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Topic: What is caching ?
25 Feb 2010 at 01:41 PM

When clients access an ASP.NET page, there are basically two ways to provide them with the information they need:

  • the ASP.NET page can either obtain information from server resources, such as from data that has been persisted to a database, or
  • the ASP.NET page can obtain information from within the application.

Retrieving information from a resource outside the application will require more processing steps, and will therefore require more time and resources on the server than if the information can be obtained from within the application space.

If the information that will be sent to the browser has already been prepared by a previous request, the application will be able to retrieve that information faster if it has been stored in memory, somewhere along the request/response stream.

Known as caching, this technique can be used to temporarily store page output or application data either on the client or on the server, which can then be re-used to satisfy subsequent requests and thus avoid the overhead of re-creating the same information.

Caching is particularly suitable when you expect to return the same information in the same format for many different requests.

ASP.NET provides the following types of caching that can be used to build highly responsive Web applications:

  • Output caching, which caches the dynamic response generated by a request.
  • Fragment caching, which caches portions of a response generated by a request.
  • Data caching, which allows developers to programmatically retain arbitrary data across requests.
Re: What is caching ?
02 Jul 2010 at 10:42 PM
Nice Just for Testing
Total Replies: 1
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