Łukasz Chrząszcz

Digging deep in tech so you don't have to

What happens when a new consumer joins the group in Kafka?

Rebalancing in Apache Kafka

Ever wondered how Kafka manages rebalancing? How are partitions assigned? Let's find out!

Posted by Łukasz Chrząszcz on Sunday, July 14, 2019

What does the heartbeat thread do in Kafka Consumer?

Behavior of Kafka consumer's background thread

We will dig into the heartbeat thread code to discover what it does and how it communicates with the rest of the consumer.

Posted by Łukasz Chrząszcz on Saturday, June 22, 2019

What happens when you call poll on Kafka Consumer?

Internals of Kafka consumer initialization and first fetch

We will create a new consumer, subscribe to a topic and execute first poll, describing what happens step by step.

Posted by Łukasz Chrząszcz on Sunday, June 16, 2019

Kafka 101

Introduction to Apache Kafka

Let's explore Kafka basics. We will discover what it does, what problem does it solve, and we will explore simple message passing from producer to consumer.

Posted by Łukasz Chrząszcz on Sunday, May 26, 2019

Introduction to Docker

Docker in 5 minutes

Grasp the idea of what Docker is and how it works. We'll setup basic container with Ubuntu and run some commands on it.

Posted by Łukasz Chrząszcz on Saturday, May 18, 2019

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