NET系列教程2310B_15.ppt

Module 15:Configuring, Optimizing, and Deploying a Microsoft ASP.NET Web Application Overview Using the Cache Object Using ASP.NET Output Caching Configuring an ASP.NET Web Application Deploying an ASP.NET Web Application Lesson: Using the Cache Object What Is the Cache Object? Advantages of Using the Cache Object How to Use the Cache Object Removing Items from the Cache Object Demonstration: Using the Cache Object What Is the Cache Object? An object used to store information One Cache object per Web Application An alternative to application variables Not used to store information in session variables Uses key-value pairs to store and retrieve items Advantages of Using the Cache Object Faster than creating a new object for each request Supports internal locking Automatic cache resource management Supports callback functions Supports removal based on dependencies How to Use the Cache Object Writing to the Cache object: Retrieving values from the Cache object: Removing Items from the Cache Object AbsoluteExpiration time SlidingExpiration time Dependent on a changed value Cache item priority Demonstration: Using the Cache Object Run the CacheTest.aspx page without the Cache object enabled Run the CacheTest.aspx page with the Cache object enabled Run the CacheTest.aspx page with the Cache object enabled and with a dependency Lesson: Using ASP.NET Output Caching Multimedia: Output Caching Output Cache Types How to Use Page Output Caches Demonstration: Page Output Caching How to Use Fragment Caching Multimedia: Output Caching Output Cache Types Page caching Page fragment caching as a user control XML Web service caching How to Use Page Output Caches Cache content is generated from dynamic pages Entire Web page is available in cache Set cache duration in seconds Set the VaryByParam property to control the number of page variations in the cache Demonstration: Page Output Caching Show how a page that does not cache changes with each refresh Show how a page