A Taste of Spring Boot Backend Vibe Coding: Know This and Leave Work on Time

Hello, students.
I am Choi Ho-sung, the "Easygoing Developer."

I have opened a free lecture introducing the 'Thinking Skills Training' system and related content to help those who are starting their programming studies.

[Thinking Skills Training System]
https://www.nullnull.co.kr/thinking-lab

[CS Literacy: Thinking Fundamentals for All Languages]
https://www.nullnull.co.kr/courses/23
https://inf.run/xJhzY

I expect that through this course, you will be able to eliminate a significant portion of redundancy across all programming languages. From now on, all courses I create (including revisions) will assume that you have completed this thinking skills training.

If you already have programming experience, try solving them with a light heart over the weekend. If you have a strong will to learn programming, including Vibe Coding, please make sure to "definitely" complete the Thinking Skills Training course. The course is free, and you can take it both on Inflearn and on my own platform (nullnull.co.kr).

And soon, we will be conducting the 'Learning Networks with AWS: From Theory to Practice' course as an online live class. If you are interested, please refer to nullnull.co.kr or the announcements on my YouTube channel. Official recruitment may begin as early as tomorrow (April 24, 2026), and although it is an online live session, the number of participants may be limited.

Thank you as always. 😄
Sincerely, NullNull Developer

Hello, students. This is Hosing Choi, the "Leisurely Developer."

I have refined and created the Vibe Coding lecture until I reached the conclusion that it was sufficient by my own standards. However, now that it's finished, it seems that it has effectively become an AWS lecture rather than a Vibe Coding lecture.

If you want to create your own service based on AWS, I believe this course will be sufficiently helpful. In fact, the nullnull.co.kr service I created is being operated with the following structure.

The AWS Amplify frontend is connected to GitHub for automated deployment, and security is ensured by combining S3 bucket storage and ALB through CloudFront with WAF attached. Lecture videos are converted for streaming using the MediaConvert service, uploaded to a Private S3 bucket, and provided as a streaming service via the Pre-signed URL method. The backend runs on an EC2 instance based on 2 vCPUs + 2GB RAM. Finally, the PostgreSQL DB is being served through RDS.

You can think of this course as covering everything in this diagram except for MediaConvert. I can confidently say that if you truly need your own service or a production-grade portfolio that works properly, you should not miss this course!

I hope this post serves as helpful information rather than just an advertisement, and I will continue to greet you with great lectures in the future. Thank you always. 😄

Hello students.
I'm Choi Ho-seong, the laid-back developer.

Another year is coming to a close. As always, I'm wrapping up an eventful year and preparing to welcome the new year. While we can't know the future, I think it's good to have hope for the coming new year. 😄

In that spirit, I'm running various events (50~100% discount coupons) on my YouTube channel (https://www.youtube.com/@nullnull_not_eq_null). To participate in the event, simply leave a comment on the video linked below. When leaving a comment, choose the course you want from my courses and request a coupon. Once I see your comment, I'll reply with a coupon. The discount rate is random. 😄

This could be an even better choice than Black Friday discounts. Therefore, I recommend that you watch the video and participate. By watching the video, you can also learn how to take three courses for free, so please be sure to watch it and participate in the event.

Thank you as always. 😄
From NullNull Developer