Publication

Edge Caching as Differentiation

2025

Abstract

Consider an end-user accessing two content providers, A and B, of the same type. If the end-user's ISP prioritizes A-traffic over B-traffic, the end-user may experience A-content with significantly better quality, and the ISP is said to apply "traffic differentiation." We observe that edge caching has a similar effect: if the end-user's ISP hosts a cache that serves A-content with higher hit rate than B-content, the end-user may experience A-content with significantly better quality. Hence, we examine caching as differentiation: We consider 5 popular caching providers, measure the hit rates with which they serve different content, and use the measurements to quantify the impact of edge caching on end-user Quality of Experience (QoE). We present the—in our opinion—surprising QoE disparities that result from edge caching and discuss their implications.

Official source

https://infoscience.epfl.ch/entities/publication/a2c0b65c-ca47-4d59-a9bf-355389202f7e

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a2c0b65c-ca47-4d59-a9bf-355389202f7e

About this result

Related concepts (32)

Content delivery network

A content delivery network, or content distribution network (CDN), is a geographically distributed network of proxy servers and their data centers. The goal is to provide high availability and performance by distributing the service spatially relative to end users. CDNs came into existence in the late 1990s as a means for alleviating the performance bottlenecks of the Internet as the Internet was starting to become a mission-critical medium for people and enterprises.

Quality of experience

Quality of experience (QoE) is a measure of the delight or annoyance of a customer's experiences with a service (e.g., web browsing, phone call, TV broadcast). QoE focuses on the entire service experience; it is a holistic concept, similar to the field of user experience, but with its roots in telecommunication. QoE is an emerging multidisciplinary field based on social psychology, cognitive science, economics, and engineering science, focused on understanding overall human quality requirements.

Quality of service

Quality of service (QoS) is the description or measurement of the overall performance of a service, such as a telephony or computer network, or a cloud computing service, particularly the performance seen by the users of the network. To quantitatively measure quality of service, several related aspects of the network service are often considered, such as packet loss, bit rate, throughput, transmission delay, availability, jitter, etc.

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Edge Caching as Differentiation

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