How do you implement Data Caching in ASP.NET?

Data caching is carried out manually in your code.In data caching,you store important pieces of information that are time consuming to reconstruct such as dataset retreived from a database.
    ASP.NET Provides 3 methods to store data or objects into the cache.

    Adding :  
    Cache["Item"] = "Some string data";
    Cache.Add("Item", "Some data", null, Cache.NoAbsoluteExpiration, System.TimeSpan.FromMinutes(1),            CacheItemPriority.Default, null);
    Cache.Insert("Item", "Some data");

    Getting:
          if(Cache["Item"] != null)
String str = Cache["Item"] .ToString();

    Remove:
          Cache.Remove("Item");