| Function | storm_cache_factory | Return a Storm Cache of the type and size specified in dbconfig. | 
| Function | get_connected_store | Retrieve a store from the IZStorm Utility and ensure it is connected. | 
| Class | BaseDatabasePolicy | Base class for database policies. | 
| Class | DatabaseBlockedPolicy | IDatabasePolicy that blocks all access to the database. | 
  
| Class | MasterDatabasePolicy | IDatabasePolicy that selects the MASTER_FLAVOR by default. | 
  
| Class | SlaveDatabasePolicy | IDatabasePolicy that selects the SLAVE_FLAVOR by default. | 
  
| Class | SlaveOnlyDatabasePolicy | IDatabasePolicy that only allows access to SLAVE_FLAVOR stores. | 
  
| Function | LaunchpadDatabasePolicyFactory | Return the Launchpad IDatabasePolicy for the current appserver state. | 
| Class | LaunchpadDatabasePolicy | Default database policy for web requests. | 
| Function | WebServiceDatabasePolicyFactory | Return the Launchpad IDatabasePolicy for the current appserver state. | 
| Function | _now | Return current utc time as a datetime with no timezone info. | 
This is a global method to allow the test suite to override.
| Raises | storm.exceptions.DisconnectionError | On failures. |