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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!

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!

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 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 lecture covers how to properly implement a linked list-based linear data structure using C language. You can understand the structure of the DB as well as the linked list at once.

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

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

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.

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++!

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

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.

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!

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!

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!

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

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.

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!

Anyone who is a C/C++ developer can get started. You can quickly learn MFC Windows programming by selecting only the core. We also provide a 1200-page textbook.

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!!!

Learn how to add tests to Spring! Then, learn how to change the Spring design to make testing more natural.

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 will develop a scalable order processing system capable of real-time event streaming using Spring Boot 3.x + Kotlin to build a Kafka cluster, leveraging PostgreSQL CDC with Debezium Connect and Apache Avro schema.

Just listen. The lecturing skill, captivating power, and lecture quality are different.

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!

A practical production class on creating responsive web pages that can implement various layouts for each device using only pure HTML/CSS/JS without using Bootstrap [2024 Latest Edition].

A complete beginner's course for those who are just starting out with web development! Let's build the basics of web development, including HTML, CSS, Javascript, and React!

CSS Grid is a powerful tool that allows you to implement complex layouts simply and intuitively. This lecture is designed to help you easily learn the core concepts of CSS Grid to practical applications step by step. Stop being tied to complicated floats and flexboxes and learn the standard of efficient layout design! Start now!

Now that you know a little about Spring and JPA, what should you study and how to grow in the future? Are you studying design patterns to study design and just memorizing the patterns? I'll help you!

We create a project site to create and distribute a psychological test site using only HTML/JS/CSS.

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 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.

📌 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.

This is a full-stack restaurant map tutorial that allows you to learn everything from front-end, back-end, Kakao Map API usage, and deployment all at once while creating a restaurant map of your favorite YouTuber.

This course allows you to learn the major trends in web development by following the overall web technologies required to complete a website.

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

For those who want to introduce OpenSearch and ElasticSearch to AWS services, we will show you quick results centered on AWS OpenSearch software.

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.

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.

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.