In this chapter, we have taken the first step in developing a robust coding convention to manage and structure the coding complexities of an enterprise application. This first layer encapsulates your application's business process logic in an agnostic way, in a way that allows it to be consumed easily across multiple Apex entry points; both those required today by your application and those that will arise in the future as the platform evolves.
We have also seen how the Unit Of Work pattern can be used to help bulkify DML statements, manage record relationships and implement a database transaction, and allow your Service layer logic to focus more on the key responsibility of implementing business logic. In the upcoming chapters, we will see how it quickly becomes the backbone of your application. Careful adherence to the guidelines around your Service layer will ensure it remains strong and easy to extend.
In the next chapter, we will look at the Domain layer, a pattern that blends...