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APRICOD: An access-pattern-driven distributed caching middleware for fast content discovery of noncontinuous media access

APRICOD: An access-pattern-driven distributed caching middleware for fast content discovery of... APRICOD: An Access-Pattern-Driven Distributed Caching Middleware for Fast Content Discovery of Noncontinuous Media Access ZHEN WEI ZHAO and WEI TSANG OOI, National University of Singapore Content discovery is a major source of latency in peer-to-peer (P2P) media streaming systems, especially in the presence of noncontinuous user access, such as random seek in Video-on-Demand (VoD) streaming and teleportation in a Networked Virtual Environment (NVE). After the aforementioned user interactions, streaming systems often need to initiate the content discovery process to identify where to retrieve the requested media objects. Short content lookup latency is demanded to ensure smooth user experience. Existing content discovery systems based on either a Distributed Hash Table (DHT) or gossip mechanism cannot cope with noncontinuous access efficiently due to their long lookup latency. In this work, we propose an access-pattern-driven distributed caching middleware named APRICOD, which caters for fast and scalable content discovery in peer-to-peer media streaming systems, especially when user interactions are present. APRICOD exploits correlations among media objects accessed by users, and adapts to shift in the user access pattern automatically. We first present a general APRICOD design that can be used with any existing content discovery system. We then present an implementation of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) Association for Computing Machinery

APRICOD: An access-pattern-driven distributed caching middleware for fast content discovery of noncontinuous media access

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Publisher
Association for Computing Machinery
Copyright
Copyright © 2013 by ACM Inc.
ISSN
1551-6857
DOI
http://dx.doi.org/10.1145/2457450.2457457
Publisher site
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Abstract

APRICOD: An Access-Pattern-Driven Distributed Caching Middleware for Fast Content Discovery of Noncontinuous Media Access ZHEN WEI ZHAO and WEI TSANG OOI, National University of Singapore Content discovery is a major source of latency in peer-to-peer (P2P) media streaming systems, especially in the presence of noncontinuous user access, such as random seek in Video-on-Demand (VoD) streaming and teleportation in a Networked Virtual Environment (NVE). After the aforementioned user interactions, streaming systems often need to initiate the content discovery process to identify where to retrieve the requested media objects. Short content lookup latency is demanded to ensure smooth user experience. Existing content discovery systems based on either a Distributed Hash Table (DHT) or gossip mechanism cannot cope with noncontinuous access efficiently due to their long lookup latency. In this work, we propose an access-pattern-driven distributed caching middleware named APRICOD, which caters for fast and scalable content discovery in peer-to-peer media streaming systems, especially when user interactions are present. APRICOD exploits correlations among media objects accessed by users, and adapts to shift in the user access pattern automatically. We first present a general APRICOD design that can be used with any existing content discovery system. We then present an implementation of

Journal

ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) – Association for Computing Machinery

Published: May 1, 2013

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