Caching in asp.net

It is a way to store the frequently used data into the server memory which can be retrieved very quickly. And so provides both scalability and performance. For example if user is required to fetch the same data from database frequently then the resultant data can be stored into the server memory and later retrieved in very less time (better performance). And the same time the application can serve more page request in the same time (scalability).

Caching Options in ASP.NET

ASP.NET supports three types of caching for Web-based applications:

• Page Level Caching (called Output Caching)
• Page Fragment Caching (often called Partial-Page Output Caching)
• Programmatic or Data Caching