NDLI: Proxy prefetch and prefix caching

Content Provider	IEEE Xplore Digital Library
Author	Wei-Kuo Liao Chung-Ta King
Copyright Year	2001
Description	Author affiliation: Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan (Wei-Kuo Liao)
Abstract	Proxy prefetch caching aims to reduce the latency in serving web requests by prefetching objects into the proxy cache in anticipation that they might be requested. Thus, when the clients actually request them, these objects can be served directly from the proxy cache without having to be fetched all the way from the remote server. A key component in proxy prefetch caching is the mechanism to determine the profitability of prefetching. A good prefetch advisor must consider not only factors such as the request probability of the prefetched objects, the network bandwidth, and object size, but also the cache space and those objects already in the cache. A unified framework is therefore needed, under which the prefetch advisor can judge whether prefetching some objects by replacing some other objects in the cache can lead to a reduction in the average user access time. In this paper we introduce a framework that unifies prefetch caching and cache replacement with a single index called object profit. The proposed framework is very general that it can be applied to almost any type of web objects, and it considers network bandwidth, cache capacity and replacement, object size, and analysis simplicity together. We will derive the object profit mathematically and then discuss how to apply the framework in practice. The proposed scheme is evaluated with simulation. As the simulation shows, the latency reduction by using the proposed framework can be maximized.
Sponsorship	Int. Assoc. Comput. & Commun
Starting Page	95
Ending Page	102
File Size	872344
Page Count	8
File Format	PDF
ISBN	0769512577
ISSN	01903918
DOI	10.1109/ICPP.2001.952051
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-09-03
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Prefetching Delay Bandwidth World Wide Web Network servers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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