kafkacat
A lightweight, non-JVM command-line tool for producing, consuming, and inspecting Apache Kafka messages.
What is kafkacat?
kcat (formerly kafkacat) is a versatile command-line utility that acts as a netcat-like interface for Apache Kafka. It enables users to produce messages to Kafka topics from standard input, consume messages from topics to standard output, and inspect cluster metadata without requiring a Java Virtual Machine (JVM). This makes it an essential tool for debugging, testing, and operating Kafka data pipelines.
Kafka developers and administrators who need a lightweight, non-JVM tool for command-line interaction with Kafka clusters, such as for debugging, testing, or scripting data operations.
Developers choose kcat for its fast, lightweight, and statically linked binary (around 150KB), which provides a straightforward CLI without JVM overhead. It offers unique features like Avro deserialization with Schema Registry, transactional and idempotent production, header support, and even an in-memory mock Kafka cluster for testing.
Overview
Generic command line non-JVM Apache Kafka producer and consumer
Use Cases
Best For
- Debugging and inspecting Kafka cluster metadata and topic partitions from the command line.
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