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I'm preparing for an upcoming interview and keep seeing Kafka and RabbitMQ mentioned side by side. Beyond the obvious that Kafka is built for high-throughput streaming, I'm trying to understand the fundamental architectural distinctions that interviewers actually care about.
Core Architectural Differences
RabbitMQ is fundamentally a message broker with a focus on routing and delivery guarantees. Kafka, on the other hand, is a distributed commit log. This means Kafka retains data for a configurable period, which changes how consumers interact with it.
Delivery Semantics
- RabbitMQ: Typically emphasizes point-to-point or publish/subscribe patterns with strong delivery guarantees.
- Kafka: Optimized for throughput and sequential reads, often using a pull-based consumer model.
How does this log-based approach affect latency and replayability in real-world scenarios?
