How do you design aggregate roots for complex business rules?
Domain-Driven Design (DDD) is a way of creating software that focuses on the core business problems and the language used by domain experts. One of the key concepts in DDD is the aggregate root, which is an entity that encapsulates a group of related objects and enforces the business rules and invariants for them. But how do you design aggregate roots for complex business rules? In this article, we will explore some guidelines and examples to help you answer this question.
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Define aggregate boundaries:Setting clear limits on your aggregates ensures consistency and integrity. Aim for the smallest scope that still encompasses essential functions and rules, which helps maintain system stability without compromising flexibility.
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Small aggregates, big impact:Keep your aggregates small to reduce data contention and boost code clarity. Smaller aggregates mean transactions are more straightforward, leading to a more maintainable and scalable system.