Lab
A Cloud Guru

Tuning a Kafka Consumer

You can configure your Kafka consumers in a variety of ways in order to customize their behavior. In many production scenarios, ensuring your consumers perform well for your use case is a matter of tweaking consumer configurations. In this lab, we will work with this process hands-on. We will be provided with some consumer code and a list of issues that can be addressed by changing the consumer configuration. We will then need to identify what configuration changes should be made in order to address these issues, and we will need to implement those changes in the consumer.

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Path Info

Level

Intermediate

Duration

30m

Published

Oct 18, 2019

Challenge

Clone the Starter Project from GitHub and Perform a Test Run
1. Clone the starter project from GitHub:
```
cd ~/
git clone https://github.com/linuxacademy/content-ccdak-consumer-tuning-lab.git
```
2. Perform a test run to make sure the code is able to compile:
```
cd content-ccdak-consumer-tuning-lab
./gradlew run
```
  The code should compile, but the consumer will fail to run.
Challenge

Implement Configuration Changes to Address the Issues
1. Edit the Consumer class:
```
vi src/main/java/com/linuxacademy/ccdak/consumer/MemberSignupsConsumer.java
```
2. Increase the minimum fetch size by setting fetch.min.bytes=1024:
```
props.setProperty("fetch.min.bytes", "1024");
```
3. Send heartbeats more frequently by setting heartbeat.interval.ms=2000:
```
props.setProperty("heartbeat.interval.ms", "2000");
```
4. Fix the issue with the offset reset behavior by setting auto.offset.reset=earliest:
```
props.setProperty("auto.offset.reset", "earliest");
```
5. Run your code to verify it still works:
```
./gradlew run
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.