Domain Driven Design Course [verified] Site

4.1 Entity – Identity, mutability, equality 4.2 Value Object – Immutable, self-validating, no identity 4.3 Aggregate & Aggregate Root – Transactional consistency boundary, invariants 4.4 Domain Service – Stateless operations not belonging to an entity/value object 4.5 Domain Event – Something meaningful that happened

addProduct(productId: string, quantity: number, price: Money) { if (this.status !== 'Draft') { throw new Error('Cannot modify confirmed order'); } const line = new OrderLine(productId, quantity, price); this.lines.push(line); } domain driven design course

7.1 CQRS (Command Query Responsibility Segregation) 7.2 When to use CQRS (and when not to) 7.3 Event Sourcing basics: event store, replay, snapshot 7.4 Combining DDD + CQRS + ES 4.1 Entity – Identity

Completing a course on Domain-Driven Design doesn't result in a certification that hangs on a wall. It results in a permanent change in how you view your job. equality 4.2 Value Object – Immutable