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Introduction to/Practical Load Testing for Large-Scale Traffic Processing

I've created the '대규모 트래픽 처리를 위한 부하테스트 입문/실전' lecture, easily understandable even for non-majors and immediately applicable in practice!

(4.9) 78 reviews

868 learners

  • jscode
대용량트래픽
k6
infrastructure
performance-tuning
performance-test

Reviews from Early Learners

What you will gain after the course

  • Measuring a specific service's traffic capacity

  • System Design and Expansion Methods Due to Traffic Increase

  • How to improve performance based on load test results

  • Large-scale traffic processing method

  • Load Testing Method


🤬 Damn it, I can't do this anymore!

I'm Park Jaesung, who started development as a non-major and worked as CTO at various companies, and am currently active as an educator. I also started development as a non-major and had times when I struggled to gain experience in handling large-scale traffic.

I wanted to gain experience handling large-scale traffic, but I was at a loss as to how I could actually experience large-scale traffic. This was because there aren't many companies that generate large-scale traffic, and even if you join a sizable company, most of the time you're not given the opportunity to experience large-scale traffic handling.

So how exactly can we gain experience in handling high-volume traffic?

By utilizing load testing directly, you can indirectly experience large-scale traffic even without joining a company that handles massive traffic volumes. Through experiencing high-volume traffic, you'll be able to practice how to respond to such situations, how to design systems, and how to optimize services.

I created this course with the hope that anyone can gain 'large-scale traffic handling experience'. Through this course, I hope you become a developer who can handle large-scale traffic on your own.

✨ 4 Key Points I Focused on While Creating the Course

This is not simply a course that teaches you how to use load testing tools. We will teach you the 'thought process' step by step, such as how to interpret results through load testing in actual work environments and how to improve the performance of the entire system.

The course is structured so that even non-majors can easily gain experience in handling large-scale traffic. After taking this course, you'll be able to measure how much traffic your service can handle and determine what approaches to take for performance improvements.

I thought that if you can't apply what you've learned in real situations even after completing the entire course, then it's a poorly designed course. I tried to structure it as a practical, hands-on course that can be immediately applied to real work, rather than an academic approach that only focuses on in-depth theoretical learning.

I'll show you step by step how to conduct load testing using real-world examples. By showing you this process, you'll also learn how to design systems that can handle large-scale traffic.

👍 These people would benefit from taking this course!

Someone who is having difficulty gaining experience in handling large-scale traffic
by watching YouTube or blogs

Non-CS majors who
have difficulty understanding
complex concepts and terminology

Those who want to improve performance through load testing
in real-world work environments

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

You will be able to experience large-scale traffic. Furthermore, you will learn how to improve system performance to withstand large-scale traffic based on load testing.

🍡 Tasting

'Bottleneck Point' Class

'[Hands-on] How many requests per second can my backend server handle?' class

'[Hands-on] Diagnosing Bottlenecks Through Load Testing' lesson

Reference Notes

The class proceeds under the assumption that you have basic knowledge of AWS. Therefore, we recommend taking this course after you have learned basic AWS. 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. However, death ends with the pain of that moment. But 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 inherited miseducation.

Education can truly change a person's life in a positive way, but on the other hand, I think 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!

[[STRONG_1]][[U_2]]비전공자 출신[[/U_2]][[/STRONG_1]]으로 개발 공부를 시작했습니다. 어느 새 벌써 6년차 개발자가 되었네요! [[STRONG_3]][[U_4]]최근에는 2개의 회사에서 CTO를 역임하면서 개발자로 활동[[/U_4]][[/STRONG_3]]했었어요. 시간 여유가 될 때마다 코딩 강의, 회사 개발 컨설팅, 강연 등을 해왔습니다.

The number of students I've taught has now exceeded 24,000 (as of July 2025)! Every time I teach my 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 for Kakao Pay, Yanolja, and Woowa Brothers have been produced)

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 giving and sharing 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)' for reference!



🐶Get course discounts with roadmaps

➡ Performance optimization for handling large-scale traffic (https://inf.run/ecBS1)

Recommended for
these people

Who is this course right for?

  • Backend developer aiming for an IT service company

  • Job seeker aiming for distinctive qualifications

  • Wanting to experience large-scale traffic in real projects

  • Those wanting to quickly learn load testing for practical use.

  • Those who simply find large traffic handling difficult

Hello
This is

29,009

Learners

2,000

Reviews

707

Answers

4.9

Rating

16

Courses

 

[Sites]
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[Career]
現) JSCODE - 대표 멘토, CEO
前) (주)트라이포드랩 - CTO
前) (주)온리원유니버스 - CTO
前) 달리(DALY) - CTO
前) 팀메이트(Teammate) - CEO

 

[Books]

『Do it! JSCODE의 AWS 입문』, 이지스퍼블리싱 (2025.05)

 

[ETC]
- 기업 대상 개발 컨설팅 및 코딩 교육 활동

Curriculum

All

43 lectures ∙ (3hr 27min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

78 reviews

4.9

78 reviews

  • songsme28861502님의 프로필 이미지
    songsme28861502

    Reviews 11

    Average Rating 5.0

    5

    31% enrolled

    • jscode
      Instructor

      Thank you, Samuel Song, for leaving such a great review! :) Best of luck with the rest of the course!!

  • aammddkkzxc님의 프로필 이미지
    aammddkkzxc

    Reviews 26

    Average Rating 5.0

    5

    93% enrolled

    It was good to get a big picture and a rough sense of the flow.

    • jscode
      Instructor

      You worked so hard to complete the whole lecture, Sanghyung~~!! If you've grasped the big picture and the general flow, you'll be able to quickly learn the detailed content even if you study it! Try to learn by adding a little bit to what I told you~~~~!!

  • mine52106752님의 프로필 이미지
    mine52106752

    Reviews 2

    Average Rating 5.0

    Edited

    5

    95% enrolled

    This was a lecture I really needed, and I was able to study a lot in a short amount of time, which was great! It was the best lecture ever 😁.

    • jscode
      Instructor

      Thank you, Min-su! I'm so proud to hear it was the best lecture~!! I hope you can make good use of what you learned in real-world practice 😊😊

  • wisehero님의 프로필 이미지
    wisehero

    Reviews 56

    Average Rating 4.7

    5

    100% enrolled

    I'm leaving with some good insights.

    • jscode
      Instructor

      Thank you, wisehero! I hope you can apply the insights you've gained to your actual projects or work.

  • parktjdghks8707님의 프로필 이미지
    parktjdghks8707

    Reviews 4

    Average Rating 5.0

    5

    100% enrolled

    As a complete beginner with no prior knowledge of load testing, this lecture was easy to understand!! I'm looking forward to and will go listen to Jaesung's other lectures as well 😊😊

    • jscode
      Instructor

      Sung Hwan, it must have been very unfamiliar since it was your first time, but I'm so glad you understood it well! Now that you've built a solid foundation, I believe it will be easier to move on to the next step 👍🏻 I will make sure the other lectures meet your expectations. Thank you 😊

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