Creating a Custom Output Cache Provider in ASP.NET 4

Output Caching is a very common and popular performance improvement technique for ASP.NET applications. In the previous versions of ASP.NET the output caching mechanism of ASP.NET was rigid in terms of cache store. For example, developers didn't have any flexibility if they wanted to store the output cache in a disk file instead of the server memory. Luckily, ASP.NET 4 provides such flexibility to developers. ASP.NET 4 follows a provider model for output caching. This means you can now define a custom cache provider and plug it in using a configuration file. This article illustrates how such a custom output cache provider that stores cached output in disk files can be developed.