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What is cache

#624 | 2:00 |

Tutorials


Monday March 22, 2010
You hear the term "cache" all over. People will ask, "How large is your cache?" or "Have you cleaned your cache out?" Well, first it helps to know what the cache is! Michael "Doctor File Finder" Callahan explains.

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Show Notes

- A "cache" in computers is used to store data for faster retrieval.

- A cache is commonly used in CPUs, hard drives, and most notably, Web browsers.

- Many newer users don't realize that when they visit a Web site, many elements are downloaded to their computer and stored in their cache.

- A cache is not a "buffer." A cache is more transparent than a buffer which is generally under control of a device.

- For example, the printer buffer is controlled by the printer.

- The browser cache helps Web pages to load much more quickly.

- The reason for this is that content is being read from the cache and doesn't have to be redownloaded.

- The cache can speed up operations.
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