Apache Kafka Tutorial: Partitions & Consumer Groups

What you will learn

• Commit log, topics, partitions, and offsets
• Producer path: key, partitioner, batch, acks
• Consumer groups versus Kafka 4 share groups
• Transactional outbox and dual-write
• acks=all, ISR, and producer idempotence
• Partition keys, hot keys, and global order
• Compaction, event history, and schemas
• Transactions, and where exactly-once stops
• Rack failure, slow consumers, and rebalance safety
• Freshness SLOs, quotas, and backpressure
• Security, tiered storage, and multi-region recovery

How it works

A five-step story of why Kafka exists, a hands-on demo, live diagrams for Uber, Zomato, Netflix and payments, then 26 practice problems.

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