spotbidprofile.txt

* Customer (id, email address, display name)

* ShoppingCart (contain Products, discounts)

SpotBidMarketItem Products (has price)

SpotBidProfile (AWS::SpotFleetConfig)
- user_id
- display_name
- instance_type (c4.large)
- instance_count_min
- instance_count_max
- ami_id
- subnet (default)  
- region (us-west-2)
- vpc (default)
# active? - iff SpotBidRequests.any?{ active? running? } 
- Instances.active { id : 1 } 
- SpotBidRequest ( once started )
-- aws_instances  (max active in this collection is instance_count)
  [ AwsInstance(aws_instance_id) ]
  [ AwsInstance(aws_instance_id).appendState(Monitored(date, status) ]
  [ AwsInstance(aws_instance_id) ]
  [ AwsInstance(aws_instance_id,created_at).appendState(ReplacementFor(aws_id)) ]

-- Instances
     SpotBidRequestStatus  

ShippingLabel (ShippingAddress)