Domain-Driven Design (DDD) is a software development approach that prioritises the core business logic. It’s gaining traction in the era of microservices, where systems are split into smaller, independent services. Microservices can be complex, but DDD can help manage this by focusing on the domain logic and business rules.
DDD involves creating a ubiquitous language, a shared language between developers and domain experts. This language aids in understanding the business domain and aligning the software model with it. Entities, value objects, and aggregates are key building blocks in DDD. Entities are objects with a distinct identity, value objects are immutable and don’t have an identity, and aggregates are clusters of objects that are treated as a single unit.
Strategic design in DDD involves dividing the system into bounded contexts, each representing a different part of the business domain. These contexts can be microservices, which should be loosely coupled and highly cohesive.
Event-driven architecture is another concept in DDD, where domain events trigger changes in other parts of the system. This approach helps in maintaining data consistency across microservices.
In conclusion, DDD can be a powerful tool for managing the complexity of microservice-based systems, focusing on business logic rather than technical details.
Go to source article: https://medium.com/it-dead-inside/domain-driven-design-in-the-era-of-icroservices-de2be01821ed