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Cache |
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Cache (pronounced cash) actually has several different technical meanings. But the most important one in regard to the Web has to do with trying to speed things up.Remember--every request you send over the Internet for a picture or text takes time. The Cache is a file on your reader's computer where their system stores a copy of things they've asked for recently. Then, if the reader asks for the same thing again, instead of issuing another Internet request, the reader's computer can simply use the copy from the Cache, sometimes saving as much as 10 or 20 seconds. How big is the Cache and how often is it emptied? Well, that's up to each reader. Some save copies only during onesession-- others may save it for weeks. You don't have to worry about them getting old information, though--the system is smart enough to check and see if it has the most current before displaying it from the cache. (It takes a lot less time to just check the dates than it does to send the whole file over again.) |
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