implementing-domain-events

What problem does it solve?

This Skill provides a comprehensive guide to implementing a domain event bus architecture, enabling decoupled communication between different parts of your application and ensuring transactional safety.

Core Features & Use Cases

• Event Registration: Define and register domain events within your aggregates.
• Event Publishing: Safely publish events after transaction commits using transaction.on_commit.
• Event Handling: Create and register handlers for domain events.
• Use Case: When a new user is created, automatically publish a UserCreatedEvent that triggers an email notification and updates a search index, all without the user creation logic directly knowing about these downstream processes.

Quick Start

Follow the guide to implement domain events by defining an event, registering it in an aggregate, and publishing it from a service after a transaction commit.