Software Architecture in Practice

Read this section to learn about the main elements, patterns, quality attributes, and principles of software architecture, including encapsulation, polymorphism, and dependencies. Pay attention to design patterns and their importance in software design.

7. Mental Model for Applications

Domain Driven Design

Helps classify components into logical categories to orchestrate certain behaviors
Works well with modeling business applications

Domain Driven Design Objects

Entity - objects with distinct identities and has a lifecycle
Value Objects - immutable objects that has value but has no unique identity
Domain Event - a record of something that happened in the software, can be used to publish to components that are interested
Aggregate - cluster of objects that can be related and treated as a single unit
Service - business logic operations that are stateless
Repositories - deals with the entities and value objects lifecycle
Factories - encapsulates creation of complex entities, aggregates and value objects