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Search Engine Cache
Search engine cache is a cache of web pages that shows the page as it was when it was indexed by a web crawler A Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web and that is typically operated by search engines for the purpose of Web indexing (''web spid .... Cached versions of web pages can be used to view the contents of a page when the live version downtime, cannot be reached, has been altered or File deletion, taken down. When a web crawler crawls the web, it collects the contents of each page to allow the page to be indexed by the Web search engine, search engine. At the same time, it can store a copy of that page and it is not just one time when the crawler will crawl our website again next time, again it will store a copy of Each web pages and this process goes on. The search engine may make the copy accessible to users in the search engine results. Web crawlers that obe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cache (computing)
In computing, a cache ( ) is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. A ''cache hit'' occurs when the requested data can be found in a cache, while a ''cache miss'' occurs when it cannot. Cache hits are served by reading data from the cache, which is faster than recomputing a result or reading from a slower data store; thus, the more requests that can be served from the cache, the faster the system performs. To be cost-effective and to enable efficient use of data, caches must be relatively small. Nevertheless, caches have proven themselves in many areas of computing, because typical computer applications access data with a high degree of locality of reference. Such access patterns exhibit temporal locality, where data is requested that has been recently requested already, and spatial locality, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
