The One Map Every Web Developer Should See

From TCP/IP to HTTP! This lecture is for those who lack basic network theory and want to understand major theories by memorizing them. You can do it!

We will help you memorize and finish the encryption technology responsible for the security of the Internet very easily. You can understand the structure and principles of various technologies such as SSL certificates, PKI technology, digital signatures, and public authentication systems.

This lecture guides those who have learned the basic course of network core theory by memorizing it to understand theories in more depth. It covers more in-depth theories such as NAT technology, the operating principle of Internet routers, load distribution system principles, and VPN technology principles. The goal of this lecture is also to finish it by memorizing it! You can do it!

This is a lecture for all non-major beginners who want to become computer science majors by memorizing broadly and shallowly. You can quickly learn what you can learn in essential computer science major subjects such as computer architecture and operating systems. Above all, you can finish it by memorizing it!

This is a C language programming course for those who want to become professional developers rather than hobbyists. I recommend it to those who want to learn by writing and reading and go down a sweet path!

Secrets to Escaping Beginner Status Revealed! We'll properly teach you about Java multithreaded programming and synchronization techniques!

Starting with java.io, you can learn how to develop high-performance input/output systems based on NIO and NIO.2. Most importantly, the moment you master file I/O, we'll enable you to master high-performance server development as a bonus!

This course is for those who want to develop packet analysis programs like Wireshark and various network solutions using the Npcap library.

It covers just two things properly: object-oriented programming and the JVM! Plus, it throws in linked-list-based linear data structures.

We enable you to fundamentally understand and resolve issues where Hangeul appears broken on web pages or in databases, or files contain unknown characters.

This is a course provided to those who have completed the course 'Learn broadly and superficially to become a computer science major' so that they can study the operating system in more depth.

I'll show you how Java backend developers using IntelliJ can maximize productivity with Claude Code. I'll especially help those using Windows environments completely solve vibe coding environment issues.

This lecture comprehensively organizes the content that would be good for those who want to get a job as a new Spring Java backend developer, especially those who are about to have an interview.

If you have studied the C language thoroughly and studied linear data structures, it is now time to experience the world of object-oriented programming with C++!

In this lecture, you will learn application-level protocol design techniques and how to develop a high-performance server based on IOCP!

Based on an understanding of Reflection and Annotations, it helps you clearly understand how the Spring framework operates!

For those aspiring to be Java-based Spring backend developers, to easily secure a job, we learn Java properly! Rigorously!

A must-take course for anyone thinking of becoming a Windows programmer! Have you studied C/C+, data structures, and operating system theory? If so, studying system programming is the answer now. Now it's time for practice!

This course covers topics for those who have completed basic studies of the C language, such as compiler theory, stack frame structure, multi-threading, virtual memory structure, security vulnerabilities, and secure coding. It is highly recommended for those who wish to become experts in the C/C++ field, or those who majored in CS or have similar skills!

You will acquire the skills to develop a security system by learning how to intercept the process in which a specific application calls various API functions. ※Absolutely no abuse!!!

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!

Page 19, Total 22 different mobile layouts While creating various mobile layouts, you can improve your mobile web creation skills, which are the most competitive in the publisher industry and publisher practice. You can learn almost all the production methods and know-how for creating mobile web as a publisher. In the mobile web publishing class, we will explain in detail the detailed writing method of HTML wireframes, which is the strongest part of the class. Through the lecture, your HTML wireframe creation skills will greatly improve. In particular, you can learn enough about the CSS nesting method. You will acquire sufficient intermediate to advanced CSS practical skills centered on Flex layout.

This revised course was created using the latest version of Spring Security 6.x. From beginner to intermediate to advanced levels, you will learn the basic concepts of Spring Security, as well as how to use the API and its internal architecture. Based on this, you will complete a practical project and acquire core technologies related to Spring Security's authentication and authorization.

Now you can enjoy the easy and fun coding lectures of Young Cody Kim, a current star lecturer who has devoted himself to coding education for over 15 years, targeting elementary school students, high school students in IT software departments, college students in computer science departments, and job seekers who are not majoring in the field, not only offline but also online. With Young Cody Kim, who has produced over 500 front-end, back-end, full-stack, and web developers, your dream of becoming a developer will soon come true!

CSS Welcome to the CSS Basics course based on over 20 years of practical experience! This course is designed for those of you who are taking the first step toward becoming a web publisher and front-end developer.

This lecture is an edited version of a YouTube live video that I made with Toby to celebrate the release of his <Toby's Spring> lecture.

Libraries are optional, but web standard technologies are essential. Adapt to the new standard for web animation, Web Animation API, faster than others and apply it to your work right away!

For over 15 years, Young Codi Kim, a star coding instructor, has been dedicated to coding education for elementary school students, high school students in IT software departments, university students in computer science, and job seekers without a major in the field. Now, you can experience Kim's easy and fun coding lectures not only offline but also online. With Young Codi Kim, who has trained over 500 front-end, back-end, full-stack, and web developers, your dream of becoming a developer will soon become a reality!

Jeju Coding Base Camp's free lecture is back!! Let's create a 10,000-hour rule service together and distribute it to Github!! :) You don't know anything? That's okay. Everything is prepared in this lecture!

[TPC DB!] A course that allows you to learn database modeling while thinking, learn database modeling step by step, and master everything from database modeling to web programming implementation all at once.

This is the most solid foundation course for beginners who want to learn JavaScript properly. This course will be the starting point for understanding the language called JavaScript, and you can perfectly prepare the basics to become a front-end (Vue, React, Angular) developer and server (Node.js) developer.

Coding No. 1 YouTuber Jo Coding's practical compression! Easy and fun web full-stack development lecture

A three-in-one class where you can create web games and learn front-end web development skills! This class has been created to teach you how to create games using JavaScript, CSS, and HTML with your own ideas!

We have created this so that anyone can pass the 2023 version of the Web Design Function Exam Criteria. Let's learn the 5 types and pass quickly!

Beyond basics like API design, CRUD implementation, and JWT authentication, all the way to backend architecture design! This is an introductory system design course to help you build 'your own backend architecture' that you can confidently discuss in interviews.

📌 This course starts with a strategic AI Tic-Tac-Toe project and is a curriculum that completes the core concepts of object-oriented programming through practical examples. Through game implementation, you will train logic design and AI strategic thinking, and then directly experience OOP design techniques such as inheritance, composition, delegation, and encapsulation through code. This is recommended for those who want to go beyond syntax and grow into a 'designing developer' through a real project.

In this course, rather than covering the theory directly, you will learn how to use Redis effectively in your code through hands-on practice.

You can learn about the core functions of MySQL and how to effectively use them in your work. You can also gain a new understanding of important parts that you have been using for a long time and have overlooked, and gain in-depth database knowledge.

This lecture covers how to easily implement game backend systems using UGS (Unity Gaming Service). You will practice essential features such as Guest and Username/Password authentication, game data storage, leaderboards, and Remote Config. UGS has built a perfect ecosystem with Unity, preparing a practical course for easy learning without entry barriers, allowing immediate application to your projects.

Have you ever wondered "how" the many Java libraries and frameworks you use provide this functionality? In this course, learn how to manipulate various codes or objects provided by Java and take your Java skills to the next level.