long-tail There's also a htmlized version available at: http://tools.ietf.org/html/draft-krishnan-cdni-long-tail-00 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ CDNi mailing list CDNi@ietf.org<mailto:CDNi@ietf.org> https://www.ietf.org/mailman/listinfo/cdni
- [CDNi] Fwd: Long Tail personalized content delive… Bhumip Khasnabish
- Re: [CDNi] Long Tail personalized content deliver… ramki Krishnan
- Re: [CDNi] Long Tail personalized content deliver… Francois Le Faucheur (flefauch)
- Re: [CDNi] Long Tail personalized content deliver… ramki Krishnan
- Re: [CDNi] Long Tail personalized content deliver… Ben Niven-Jenkins
- [CDNi] Comments on Long Tail personalized content… Francois Le Faucheur (flefauch)