搜索引擎缓存的特性分析
Characterization of Search Engine Caches
摘要：
搜索引擎提供索引内容的缓存副本，因此如果远程资源暂时或永久不可用，用户将有东西可以“点击”。根据其专有的缓存策略，搜索引擎将清除其索引和缓存中超过不可用阈值的资源。虽然搜索引擎缓存只提供作为一种援助的交互式用户，我们有兴趣建立可靠的保存服务，从这些有限的缓存服务的聚合。但首先，我们必须了解搜索引擎缓存的内容。在本文中，我们已经检查了Ask，Google，MSN和Yahoo的缓存内容，以分析索引和缓存之间的重叠，大小，MIME类型和缓存资源的“陈旧性”。我们还研究了各种缓存与互联网档案馆馆藏的重叠。
英文摘要：
Search engines provide cached copies of indexed content so users will have something to "click on" if the remote resource is temporarily or permanently unavailable. Depending on their proprietary caching strategies, search engines will purge their indexes and caches of resources that exceed a threshold of unavailability. Although search engine caches are provided only as an aid to the interactive user, we are interested in building reliable preservation services from the aggregate of these limited caching services. But first, we must understand the contents of search engine caches. In this paper, we have examined the cached contents of Ask, Google, MSN and Yahoo to profile such things as overlap between index and cache, size, MIME type and "staleness" of the cached resources. We also examined the overlap of the various caches with the holdings of the Internet Archive.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
