Practical Elasticsearch Introduction for Immediate Use (Search Optimization Edition)

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

I started development as a non-major and worked as CTO at various companies, and now I'm working as an educator. I'm Park Jaesung. I also started development as a non-major and there was a time when I was studying Elasticsearch.

However, when I actually tried to learn Elasticsearch, 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 I created this course to show you the basic syntax used in Elasticsearch and how to use frequently used features. I won't just teach you how to use Elasticsearch, but I'll help you develop the ability to apply Elasticsearch in various situations. By learning this way, you'll be able to apply it on your own after finishing the course, and only when you can apply it yourself will you be able to adapt Elasticsearch to fit your projects.

The goal of the lectures I pursue is that after you finish listening to all the lectures, you - not me - will be able to effectively use Elasticsearch 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 immediately apply it in real situations.

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

✨ 4 Key Points I Focused on While Creating the Course

👍 Great for these types of people!

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

🍡 Tasting

✔ Reference Notes

The class proceeds under the assumption that you have basic knowledge of Spring Boot, Spring Data JPA, RDB(Mysql), Docker. If you encounter any parts that are difficult to understand while studying, please feel free to ask questions immediately 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.

Wrong education can lead you to an unwanted company, receive a smaller salary than expected, and potentially suffer for the rest of your life. Not only that, but the wrong education you received can also be passed down to your children as a legacy of poor education.

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 presentations.

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 slightly better lives.

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!