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Workflow-Based Large-Scale Traffic Processing Techniques with Kakao Developers [ By. Non-CS Major & Kakao Developer ]

How to Handle Explosive Traffic Growth? Learn to build resilient and flexibly scalable architectures through practical design patterns based on EDA (Event-Driven Architecture) using Kafka, Spring, CDC, and Temporal. Explained clearly and simply with real-world experience from Kakao developers, making it understandable even for non-majors. A hands-on focused course covering real-time data flow, event processing, and microservice integration all at once!

(5.0) 8 reviews

216 learners

  • Hong
실습 중심
백엔드
백엔드이해하기
자격증
시험
Spring
Kotlin
MySQL
Kafka
EDA

Reviews from Early Learners

What you will learn!

  • Event-Driven Architecture (EDA) Design and Patterns

  • Kafka-based Message Queue and Asynchronous Data Pipeline Construction

  • Change Data Capture (CDC) and Real-time Data Synchronization Strategies

  • Distributed Workflow Orchestration and State Management Using Temporal

  • Spring Boot-based Asynchronous Processing and Microservice Integration Design

  • Modern Functional Programming Techniques Using Kotlin

Traffic suddenly surged.. The server load and all modules went down, what should I do?? 🤔

❗This content is from an actual conversation.❗

😄Hong: By any chance, are you thinking about workflows and do you know about them??

😁 Kakao : Yeah yeah I know, are you talking about something like Airflow?? So you're finally interested in workflow tools now. Your mentor is pleased.

😁 Startup Developer: Hey, I don't think that's it. Aren't you talking about task management at the client level, not that?

😄Kakao : Oh you're talking about something like Netflix Conductor, I use that often

😄 Hong : So I've been using that lately, and this thing is really good

😄Kakao : Yeah, if you do that, you can handle all the complex stuff through abstraction?? It's honestly amazing. Not many people probably know about it, but it's grown a lot. How did you find out about it?

😁 Startup Developer : Right, they were originally a complete newbie

😄Kakao : If you use this, even when traffic suddenly spikes due to events or something, it's really stable because it's event-based. I use something else at my company, but honestly, it's really good to know

😄 Hong : You should have let me know if you knew ㅡㅡ Didn't we agree to train students?? Anyone who wants to make this together

😄Kakao : I'm going honestly, even people working at Kakao often don't know much about it, so I wondered why they wouldn't know. Since I've used it myself, I'm participating. There's also an open source called Temporal

😁 Startup Developer: I'm too lazy, so I'll just use tackle detection

😁 Toss : Oh what's this?? I briefly looked at the site and Temporal seems interesting too?? I think it would be good to introduce it. If you make a course, I'll buy it and watch it

😄Hong: 😆😆😆😆😆 I'll invite you, let's try making it once

What are some chronic issues with architectures like EDA and MSA, and what implementation methods are there for safety?? 🤔

Simply receiving and processing events?? This is a concept that many people already know and handle. But what happens if this event fails?? Or how do we manage long code logic??


The answer lies in workflow orchestration. You can modularize and eventize business logic or data processing, allowing you to implement business logic with EDA-based code even when traffic surges. What if all of these processes - including monitoring and safe retry mechanisms - were supported through a single platform?? 🤷

Methods to complement modern MSA and EDA-based architectures, as well as ways to eventize business logic and manage it safely - senior developers and I have gathered together to share all our know-how publicly.


Rather than a boring lecture that just lists theories, I've prepared this as a practical guide that allows you to completely master the core features of workflow-based design by examining the operational processes together. 🚀

What makes this course special

📌Event offering 100 coupons

We would like to select 50 people from those who purchase during the mega sale period and provide them with 2 coupons each offering 50% off

📌Lecture content that continues to be added based on your questions

The lectures in Chapter 8 will continue to be expanded based on the questions you ask. Whether they are questions about the lectures or unrelated questions, if you ask many questions, we will select useful ones and provide additional content on related topics exclusively to students for free.

  • Please refer to the (Free) course enrollment prerequisites and reference materials.

Features of this course

📌 A comprehensive course covering MSQ(Kafka), CDC(MySQL), and Temporal(workflow)

* We don't simply use just one platform. You can learn about realistic platform utilization by also leveraging additional platforms that are essential for building EDA and MSA.

📌 Platforms actually introduced and used by senior developers in real-world practice

* Like the conversation at the beginning, you can learn about platforms that even developers at Kakao don't know well, and gain competitive advantages accordingly.

📌 Rich course structure with approximately 50 diagrams and lecture summary files

* This is not just a lecture that explains things with words alone, but also provides actual source code, diagrams, sequence diagrams, and additionally simple summary files of the lecture content.

📌 The shortcut from junior to senior..! System Design

* You will learn about the major drawbacks of architectures that are currently in the spotlight in the industry, such as EDA and MSA, and the design approaches to maintain stability in response to these issues.

* When utilizing a Database, you will also learn about real-time data processing techniques.

The course covers these topics. 🧩

* Real-time Data Synchronization Concepts and Necessity

* CDC Pattern with Kafka + Debezium

* Docker, how to build environments using lightweight images

* Why do we prefer Docker over Virtual Machines??

* Basic yet core concepts of Kafka

* Basic Concepts of Kafka Producer & Consumer

* Message Delivery Guarantee in Kafka

* Core CDC Basic Concepts and Necessity for Real-time Synchronization

* Why is MySQL Binary Log-based CDC effective?

* Binary Log-based CDC Implementation Platform Debezium

* Workflow for stable production server

* Temporal's Core Concepts: Workflow and Activity

* Implementing Kafka and Workflow with Spring Boot and Kotlin

* MySQL Table Creation and Kafka Connector Configuration Methods

This is recommended for these people 👨‍🏫

🎯 Non-CS major developers who want to challenge themselves with large-scale traffic system design

🎯 For those who have heard about Kafka, CDC, and Temporal but didn't know the specific design methods

🎯 Backend developers at startups/large companies who are concerned about traffic scalability and fault resilience

🎯 Those who want to learn workflow-level service design beyond simple microservices

Related Resources 🚀

The person who created this course 🤭

  • A developer who started as a non-major and is currently working as a platform backend developer in Pangyo

  • The goal is to teach realistic development methods and development theories, and I am a knowledge sharer who creates lectures together with capable acquaintances around me, not alone

  • A knowledge sharer who conducted an interview at Inflearn thanks to active participation

  • A computer engineering major who graduated from a university in Seoul

  • After working in the first-tier financial sector, I am currently a developer working as a backend and data engineer at Kakao

  • A developer who creates various courses with Hong and contributes to providing realistic knowledge and environments

  • The only valuable talent in this team who has experience using Workflow

Reference Notes

Practice Environment

  • java

    • Java(TM) SE Runtime Environment (build 17.0.12+8-LTS-286)

  • docker, docker-compose

    • Docker version 28.0.0, build f9ced58158

    • Docker Compose version 2.33.1

  • IDE

    • IntelliJ IDEA

  • OS

    • Apple M3 Air

This course is planned to have its discount rate adjusted over time to provide greater discounts to those who purchase early. Please take note of this.

  • 1st round (8.7 ~ 8.11): 70%.

  • 2nd Phase (8.12 ~ 8.16): 60%

  • 3rd Phase (8.17 ~ 8.20): 50%

Recommended for
these people

Who is this course right for?

  • Backend developer looking to build real-time data pipelines

  • An engineer interested in data consistency and synchronization in distributed systems

  • Developers interested in microservices architecture design

  • Developers challenging microservices and distributed system design

  • A backend developer concerned about the scalability of systems that handle large-scale traffic

  • A developer who wants to learn how to implement real-time event processing and data synchronization by integrating MySQL and Kafka

  • Non-major students and junior developers who find studying difficult as job seekers

  • A server developer experiencing real-world work while being afraid of having no practical experience

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Answers

4.5

Rating

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자기 소개

집에서 빈둥대다 개발에 흥미를 느껴 개발 공부를 시작하였고 현재는 판교에서 플랫폼 서버 개발을 담당하여 진행하고 있습니다.

 

제가 공부를 했던 방법과 실무에서 접하실 수 있는 여러가지 문제점들과 해결책을 여러분들에게 제공하고 싶어 지식공유자 활동을 이어나가고 있습니다.

 

강의는 오로지 저만의 지식을 통해 만들어지지 않습니다. 모든 강의는 함께하시는 분들이 계십니다.

 

지식공유자 경력

[前] 샌드박스 블록체인 개발자

[前] 넥슨 자회사 백엔드 개발자

[] 판교에서 고여가는 서버 개발자

 

인터뷰 이력

Curriculum

All

27 lectures ∙ (4hr 51min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

8 reviews

5.0

8 reviews

  • 미래 1인 개발자님의 프로필 이미지
    미래 1인 개발자

    Reviews 6

    Average Rating 5.0

    5

    96% enrolled

    토스에서 서버 개발하면서 Hong이랑 최근에 MySQL 강의를 만들어 본 개발자 입니다. 마성의 남자 Hong이 또 카카오 친구를 꼬드겨서 워크플로우 강의를 만들었군요!! 제가 아는 workflow는 Airflow밖에 없었는데, 오픈소스를 활용하여 클라이언트 레벨에서도 구현 가능한 내용은 처음 보았습니다. 제 입장에서도 꽤나 유익한 주제이기 떄문에 재미있게 보았습니다. 이 강의도 많은 관심 부탁드리며 다음 강의도 많은 관심 부탁드립니다. Hong관 함께 좋은 주제 만들어 보도록 할게요.

    • Hong
      Instructor

      마성의 남자라니... 그게 무슨소리에요 ㅋㅋㅋㅋ 제자로써 많이 배우겠습니다. 감사합니다.

  • 우왕 개발자다님의 프로필 이미지
    우왕 개발자다

    Reviews 6

    Average Rating 5.0

    5

    93% enrolled

    Hong과 함께 강의를 제공하는 개발자들 사이에서 유일하게 워크 플로우에 대해서 알고 사용해본 카카오에서 개발하고 있는 서버 개발자입니다~~ 그러다보니 이 강의에 가장 깊게 참여를 하게 되었는데요. 사실 Kafka나 Debezium (CDC)와 같은 아키텍처는 Hong이 이전에도 한번 다루어 보았어요. 거기에 더해서, 워크플로우 까지 도입해서 전반적인 EDA 기반의 아키텍처에서의 안전성까지 포함시키는 주제로 한번 준비를 해보았습니다. 이 강의가 여러분들에게 많은 도움이 되면 좋겠네요 ㅎㅎ 앞으로 Hong가 함께 더 유익하고 좋은 강의 제공해 드릴 수 있도록 노력하겠습니다. 이벤트도 많은 참여 부탁드리고!! 다음 강의도 기대해 주세요!! 좋은 하루 보내세용~

    • Hong
      Instructor

      다음에도 더 유익한 강의 같이 만들어봐요 ㅎㅎ

  • tasd os님의 프로필 이미지
    tasd os

    Reviews 5

    Average Rating 5.0

    5

    85% enrolled

    이번 강의도 너무 유익했습니다. 공유자님 강의를 꽤 많이 접했는데, 항상 볼떄마다 제 스타일에 맞기도 하고 내용도 너무 유익하고 인프런에서는 유니크한 주제로써 강의를 만드신다고 생각합니다. 개인적으로 이전 Kafka, MySQL도 수강하면서 숲을 본다는 느낌을 많이 받았는데, 이 강의에서도 일부 유사한 형태는 있지만 워크플로우라는 생각지도 못한 주제를 또 접할 수 있게 되어서 너무 좋았습니다. 개발 공부하는데에 있어서 정말 많은 부분 배우고 있어서 다음 강의도 너무나도 기대되네요. 참고로... 전 이미 이벤트로 제공해 주시는 강의를 이미 구매한 바가 있어서 아쉽기는 하지만 ㅎㅎ 그래도 너무 좋은 주제로 강의 만들어 주셔서 감사합니다!!!!!

    • Jlos Ho님의 프로필 이미지
      Jlos Ho

      Reviews 7

      Average Rating 5.0

      5

      89% enrolled

      이떄까지 공부하면서 본 주제중에 가장 뜻깊은 강의인거 같네요. 블로그 내용이든 강의 영상이든 정말 많은 주제를 봤다고 생각했는데, 새삼 이런 주제를 보게 되니깐 우물안에서만 계속해서 삽질만 하고 있었던거 같습니다. 그만큼 강의 자체가 너무 견해가 뛰어나고 넓게 볼 수 있는 내용인거 같습니다. 많은 분들이 이런 강의를 만드시고 수강하시면서 우리 개발 문화가 더욱더 성장하면 좋을꺼같습니다. 좋은 강의 너무 감사드립니다.

      • ks ju님의 프로필 이미지
        ks ju

        Reviews 8

        Average Rating 5.0

        5

        93% enrolled

        정말 너무 좋은 주제인거 같습니다. 세삼 처음 들어보는 내용이였고 이건... 실무를 경험하고 있지만, 일반 API만 개발해봤던 저에게 진짜 세상이 넓다는걸 알려주는 너무 유익한 주제였네요.. 너무 좋은 주제로 만들어 주셔서 감사합니다. 장점이라고 한다면, 그냥 아키텍처 자체에서 큰 부분을 배워갈 수 있고, 워크플로우라는 정말 생소한 개념을 이렇게 값싼 가격에 마주할 수 있어서 너무 좋았습니다.

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