منابع مشابه
World Wide Web Cache Consistency
The bandwidth demands of the World Wide Web continue to grow at a hyper-exponential rate. Given this rocketing growth, caching of web objects as a means to reduce network bandwidth consumption is likely to be a necessity in the very near future. Unfortunately, many Web caches do not satisfactorily maintain cache consistency. This paper presents a survey of contemporary cache consistency mechani...
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With web caching and cache-related services like CDNs and edge services playing an increasingly significant role in the modern Internet, the problem of the weak consistency and coherence provisions in current web protocols is drawing increasing attention. Toward this end, we differentiate definitions of consistency and coherence for web-like caching environments, and then present a novel web pr...
متن کاملWCDP: A protocol for web cache consistency
Cache consistency at web intermediaries is required for scalable web content delivery. In this paper we describe the Web Content Distribution protocol (WCDP), which is an invalidation and update protocol to provide cache consistency for a large number of frequently changing web objects. WCDP supports different levels of consistency: strong, delta, weak, and explicit. It supports atomic invalida...
متن کاملPeriodic Polling for Web Cache Consistency
As the size of proxy cache increases, the lifetime of objects in the cache would increase. If the objects in the cache were to be stored for a long time without checking its validity, the number of stale documents would also increase. The idle network bandwidth can be used for proxy cache consistency maintenance. We propose the selection algorithm that can be used in periodic polling mechanism ...
متن کاملMaintaining Strong Cache Consistency in the World-Wide Web
As the Web continues to explode in size, caching becomes increasingly important. With caching comes the problem of cache consistency. Conventional wisdom holds that strong cache consistency is too expensive for the Web, and weak consistency methods such as Time-To-Live (TTL) are most appropriate. This study compares three consistency approaches: adap-tive TTL, polling-every-time and invalidatio...
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ژورنال
عنوان ژورنال: ACM Transactions on Internet Technology
سال: 2002
ISSN: 1533-5399,1557-6051
DOI: 10.1145/572326.572329