Kafka vs RabbitMQ vs SQS: Which One Should You Choose?

Kafka, RabbitMQ, and Amazon SQS all help applications exchange messages—but they solve different problems. Learn when to use each in this practical system design tutorial. We follow an online store to explain event streaming, message routing, and background job queues. You'll learn how replay, ordering, retries, and worker failures affect your choice—and why choosing a messaging tool is only part of building a reliable system. Whether you're learning backend development, designing microservices, or preparing for a system design interview, this video gives you a clear framework for making the decision. 00:00 Introduction: What you'll learn 00:58 Why messaging exists 02:18 Three messaging models 03:29 Kafka: Partitions, consumer groups and replay 04:56 When to choose Kafka 06:02 RabbitMQ: Routing and acknowledgements 07:28 When to choose RabbitMQ 08:38 Amazon SQS: Visibility timeout and ordering 09:57 When to choose SQS 10:59 Reliability, retries and idempotency 12:35 Three practical workloads 13:48 Side-by-side comparison 14:56 How to choose the right tool 16:06 Using these systems together 17:14 Explaining your choice in an interview 18:29 Recap and practice exercise Which tool would you choose for your application—and why? Share your use case in the comments. Subscribe for more practical system design explainers. Note: The RabbitMQ comparison focuses on conventional queues. RabbitMQ Streams also supports retained history and replay. #SystemDesign #Kafka #RabbitMQ #AmazonSQS