Domain-Driven Design Principles

Complete Guide to DDD Architecture and Patterns

Domain-Driven Design (DDD) is an approach to software development that centers the development on programming a domain model that has a rich understanding of the processes and rules of a domain. DDD emphasizes collaboration between technical and domain experts to create software that accurately reflects the business domain.

// Entity: Has identity

private readonly orderId: OrderId; // Identity

constructor(orderId: OrderId) {

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private moneyTransferPolicy: MoneyTransferPolicy

fromAccountId: AccountId,

toAccountId: AccountId,

Frequently asked questions

What is Domain-Driven Design?

// Notify other bounded contexts

How does the inventory service handle item reservations?

await this.inventoryService.reserveItems?

What role does the email service play in confirming orders?

await this.emailService.sendConfirmation?

What does a typical DDD layered architecture look like?

// Typical DDD layered architecture

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Everything above runs in your browser — open Hash Function Avalanche Visualizer and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.

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