Understanding the Smartrouter-based Peer CDN for Video Streaming
Ming Ma, Zhi Wang, Ke Su, Lifeng Sun

TL;DR
This paper analyzes the deployment and performance of a smartrouter-based peer CDN for video streaming, revealing key strategies for caching, QoS monitoring, and potential improvements in the content delivery ecosystem.
Contribution
It provides the first comprehensive measurement study of Youku's peer CDN with over 300K smartrouters, highlighting effective caching strategies and QoS monitoring capabilities.
Findings
Proactive daily replication and caching improve performance.
Peer CDN can serve as a QoS monitoring system.
Identifies performance issues and suggests improvements.
Abstract
Recent years have witnessed a new video delivery paradigm: smartrouter-based video delivery network, which is enabled by smartrouters deployed at users' homes, together with the conventional video servers deployed in the datacenters. Recently, ChinaCache, a large content delivery network (CDN) provider, and Youku, a video service provider using smartrouters to assist video delivery, announced their cooperation to create a new paradigm of content delivery based on householders' network resources. This new paradigm is different from the conventional peer-to-peer (P2P) approach, because such dedicated smartrouters are inherently operated by the centralized video service providers in a coordinative manner. It is intriguing to study the strategies, performance and potential impact on the content delivery ecosystem of such peer CDN systems. In this paper, we study the Youku peer CDN, which…
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Taxonomy
TopicsCaching and Content Delivery · Peer-to-Peer Network Technologies · Opportunistic and Delay-Tolerant Networks
