OutputCache attribute

OutputCache Attribute is used to cache the content returned by a controller action method, so that, the same content does not need to be generated each and every time the same controller action is invoked. 

[ChildActionOnly]
[OutputCache(Duration = 10)]
public string GetEmployeeCount()
{
    return "Employee Count = " + db.Employees.Count().ToString() + "@ " + DateTime.Now.ToString();
}