Slack Clone Coding [Backend with NestJS + TypeORM]

With the arrival of the AI era, the skills required of developers are becoming increasingly complex. You might have thought, "I just need to be good at frontend," but when you try to create your own service or integrate AI features, you eventually hit a massive wall called the backend. However, as you try to start backend development, are you overwhelmed by how much there is to learn—from database design and authentication (Auth) to storage management and complex infrastructure setup? Now, you can lay down that heavy burden. In this course, we use Supabase, which solves all these backend functions at once. We will guide you through the fastest shortcut to becoming a full-stack developer who can "instantly" complete a backend without complex server knowledge and bring ideas to life immediately.

You will learn about what a node is, the latest JavaScript grammar, the node API, npm, the module system, databases, testing, and more. You will create a project using five practical examples. You will also deploy a service to the cloud and convert a node project to TypeScript.

In this course, we will practice developing programming thinking skills using JavaScript. Starting with a multiplication table web game, we will build various projects together, including Word Chain, Number Baseball, Response Rate Test, Tic-Tac-Toe, Lotto Generator, Rock-Paper-Scissors, Card Matching Game, Text RPG, Minesweeper, 2048, and Whack-a-Mole.

Let's use React and TypeScript together by adding TypeScript to a web game made with React and React Router, Redux, and MobX.

Learn Vue.js and Vuex and Vue Router, which are used with Vue, by creating 8 simple web games.

Learn React through web games. Get familiar with Classes and Hooks, and learn additional things like Context API, React Router, Webpack, and Babel.

👩🏻‍💻This is a lecture on learning expressjs in one day. You will definitely take the results with you, and the explanation will proceed with a logic-oriented visual sequence diagram rather than text.

Let's systematically design the backend using the domain-driven development (DDD) method and apply it to microservices!

A smooth-flowing guide to Express.js, from basics to real-world application! A backend journey to truly master everything from basic server concepts to completing a CRUD project through hands-on implementation.

Build a solid foundation for your first start with Redis A to Z! Everything about Redis, explained so easily and fun that even a high school student can understand it perfectly.

In this course, you will be able to create a Reddit website from scratch, step by step.

This course covers the essential principles and practical techniques of Node.js that you must know before diving into real-world front-end or back-end development.

This course is a practical, hands-on course where you will build your own 'League of Legends Match History Search Site' using React.js and Node.js, utilizing the Riot Games API. Students will naturally learn through hands-on practice, following the project step-by-step, covering everything from basic API usage, integration of frontend (React.js) and backend (Node.js, Express.js), to match history data visualization, and implementing op.gg-style UI. Rather than focusing on complex theories, this course is code-centric, allowing you to quickly experience results by 'building it yourself' through hands-on practice.

Understanding Spring Boot + React.js Login (+Social) Service is a course designed to help you deeply understand the authentication flow between frontend and backend, by directly implementing a practical login system that includes JWT-based authentication and social login (Kakao/Google). The frontend is built on React.js, and the backend on Spring Boot, enabling you to learn step by step the practices used in real service environments, such as the Access Token + Refresh Token approach, user state management using HttpOnly Cookie and Redux, Role-based authorization, and social login integration.

This is a free 1-hour introductory lecture to get you started with just the OpenAI API. You will quickly master core concepts including the Responses API, JSON response handling, validation, idempotency, and logs, while learning a practical backend workflow that allows for immediate testing without the need for external service keys.

The days of feeling relieved by black-box code spat out by AI are over. By piercing through the physical limitations of computers and the inner workings of the Node.js core engine, we provide you with the engineering control to remain unshakable in the face of any traffic surge.

This article introduces the relationship between Nodejs, a server-side JavaScript language, and a database, and explains how to create web applications using Nodejs and a database.