Question

Is there any limit that application state in asp.net can store ??
Am trying to know the limit so that I can avoid any slow on my application performance.

Answer 1

Resources: Because it is stored in memory, application state is very fast compared to saving data to disk or a database. However, storing large blocks of data in application state can fill up server memory, causing the server to page memory to disk. As an alternative to using application state, you can use the ASP.NET cache mechanism for storing large amounts of application data. The ASP.NET cache also stores data in memory and is therefore very fast; however, ASP.NET actively manages the cache and will remove items when memory becomes scarce. For more information see ASP.NET Caching Overview.

From MSDN (emphasis added).