Domain-Driven Design (DDD)

DDD is a software design approach focusing on modeling software to match a domain according to input from that domain's experts. It is essential for tackling high complexity in the heart of software.

When to Use

• Complex business domains (e.g., Insurance, Banking, Logistics) where logic is intricate.
• When there is a communication gap between developers and business experts.
• decomposing a Monolith into Microservices (defining boundaries).

Quick Start

// Aggregate Root
public class Order {
    private OrderId id;
    private Money totalAmount;
    private OrderStatus status;
    private List<OrderItem> items; // Aggregates items