Core Network Theory to Finish by Memorizing - Application

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

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

Java course has been completed and we've opened Relaxed Developer's Spring Pre-learning Complete Course Roadmap for Backend Developer Employment by combining existing CS theory. And we've also prepared an event!

For the first 100 people, a roadmap-exclusive 50% discountis provided. Additionally, the web service-related content that was included in the existing network fundamentals course has been separated into a standalone course and opened, and it will be provided free of charge to the first 100 people.

🧭The One Map Every Web Developer Must See

And this course is the first course I've participated in through the marketing partners program. Therefore, if you promote this course and it leads to a purchase, partners will earn revenue. Please refer to the link below for information about the Inflearn Partners program.

https://inf.run/ATd7m

I will now be preparing Spring lectures. I will share the progress publicly so you can check it on my YouTube channel (https://www.youtube.com/@nullnull_not_eq_null).

I am always grateful and will continue to greet you with good lectures. Above all, I will do my best to help those who hope for employment achieve the results they desire. Thank you always. 😄

From a Relaxed Developer

Hello students,
My name is Ho-seong Choi, a relaxed developer.

We are offering a 25% discount to celebrate the new spring of 2023. The discount starts today (April 1, 2023) and ends on the 14th.
I am currently preparing lectures on Windows system programming, introduction to C, and introduction to C++.
I'll probably open a new systems programming course towards the end of the sale.

This is a discount for office workers who want to spend a lazy spring day with programming.
I hope you make good use of it.

Then I will greet you with a new lecture soon.

Thank you always.
Choi Ho-sung's dream.

Hello students. I am Ho-seong Choi, a developer with a lot of space. ^^

CS-based theory lectures on networks, operating systems, CS knowledge, cryptography, etc. are going smoothly thanks to your good evaluations. I would like to take this opportunity to express my gratitude.

And then I started teaching C/C++ programming, which is my main job. It is an intermediate course that helps those who have studied the C language at least once to move on to the next level. It covers various topics such as multithreading, compiler theory, framework principles, reversing, and security.

[C Programming That I Think Back On]
https://inf.run/SHPp

It opened before the Lunar New Year holiday in 2023, and a 30% discount is applied across the board for the first month . It contains topics that will be of interest to anyone interested in programming skills in C/C++ , so please refer to it.

Once again, thank you very much for your support.
I wish you a happy new year in 2023. See you in class. ^^

thank you
Spacious developer olympic