Event-Driven Architecture Patterns

Expert guidance for designing, implementing, and operating event-driven systems with proven patterns for event sourcing, CQRS, message brokers, saga coordination, and eventual consistency management.

When to Use This Skill

• Designing systems with asynchronous, decoupled communication
• Implementing event sourcing and CQRS patterns
• Building systems requiring eventual consistency and high scalability
• Managing distributed transactions across microservices
• Processing real-time event streams and data pipelines
• Implementing publish-subscribe or message queue architectures
• Designing reactive systems with complex event flows

Core Principles

1. Events as First-Class Citizens

Events represent immutable facts that have occurred in the system. Use past tense naming (OrderCreated, PaymentProcessed) and include all necessary context.