International audienceWeb content coming from outside the ISP is today skyrocketing, causing significant additional infrastructure costs to network operators. The reduced marginal revenues left to ISPs, whose business is almost entirely based on declining flat rate subscriptions, call for significant innovation within the network infrastructure, to support new service delivery. In this paper, we suggest the use of micro CDNs in ISP access and back-haul networks to reduce redundant web traffic within the ISP infrastructure while improving user's QoS. With micro CDN we refer to a content delivery system composed of (i) a high speed caching substrate, (ii) a content based routing protocol and (iii) a set of data transfer mechanisms made available by content-centric networking. The contribution of this paper is twofold. First, we extensively analyze more than one month of web traffic via continuous monitoring between the access and back-haul network of Orange in France. Second, we characterize key properties of monitored traffic, such as content popularity and request cacheability, to infer potential traffic reduction enabled by the introduction of micro CDNs. Based on these findings, we then perform micro CDN dimensioning in terms of memory requirements and provide guidelines on design choices
Web traffic is growing, and the need for accurate traces of HTTP traffic is therefore also rising, both for operators and researchers, as accurate HTTP traffic traces allow to analyse and characterize the traffic and the clients, and to analyse the performance of the network and the perceived quality of service for the final users. Since most ICN proposals also advocate for pervasive caching, it's imperative to measure the cacheability of traffic to assess the impact and/or the potential benefits of such solutions. This demonstration will show a both a tool to collect HTTP traces that is both fast and accurate and that overcomes the limitations of existing tools, and a set of important statistics that can be computed in post processing, like aggregate/demultiplexed cacheability figures.
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