バックエンド開発者による、バックエンド開発者のためのフロントエンド講義 - 基本編

From log recording to collection and utilization, it covers the whole cycle.

This course will provide you with the basic knowledge to perform performance testing and improve the APIs of your own backend applications.

We'll show you a quick and easy way to implement CircuitBreaker to create a fault-tolerant service.

Through this course, you will experience application deployment automation. While deploying a project, you will also learn how to use Jenkins and gain basic knowledge about CI/CD!

This is a practical course covering how to build systems robust against failures. From design fundamentals for service stability, various patterns to prevent failure propagation, asynchronous processing using message queues, to strategies for maintaining distributed data consistency, you will learn the core technologies and concepts required for a stable backend system.

Through this course, you will gain experience deploying front-end and back-end projects. You will also gain basic knowledge about Linux and networks while deploying projects!

This is a follow-up lecture to 'Testing Backend Application Performance', and it will lay the foundation for improving the performance of the backend application you created.

In this lecture, you will learn how to understand various deployment strategies and choose the right deployment method for your situation to maximize service stability. You will also get practical tips on setting up Slack alarms and deploying to an operating environment!

🔥 Build a customized platform for Hanja learning! Leverage Google Gemini AI and Firestore to directly implement your own Hanja vocabulary book, stroke order animation, and even handwriting recognition!

Create a web page that tests your development type! MBIT (My Best IT Personalities), not MBTI! You can learn the overall process of web development by creating your own 'MBIT Test Page'. (Uses Django 3.1 version.)

Learn Springboot + ReactNative RestAPI Board Creation Faster Than Anyone Develop a CRUD server with Springboot and create your own board with ReactNative!

To become a developer who creates websites, there are many skills to learn. Among those many skills, I will explain HTML and CSS, which are the basics of website creation and the first things you should learn. You will learn how to write HTML and CSS, and at the end, you will do a project to create a website similar to the actual Amazon website. And you can create a URL of the project you made and distribute it.

Learn React the Easiest and Fastest Way!

No matter how much you study React, Next.js, or Vue, if the code feels abstract and the structure isn't clearly understood, the root cause might be a lack of understanding of DOM. DOM is the foundation of all frontend frameworks and the entity that connects the structure and behavior of web pages. This lecture goes beyond simple selectors or manipulation methods, teaching step-by-step from the very beginning how HTML transforms into DOM objects and how to select, traverse, and manipulate this structure. It is the Part 1 introductory lecture of 'Complete DOM Mastery'. HTML tags are just structure, and JavaScript is just behavior, but DOM is the core that connects the two. If you clearly understand this connection, you'll be able to precisely grasp the true structure and flow within any framework you use.

This course covers the Critical Rendering Path (CRP) process from start to finish, where the browser receives HTML to create the DOM, combines it with the CSSOM, and renders pixels on the screen. Beyond simple DOM manipulation, you'll learn how CSS and JS impact performance, image and font optimization, Lazy Loading, Intersection Observer, virtual lists, and DevTools practice, gaining practical strategies to noticeably improve real web performance.

This course goes beyond simply using Express.js. You will rebuild its internal engine from start to finish, gaining hands-on experience with the real principles of how a server works. By directly creating each component of Express—such as routing, middleware, request–response objects, static file handling, and template rendering—you will grow as a server developer and truly understand how a framework operates at its core.

This course will teach you JavaScript through theory and practice. This course is for those who are somewhat familiar with JavaScript. Part 2 covers abstraction, encapsulation, inheritance, and polymorphism in JavaScript.

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.

Beyond simply using Express.js, this lecture will have you directly implementing its internal engine from scratch to finish, allowing you to truly internalize the operating principles of a real server. You will directly build all of Express's components, such as routers, middleware, request-response objects, static file handling, and template rendering, from the ground up, providing an experience that fosters growth as a server developer.

[Tailwind CSS Practical Portfolio Publishing] is a process of creating more than 26 different practical examples using Tailwind CSS. As you quickly create a variety of practical examples, we will explain the essential theories. This lecture was created with a focus on Tailwind CSS styling created by developers and publishers.

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!

The ES6+ Understanding Course provides an in-depth introduction to the ES6 and subsequent standard ECMAScript specifications for JavaScript, with a theoretical foundation, and explains the differences from ES5, as well as the concepts and operating principles.

💡 Even non-developers can go from startup MVP to monetized service in just 10 hours with AI! 💰 Development that used to cost tens of millions in outsourcing fees now completely solved for 120,000 won 🎯 Complete 5 real business projects including business card recognition, sentiment analysis, and location analysis 🔥 If you're a planner, marketer, or aspiring entrepreneur, implement ideas without developers ⚡ Start now and acquire lifelong development independence skills!

Let's quickly create a simple blog that runs for free 24 hours using Google Spreadsheets + Google apps script + Google drive + Bootstrap!

This course is a development manual that comprehensively guides you through the process of developing a Spring Boot-based web bulletin board using various AI tools such as Claude, Gemini, and OpenAI Codex. While the initial environment setup methods differ for each AI tool, the core processes for developing actual bulletin board functionality (backend, frontend, file upload) use the same prompts.

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!

It covers thinking. You can logically organize the core and fundamentals of JavaScript. You can organize your own JavaScript experience and thoughts. You can establish the logic of JavaScript technology. You can broaden your perspective on the entire JavaScript. You can prepare for JavaScript technical interview questions.

It is aimed at beginners of html/css, and it builds a solid foundation, and of course, you can learn practical responsive layout creation.