Kafka Scaling Explained | Partitions, Consumer Groups & Rebalancing (Ep 06)
In this video, we explore Kafka scaling scenarios with hands-on demos, focusing on how Kafka scales by increasing partitions and consumers.
We walk through practical examples to show:
What happens when you increase the number of partitions
What happens when you add more consumers to the same consumer group
How Kafka distributes partitions across consumers
Why adding more consumers does not always improve throughput
Real rebalancing behavior during scaling
This video helps you build a clear, practical understanding of Kafka scaling, going beyond theory and interview answers by showing Kafka’s behavior live.
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Chapters:
00:00:00 Introduction & Agenda
00:03:20 Kafka Cluster Startup
00:04:40 Live Demo: Kafka Scaling
00:12:14 Scaling Scenarios Explained
00:18:42 Edge Scenarios
00:27:47 Conclusion