Journal ArticleDOI
A case for delay-conscious caching of Web documents
Peter Scheuermann,Junho Shim,Radek Vingralek +2 more
- Vol. 29, pp 997-1005
TLDR
This paper presents a new, delay-conscious cache replacement algorithm LNC-R-W3 which maximizes a performance metric called delay-savings-ratio and compares it with other existing cache replacement algorithms, namely LRU and LRU-MIN.Abstract:
Caching at proxy servers plays an important role in reducing the latency of the user response, the network delays and the load on Web servers. The cache performance depends critically on the design of the cache replacement algorithm. Unfortunately, most cache replacement algorithms ignore the Web's scale. In this paper we argue for the design of delay-conscious cache replacement algorithms which explicitly consider the Web's scale by preferentially caching documents which require a long time to fetch to the cache. We present a new, delay-conscious cache replacement algorithm LNC-R-W3 which maximizes a performance metric called delay-savings-ratio. Subsequently, we test the performance of LNC-R-W3 experimentally and compare it with the performance of other existing cache replacement algorithms, namely LRU and LRU-MIN.read more
Citations
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Journal ArticleDOI
A survey of Web cache replacement strategies
TL;DR: This article proposes a classification for proposals for cache replacement that subsumes prior classifications and discusses the importance of cache replacement strategies in modern proxy caches and outlines potential future research topics.
Journal ArticleDOI
A survey of web caching schemes for the Internet
TL;DR: This paper first describes the elements of a Web caching system and its desirable properties, then the state-of-art techniques which have been used in Web caching systems are surveyed, and the research frontier in Web cache is discussed.
Proceedings ArticleDOI
On the optimal placement of web proxies in the Internet
TL;DR: It is argued that the placement of web proxy is critical to the performance and the optimal placement policy of web proxies for a target web server in the Internet is investigated and this can be modeled a dynamic programming problem.
Journal ArticleDOI
Caching on the World Wide Web
TL;DR: This paper gives an overview of caching policies designed specifically for Web objects and provides a new algorithm of their own, regarded as a generalization of the standard LRU algorithm.
Journal ArticleDOI
Proxy cache algorithms: design, implementation, and performance
TL;DR: A unified cache maintenance algorithm, LNC-R-WS-U, is described, which integrates both cache replacement and consistency algorithms and considers in the eviction consideration the validation rate of each document, as provided by the cache consistency component of LNC.R-W3-U.
References
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Proceedings ArticleDOI
The LRU-K page replacement algorithm for database disk buffering
TL;DR: The LRU-K algorithm surpasses conventional buffering algorithms in discriminating between frequently and infrequently referenced pages, and adapts in real time to changing patterns of access.
ReportDOI
A hierarchical internet object cache
TL;DR: The design and performance of a hierarchical proxy-cache designed to make Internet information systems scale better are discussed, and performance measurements indicate that hierarchy does not measurably increase access latency.
Book
Operating Systems Theory
TL;DR: As one of the part of book categories, operating systems theory always becomes the most wanted book.
Characteristics of WWW Client-based Traces
TL;DR: This paper presents a descriptive statistical summary of the traces of actual executions of NCSA Mosaic, and shows that many characteristics of WWW use can be modelled using power-law distributions, including the distribution of document sizes, the popularity of documents as a function of size, and the Distribution of user requests for documents.
Caching Proxies: Limitations and Potentials
TL;DR: This work assesses the potential of proxy servers to cache documents retrieved with the HTTP protocol, and finds that a proxy server really functions as a second level cache, and its hit rate may tend to decline with time after initial loading given a more or less constant set of users.