Messaging & Event-Driven

Messaging and event-driven architecture are used to build scalable, loosely coupled, and reliable distributed systems. Instead of services communicating only through direct API calls, they can exchange messages or events using technologies such as Kafka or RabbitMQ. This helps systems handle asynchronous processing, high traffic, retries, failures, and background tasks more efficiently. In this section, you’ll learn important concepts such as message queues, topics, producers, consumers, acknowledgements, retries, dead-letter queues, and event-driven communication. These concepts are widely used in microservices and large-scale backend systems.