Apache Kafka Interview Questions and Answers

Prepare for your next big data or backend development interview with these top 25 Apache Kafka interview questions and answers.

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🧾 Introduction

Apache Kafka has become the go-to distributed messaging system for handling real-time data streams in large-scale, event-driven systems. Whether you’re applying for a backend, big data, or DevOps role, Kafka is a must-know technology.

In this article, we’ve compiled the top 25 Apache Kafka interview questions and answers, suitable for freshers, intermediate, and experienced developers. Each question comes with a clear explanation and real-world context to help you ace your Kafka interview.

✅ 1. What is Apache Kafka?

Apache Kafka is a distributed, fault-tolerant messaging system used to build real-time data pipelines and stream processing systems. It’s designed to handle high throughput and low-latency data communication between producers and consumers.

✅ 2. What are the key components of Kafka?

• Broker: A Kafka server that stores data and serves client requests. Kafka clusters consist of multiple brokers.