Event-Driven Architecture Patterns
Event-driven architecture decouples systems through asynchronous communication, enabling scalability and flexibility.
Core Concepts
- Events: Immutable facts about what happened
- Producers: Emit events when state changes
- Consumers: React to relevant events
- Broker: Routes events between parties
Common Patterns
- Event sourcing for audit trails
- CQRS for read/write separation
- Saga pattern for distributed transactions
- Event notification for loose coupling
Technologies
- Apache Kafka for streaming
- RabbitMQ for messaging
- AWS EventBridge for cloud-native
Start simple—complexity emerges as systems grow.