seniorNode.js
Designing a Message-Driven Architecture with RabbitMQ/Kafka
Updated May 4, 2026
Short answer
Use a Message Broker to decouple services. Commands are sent to specific queues, while Events are published to 'Topics' for multiple subscribers.
Deep explanation
In a senior architecture, Service A publishes an event UserSignedUp to a broker. Other services subscribe to that event, allowing for 'Fire and Forget' and ensuring resilience if a service is down.
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