Item 

Description 

Creation  

Controls when an instance of this module is created:
On Demand creates the instance only when it is referenced.
Always creates the instance on startup.  

Caching  

Controls when a module is destroyed. At runtime, the instance of this module can be either kept in cache, or removed from memory when the request has been serviced.
Cache Instance keeps the instance in memory even if there are no current references to it.
Destroy Instance allows the server to remove the instance from memory if there are no references to it.