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CDN Technologies by Mind Map: CDN Technologies
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CDN Technologies

CDNi

Standard (ietf)

Internet-Draft, Framework for CDN Interconnection http://datatracker.ietf.org/doc/draft-ietf-cdni-framework/, Content Distribution Network Interconnection (CDNI) Problem Statement http://datatracker.ietf.org/doc/draft-ietf-cdni-problem-statement/, Content Distribution Network Interconnection (CDNI) Requirements http://datatracker.ietf.org/doc/draft-ietf-cdni-requirements/, Use Cases for Content Delivery Network Interconnection http://datatracker.ietf.org/doc/draft-ietf-cdni-use-cases/

Resources

Cisco, CDN Federation: Lessons from the CDN Federation Pilot Ph2, 2012

Request Routing

"Closest" to User

Global CDN, Using Local DNS Server IP Address (Akamai)

Operator On-Net CDN, Static Configuration (Zone File): User Subnet & Edge Server Subnet, per Zone, Dynamic/Automatic, Passive Listening to Routing Protocol Directly, Active Probing of Underlining Network, Using ALTO Service, DCIA P4P WG (2008), P4P: Explicit Communications for Cooperative Control Between P2P and Network Providers, New node, P4P: ISPs and P2P, IETF Transport / ALTO WG, RFC, RFC 5693 (2009): Application-Layer Traffic Optimization (ALTO) Problem Statement, Internet-Darft, https://datatracker.ietf.org/doc/draft-ietf-alto-deployments/, https://datatracker.ietf.org/doc/draft-ietf-alto-protocol/, https://datatracker.ietf.org/doc/draft-ietf-alto-reqs/, https://datatracker.ietf.org/doc/draft-ietf-alto-server-discovery/, New node, Use Cases for ALTO within CDNs https://datatracker.ietf.org/doc/draft-jenkins-alto-cdn-use-cases/, Use Cases for High Bandwidth Query and Control of Core Networks https://datatracker.ietf.org/doc/draft-bernstein-alto-large-bandwidth-cases/, ALTO Extensions to Support Application and Network Resource Information Exchange for High Bandwidth Applications https://datatracker.ietf.org/doc/draft-lee-alto-app-net-info-exchange/, Vendor Implementation, Cisco, Network Positioning System (NPS), Juniper, New node

Load-based Routing (Edge Server Load Monitoring)

Service-aware Routing (HTTP, RTSP, RTMP etc.)

Content-aware Routing (Requested URI Hashing)

Content Placement to Edge Server

Static Pre-Positioning

KT IPTV CDN

Dynamic Caching (Cache Miss/Cache Fill)

Single Source

Multiple Sources, Multiple HTTP ???, BitTorrent (Chunk), Velocix

Content Delivery to User Device

HTTP Download

HTTP Progressive Download

YouTube

HTTP Paced Progressive Download

HTTP Adaptive Streaming (Chunk)

Microsoft HTTP Smooth Streaming (HSS), Netflix

Adobe HTTP Dynamic Streaming (HDS)

Apple HTTP Live Streaming (HLS)

DASH

RTSP

RTMP

Content Acquisition into CDN

Pre-Ingest (Pre-Fetching): Content is uploaded to CDN acquisition server before it is first requested by an user

Dynamic Acquisition (Reverse Proxy): Content is downloaded from CSP's origin server when first requested by an user