Kafka Intro: Hands-on

🤬 Why is Kafka so difficult to study on your own?!

Starting development as a non-major and working as CTO at various companies, I am currently active as an educator, Park Jaesung. I also started development as a non-major and had a time when I was studying Kafka.

However, when I actually tried to learn Kafka, it was difficult to find courses that were structured to allow for easy and quick learning that could be applied in real-world situations. As a result, I had a hard time relying only on blog posts when I first started learning. Even the official documentation was complex and difficult, making it not easy to learn.

So even for those who are studying Kafka for the first time, I created a course that allows you to quickly learn Kafka and apply it directly in real-world situations. This course won't simply list Kafka's concepts and features, but will focus on Kafka's core concepts and show you how to apply them in projects. By learning this way, after completing the course, you'll be able to apply it on your own, and only when you can apply it yourself will you be able to adapt Kafka to fit your own projects.

The goal of the lectures I pursue is that after listening to all the lectures, you (not me) will be able to use Kafka effectively in real-world situations. If you've listened to all of this lecture but don't understand what it's about, don't know how to use it in practice, and nothing remains in your head, then I think it's a poorly made lecture. If you've definitely learned something, you should be able to apply it immediately in real-world situations.

I hope that through this course, you won't just become someone who only knows Kafka theory well, but rather a developer who can actually utilize Kafka in personal projects or in the field. See you in the course.

✨ 4 Key Points I Focused on While Creating the Course

👍 These are the people who would benefit from taking this course!

🙊 What happens after you finish listening to this entire lecture?

🍡 Tasting

✔ Reference Notes

1. Since the practice is conducted using only services provided by AWS's free tier, costs are almost negligible.

2. Kafka version 4.0 was released in March 2025. This course is conducted based on Kafka version 4.0.

3. The class will be conducted under the assumption that you have basic knowledge of AWS EC2, Spring Boot, Spring Data JPA.

4. If you encounter any parts that are difficult to understand while studying, please feel free to ask questions right away using the Q&A board or 1:1 open chat room😊

🚨 Make sure to check what kind of person is providing the education!

If you meet the wrong doctor, you might face death because your illness can't be cured at that moment. But death ends with the pain of that moment. However, if you meet the wrong teacher and receive poor education, you will suffer throughout your entire life.

Due to poor education, you may end up at an unwanted company, receive a smaller salary than expected, and suffer for the rest of your life as a result. Not only that, but the poor education you received can be passed down to your children as well.

Education can truly change a person's life in a positive way, but on the other hand, it can also completely ruin a person's life. That's why I believe education carries such heavy responsibility.

Therefore, please check who is providing the education, what kind of person they are, and what path they have walked, and make a careful judgment.

👋 Hello!
I'm finally introducing myself now ( ⸝⸝•ᴗ•⸝⸝ )੭⁾⁾

Hello!

I started studying development as a non-major. Before I knew it, I've already become a 6-year developer! Recently, I worked as a developer while serving as CTO at two companies. Whenever I had time, I've been doing coding lectures, company development consulting, and giving talks.

The number of students I've taught has now exceeded 24,000 (as of July 2025)! Every time I teach various students, I always feel the same way - I can't forget the sense of fulfillment from education, so I plan to continue providing education consistently on Inflearn.
(* Among students, successful candidates have been produced for Kakao Pay, Yanolja, and Woowa Brothers)

Just as I received a lot of help during difficult and challenging times, I wanted to become someone who could help many other people as well. And I felt most proud and happy when the value I created through development had a positive impact on others.

For these reasons, I hope that by sharing and giving what I have worked hard to achieve, those people can live a slightly better life.

Thank you!

🏆 Course Best Review

** This is a review written for the previously created .

🚌 Feeling overwhelmed about what order to take the courses?

'[2025] Essential Curriculum for Getting a Job as a Backend Developer (IT Service Companies)' Please refer to this!

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➡ Building Backend Servers with Microservices (MSA) (https://inf.run/7VuDs)