Kafka Practice
Learn Kafka hands-on with real producers, consumers, topics, offsets, groups, transactions, streams, and operations
Java 25
Node.js 24
Python 3.13Topics & Partitions
Create, configure, grow and clean up topics through the Admin API. Learn how partition counts and per-topic settings shape everything downstream.
First Topic
Topic Configuration
Partition Counts & Growth
Topic Estate Bootstrap
Producers & Records
Send records the broker actually confirms, with keys, headers and explicit timestamps. Configure a producer that is shared, safe under concurrency, bounded and closed cleanly.
Fire and Confirm
Headers, Keys & Timestamps
Producer Configuration & Lifecycle
Ingest Gateway
Consumers & Polling
Build consumer loops, read chosen partitions without a consumer group, seek by offset and by time, and size polls. Survive malformed records without losing the consumer.
First Consumer Loop
Assign, Seek & Position
Deserialization & Poll Sizing
Replay Console
About this path
This path starts with topics and partitions and goes on to producers and consumers. You work through a Kafka client in Java, Node.js or Python, so you should be able to write a small program in one of them. No earlier Kafka experience is needed. The consumer module covers reading data back reliably: the poll loop, seeking to a position, and replaying a topic.
Frequently asked questions
4What will I practice in this path?
3 modules: Topics & Partitions, Producers & Records and Consumers & Polling.
How many challenges are there, and how hard are they?
12 challenges, all easy.
What does this path run on?
You can work in Java 25, Node.js 24 or Python 3.13.
Do I need to install anything?
No. Every challenge runs in a browser-based IDE with everything already set up, and your code is graded automatically against a test suite.