C# .NET - Web Application

Cache concepts in asp.net

The Cache class has been designed for ease of use. By using keys paired with values, you can place items in the Cache and later retrieve them. For examples of how to do this, see Adding Items to the Cache and Retrieving Values of Cached Items.

While the Cache class offers a simple interface for you to customize cache settings, it also offers powerful features that allow you to customize how items are cached and how long they are cached. For example, when system memory becomes scarce, the cache automatically removes seldom used or unimportant items to allow memory to be used to process a high volume of requests. This technique is called scavenging. It is one of the ways that the cache ensures that data that is not current does not consume valuable server resources.



Refer MSDN (http://msdn.microsoft.com/en-us/library/xsbfdd8c%28v=vs.71%29.aspx)

Hi..
Read Here Cache concepts.

1)Caching is a concept of storing frequently used data into a temporary memory for faster access.

2) This is considered as a optimization technique to improve performance of
web server.

3) Caching is recommended when the pages having database communication for presenting data and expected with more number if requests.

4) asp 3.0 supports only entire page caching towards client side.

asp.net supports three types of caching

* Output caching
* Fragment caching
* Data caching

output caching:- When the entire page output is stored into memory location this is called output caching.

<%output cache dureation="n"
varybyparam="name/parameter name"
diskcacheable="true/false" location="client/server/
server and client/any/none" varybycustom="browser"
varybyheader="accept-language"%>

place the above code snippet in source of the website.