Fundamental differences between Kafka and RabbitMQ.

Kafka and RabbitMQ are message queuing systems, but with different architectural approaches and use cases.

• Kafka is a distributed data streaming platform focused on high throughput and message storage in topics with re-read capability. Suitable for processing large data streams, analytics, and event-driven systems.

• RabbitMQ is a classic message broker supporting various exchange models (queues, topics, routing). It is oriented towards guaranteed message delivery and complex routing scenarios.

Key differences:

• Kafka stores messages on disk and allows consumers to read them multiple times, RabbitMQ deletes messages after acknowledgment.
• Kafka scales better for large data volumes, RabbitMQ is more convenient for complex routing and integrations.

Example: if you need a logging system with the ability to analyze history, Kafka is better; if reliable task delivery between services is required, RabbitMQ.