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Event-Driven Architecture: Patterns and Implementation
Build reactive systems with event-driven architecture. Event sourcing, CQRS, and message brokers.
Ankit 14 min readFebruary 4, 2025
Event-Driven Architecture
Design systems around events for loose coupling and scalability.
Key Patterns
Event Sourcing
- Store events, not state
- Complete audit trail
- Temporal queries
CQRS
- Separate read/write models
- Optimized queries
- Scalability
Saga Pattern
- Distributed transactions
- Compensation logic
- Eventual consistency
Message Brokers
- Apache Kafka
- RabbitMQ
- AWS SQS/SNS
Benefits
- Loose coupling
- Scalability
- Flexibility
- Resilience
Challenges
- Complexity
- Eventual consistency
- Debugging
- Ordering
Conclusion
Event-driven architecture enables building highly scalable, resilient systems.
Event-DrivenCQRSArchitecture
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