October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 Unleashed
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Using an Absolute Cache Expiration Policy
When you use an absolute cache expiration policy, the data that a DataSource represents is cached in memory for a particular duration of time. Using an absolute cache expiration policy is useful when you know that your data does not change that often. For example, if you know that the records contained in a database table are modified only once a day, there is no reason to keep grabbing the same records each and every time someone requests a web page.
Warning
When caching with the SqlDataSource control, the SqlDataSource control’s DataSourceMode property must be set to the value DataSet (the default value) rather than DataReader.
The page in Listing 29.27 displays a list of movies cached in memory. ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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