Ca n you please explain this sentence
Ca n you please explain the bold sentence
"However, the user cannot influence other caching parameters, such as how long a document may remain in the cache, or which document should be removed when the cache fills up. Also, it is impossible to make caching decisions based on the content of a document. For instance, a user may want to cache railroad timetables, knowing that these hardly change, but never information on current traffic conditions on the highways."
Top answer
A cache stores in memory information that you want to be able to access instantly instead of having to access it by some slower means, such as going to a website and opening an HTML document. The problem with that is that if you get cached data from your computer, it may not still be valid if it is of a kind that can change frequently. You can cache railroad timetables because there is no need to have fresh ones.
- A cache stores in memory information that you want to be able to access instantly instead of having to access it by some slower means, such as going to a website and opening an HTML document.
- The problem with that is that if you get cached data from your computer, it may not still be valid if it is of a kind that can change frequently.
- You can cache railroad timetables because there is no need to have fresh ones.
- But if you cache a traffic report, two hours later it will no longer be correct.
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A cache stores in memory information that you want to be able to access instantly instead of having to access it by some slower means, such as going to a website and opening an HTML document. The problem with that is that if you get cached data from your computer, it may not still be valid if it is of a kind that can change frequently. You can cache railroad timetables because there is no need
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