A core aspect of the application is the ability to trace activity over time between operations. Through past experience, I have come to the realization that these operations might require numerous operations against the data store, at an performance cost. I order to optimize the process, and in memory structure will be emploed.
The tank tracing and inventory calculation functions will reside in a dedicated project. Support for trace operations and current inventory levels are serviced by REST endpoints, however requests for composition calculation operations are handled asnychronously via a messaging bus as they have a potential to result in a significant delay before execution is complete.
Next we create the tracing and calculation routines themselve