강의

N
챌린지

멘토링

로드맵

BEST
Programming

/

Back-end

Slack Clone Coding [Backend with NestJS + TypeORM]

Let's learn NestJS, which is called the Spring of Node.js, and experience the convenience of Dependency Injection. Let's learn everything from API development, comparison with Express, deployment, and testing.

(4.6) 100 reviews

1,912 learners

  • zerocho
NestJS
TypeORM
Express
Node.js

Reviews from Early Learners

What you will learn!

  • NestJS

  • Comparison with Express

  • TypeORM

  • Unit testing, e2e testing

  • API Design

I created a chat app with my own hands, and even developed a server!
Meet NestJS, the hottest thing these days.

In Express
With NestJS !

I was originally using Express as a server framework and Sequelize as a DB at work. But I saw a lot of mention of NestJS in the community, so I tried it out and... My eyes are wide open👀!
After that , we converted all company services to NestJS, and also converted Sequelize to TypeORM.

Spring of the node system,
Hot NestJS 🔥

NestJS, called the Spring of Node.js! It is said that even developers who left Node to do Spring are coming back because of NestJS. How is NestJS different from Express, which has been widely used so far, and how powerful is it? In this lecture, we will introduce the functions of NestJS. We will convert the web server built with Express to NestJS, and directly create the backend part of a web app similar to Slack.

Well then, let’s learn first-hand why NestJS is so hot.

I recommend this to these people!

For those who want to get started with Node.js server development with NestJS

For those who feel that Express features are lacking and are looking for alternatives

Anyone who wants to implement the backend part through clone coding

Zero second slack clone coding ,
Backend concerns completely resolved!

  • We're going to build the backend part of a web app similar to Slack.
  • We will introduce the features of NestJS and try converting Express server to NestJS.
  • You will learn how to move away from Express and understand the benefits of NestJS, and be able to build a NestJS server.

Immediately applicable in practice!

  • I will share tips I learned while using NestJS for a year at my company, such as how to read the official NestJS documentation, how to draw ERD, and how to create API documentation.
  • As a bonus, it even works OK with websockets and testing!

Please check before taking the class!

  • This lecture is the backend part of the [Slack Clone Coding] lecture. However, you can take this lecture without taking the previous frontend part. If you are curious about how to create a frontend, Please check the previous lecture .

Learn these skills.

Nest.js

NestJS

TypeORM

TypeORM

socketio

Socket.io

노드js

Node.js

Let's make it ourselves!

Slack Clone Coding - Backend Part Development
Request validation and response standardization
Automatically generate Swagger documentation via NestJS
ERD design and TypeORM usage

The actual deployed service
Are you curious?

https://sleact.nodebird.com (shortcut)

You can create that page through the lecture :)

#1
The source code
 Provides.

https://github.com/zerocho/sleact (shortcut)

As well as the NestJS + TypeORM source code,
We also provide the corresponding Express + Sequelize source code for the code .

#2
Quickly answer the question
I will answer you.

The great thing about my course is the Q&A. If you have a question, I will answer it within a day.
Please study actively by freely asking questions about course-related content.
It will help you understand the content better!

Introducing the knowledge sharer .

Zerocho Blog and
Running a YouTube channel

Web Development Bestseller
author

Today's Pickup Co., Ltd.
CTO

Frequently Asked Questions 💬

Q. Slack Clone Coding - [Real-time Chat with React!] Do I need to take the course as well? I'm not interested in the front end.

If you are only interested in server development, you only need to take this course. However, when coding the backend, you need a frontend to send a request to the backend, right? That's why I've completed the frontend code. You just need to run the frontend code. Use the frontend screen to send a request to the backend.

Q. Do I need to know Express? I want to skip Express and just use NestJS.

The lectures often introduce Express or compare its differences with Express. You should be able to read some Express code to take the course smoothly. Since NestJS uses Express internally, it is recommended to understand Express.

Please note before taking the class!

  • Nest.js uses version 8. It would be smoother to take the course using version 7 or 8.
  • The actual deployed service can be found at sleact.nodebird.com .
  • The lecture notes are here .
  • Frequently asked questions will be compiled into a FAQ and posted on the Inflearn blog.
  • If there is a problem with the video or content, please contact us and we will re-edit and upload it.
  • If there is something you are curious about implementing that is not in the lecture, and many people ask questions, I will create a bonus video.

Check out the related lectures.

[Renewal] Node.js Textbook -
From basics to project practice

Node, what if you feel like you lack the basics?
Want to learn Express?

Slack Clone Coding
[Real-time chat with React!]

Slack Clone Coding,
If you want to learn up to the front?

[Renewal] With React
Creating NodeBird SNS

Curious about other clone lectures?
22 hour Twitter clone!

Recommended for
these people

Who is this course right for?

  • Anyone who wants to get started with Node.js server programming using NestJS

  • If you are trying to switch from Express to NestJS

  • If you are familiar with Spring and are looking for something similar in Node

Need to know before starting?

  • Node.js Basics

  • Experience with Express, Passport, Sequelize

  • Typescript Basics

Hello
This is

65,692

Learners

1,619

Reviews

9,708

Answers

4.8

Rating

22

Courses

제 강의의 장점은 Q&A입니다(인프런 답변왕 2회 수상). 24시간 이내에 최대한 답변드립니다! 같이 고민한다는 느낌으로 답변 드릴게요!

One of the key strengths of my courses is the Q&A support. (Winner of the Inflearn Q&A King award twice) I respond to your questions within 24 hours, doing my best to help you out! You’ll feel like we’re solving the problems together.

👉ZeroCho Lectures
제로초 강의 전체 로드맵. A complete roadmap of all my courses is available here.

– Node.js교과서, 코딩자율학습 제로초의 자바스크립트, Let's Get IT 자바스크립트, 타입스크립트 교과서 저자 
– ZeroCho.com 운영자
– 현) 유튜브에서 ZeroCho TV로 개발 관련 방송중 
– 현) 스모어톡 CTO 
– 전) 오늘의픽업 CTO(카카오모빌리티에 엑싯 후 카카오모빌리티 최연소 개발파트장)

  • Author of Node.js Textbook, Self-Guided JavaScript by ZeroCho, Let's Get IT JavaScript, and TypeScript Textbook

  • Operator of ZeroCho.com

  • Currently running a YouTube channel ZeroCho TV, covering development topics

  • CTO at SmoreTalk

  • Former CTO at Today Pickup (acquired by Kakao Mobility, where I became the youngest lead developer)

Curriculum

All

39 lectures ∙ (9hr 40min)

Published: 
Last updated: 

Reviews

All

100 reviews

4.6

100 reviews

  • dyonglove님의 프로필 이미지
    dyonglove

    Reviews 25

    ∙

    Average Rating 4.2

    3

    100% enrolled

    The technology stack that I want to learn is mainly covered by Zerocho, so I signed up for almost all of the lectures, but the lecture-style on YouTube doesn't seem to suit me. Should I say it's chaotic and distracting? It feels more like he's commentating while playing Starcraft than teaching in a straightforward manner?? He just mentions things and passes them over, and I keep thinking that I'll look them up later... Before the lecture starts, he says, "What will I explain today?", and then he organizes them and tells me. If you can't follow along, this is the final version of today's lecture. I think this kind of lecture suits me. The content is not bad. Honestly, I hesitated to leave a review even after attending so many lectures because I felt burdened by leaving a bad review, but since I paid for the lecture, I'll leave my honest opinion. I'll watch the old lectures and leave as many reviews as possible. Lastly, he answers questions very well. He has recorded many lectures, and some of them are quite old, but I think it's really great that he maintains them while answering questions! I hope you'll continue to give us great lectures in the future.

    • musaepal님의 프로필 이미지
      musaepal

      Reviews 8

      ∙

      Average Rating 4.3

      3

      90% enrolled

      There is a part in the middle that shows migration from express to nestjs, but it is not easy to follow this part for someone who has not taken the existing lecture. There is also the DB table creation and a webpack error that suddenly appears... I think you should make a lecture for people who have not taken the express lecture...

      • zerocho
        Instructor

        All the solutions are written in the notice. You could have left even a simple question.

    • tjdwoek623292님의 프로필 이미지
      tjdwoek623292

      Reviews 1

      ∙

      Average Rating 4.0

      4

      97% enrolled

      It was good, but I haven't seen the previous lectures, and although it's unrelated to the previous lectures, I think there are too many examples from those lectures, so I think that part is a little difficult.

      • groundp님의 프로필 이미지
        groundp

        Reviews 5

        ∙

        Average Rating 4.6

        3

        62% enrolled

        I liked the part where you explained the differences with Express. I was impressed by how you had a lot to say and how you tried to teach as much as possible. However, I wish you were a little more friendly. I saw the answer to another person's question, and it seems like the person asking the question has to be careful. I think it's a bit strange to tell people to think about their questions and not just follow along without thinking. The instructor is good, so that may be the case, but I hope you don't forget that most of the people watching this lecture are beginners in NestJS. I'm enjoying the lecture.

        • zerocho
          Instructor

          Thank you for your opinion. However, my opinion has not changed. I think there are two types of students. One type is those who really want to study, and the other type is those who just follow along and get results. I want only those who really want to study to take my class, even if it means making less money. That is why I do not accept questions like, “No, you can’t follow along.” I do not want to hear people say that my lectures were not helpful.

      • wonn234635님의 프로필 이미지
        wonn234635

        Reviews 2

        ∙

        Average Rating 4.0

        3

        95% enrolled

        It seems that many people are still not proficient in nestjs. When showing test code, it seems that they do not know well when to use useValue, useClass, and useFactory, as stated in the official documentation. Also, the lecture video is not well organized. It was edited from a live broadcast and produced as a lecture video, but the lecture video itself is not organized and sometimes contains incorrect explanations. Of course, the incorrect parts are explained in subtitles or supplementary videos, but I think that is not good in itself. It felt like they were not proficient enough in the framework to film a paid lecture on nestjs.

        • zerocho
          Instructor

          I'm sorry. There were a lot of shortcomings at that time, so I plan to re-shoot based on the manuscript I'm writing for this book. I'll do it in a format where I analyze the internal implementation.

      $34.10

      zerocho's other courses

      Check out other courses by the instructor!

      React Native with Expo: Learning Properly from ZeroCho강의 썸네일

      React Native with Expo: Learning Properly from ZeroCho

      zerocho

      Web developers (especially React developers) can now truly easily launch apps. With Expo, you can launch both Android and iOS apps even faster. Let's become a developer who can quickly launch apps with Expo.

      초급

      초급

      React, React Native, Hybrid App

      React Native with Expo: Learning Properly from ZeroCho강의 썸네일

      React Native with Expo: Learning Properly from ZeroCho

      zerocho

      TS/JS Design Patterns with Canvas: Learn Properly from Zerocho강의 썸네일

      TS/JS Design Patterns with Canvas: Learn Properly from Zerocho

      zerocho

      Learn about the uses, pros and cons of various design patterns while creating a drawing board with TypeScript/JavaScript. Learning the canvas API is a bonus!

      중급이상

      중급이상

      Design Pattern, oop, TypeScript

      TS/JS Design Patterns with Canvas: Learn Properly from Zerocho강의 썸네일

      TS/JS Design Patterns with Canvas: Learn Properly from Zerocho

      zerocho

      [Revised 3rd Edition] Node.js Textbook - From Basics to Project Practice강의 썸네일

      [Revised 3rd Edition] Node.js Textbook - From Basics to Project Practice

      zerocho

      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.

      초급

      초급

      Node.js, Express, MySQL

      [Revised 3rd Edition] Node.js Textbook - From Basics to Project Practice강의 썸네일

      [Revised 3rd Edition] Node.js Textbook - From Basics to Project Practice

      zerocho

      Next + Create a SNS service with React Query강의 썸네일

      Next + Create a SNS service with React Query

      zerocho

      We will create an SNS service similar to Twitter (X.com) using the React19 & Next15 & ReactQuery5 & Next Auth5 & MSW2 & socket.io4 & zustand stack. Finally, we will add SSR for search engine optimization!

      중급이상

      중급이상

      Next.js, React, react-query

      Next + Create a SNS service with React Query강의 썸네일

      Next + Create a SNS service with React Query

      zerocho

      Catching up with non-majors - Networks, HTTP강의 썸네일

      Catching up with non-majors - Networks, HTTP

      zerocho

      If you are a developer who deals with HTTP or want to become a developer but did not major in computer science and are weak in networking, gain lifelong knowledge with this one course!

      입문

      입문

      Network, tcpip, websockets

      Catching up with non-majors - Networks, HTTP강의 썸네일

      Catching up with non-majors - Networks, HTTP

      zerocho

      [Renewal] TypeScript All-in-One: Part 2. Practical Analysis강의 썸네일

      [Renewal] TypeScript All-in-One: Part 2. Practical Analysis

      zerocho

      Now that you've learned the basic grammar of TypeScript, let's learn how to analyze complex types from popular libraries.

      중급이상

      중급이상

      TypeScript

      [Renewal] TypeScript All-in-One: Part 2. Practical Analysis강의 썸네일

      [Renewal] TypeScript All-in-One: Part 2. Practical Analysis

      zerocho

      Test with Jest: Learn Properly from Zerocho강의 썸네일

      Test with Jest: Learn Properly from Zerocho

      zerocho

      In this lecture, we will show you when testing is necessary and the advantages of testing using the Jest framework. We will apply unit testing and integration testing to React, Express, etc.

      초급

      초급

      Software Test, Jest, react-testing-library

      Test with Jest: Learn Properly from Zerocho강의 썸네일

      Test with Jest: Learn Properly from Zerocho

      zerocho

      [Renewal] TypeScript All-in-One: Part 1. Basic Grammar강의 썸네일

      [Renewal] TypeScript All-in-One: Part 1. Basic Grammar

      zerocho

      Learn the basic syntax of TypeScript, how to analyze types written by others, and how to write your own types.

      초급

      초급

      TypeScript

      [Renewal] TypeScript All-in-One: Part 1. Basic Grammar강의 썸네일

      [Renewal] TypeScript All-in-One: Part 1. Basic Grammar

      zerocho

      [Renewal] Introduction to JavaScript in Zero Seconds through Coding Self-Study강의 썸네일

      [Renewal] Introduction to JavaScript in Zero Seconds through Coding Self-Study

      zerocho

      In this lecture, we will practice developing programming thinking skills using JavaScript. Let's start with the web game, the multiplication table, and then create a word game, number baseball, a reaction speed test, tic-tac-toe, a lottery machine, rock-paper-scissors, a card matching game, a text RPG, a minesweeper, a 2048 game, and a mole catching game.

      초급

      초급

      JavaScript

      [Renewal] Introduction to JavaScript in Zero Seconds through Coding Self-Study강의 썸네일

      [Renewal] Introduction to JavaScript in Zero Seconds through Coding Self-Study

      zerocho

      Learning React while making web games강의 썸네일

      Learning React while making web games

      zerocho

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

      초급

      초급

      React

      Learning React while making web games강의 썸네일

      Learning React while making web games

      zerocho

      Non-majors catching up with majors - Data Structures (with JavaScript)강의 썸네일

      Non-majors catching up with majors - Data Structures (with JavaScript)

      zerocho

      Data structures are essential subjects for studying algorithms! Let's learn various data structures using JavaScript!

      초급

      초급

      JavaScript, Algorithm, Coding Test

      Non-majors catching up with majors - Data Structures (with JavaScript)강의 썸네일

      Non-majors catching up with majors - Data Structures (with JavaScript)

      zerocho

      Non-majors catching up with majors - Database, SQL강의 썸네일

      Non-majors catching up with majors - Database, SQL

      zerocho

      If you are already a developer or want to become a developer but did not major in computer science and are weak in databases, gain lifelong knowledge with this one course!

      입문

      입문

      DBMS/RDBMS, SQL, MySQL

      Non-majors catching up with majors - Database, SQL강의 썸네일

      Non-majors catching up with majors - Database, SQL

      zerocho

      Delivery App Clone Coding [with React Native]강의 썸네일

      Delivery App Clone Coding [with React Native]

      zerocho

      Let's create a delivery app for riders with React Native. This is a lecture by a developer who has created more than 5 apps with React Native over the past 6 years and sold them to Kakao Mobility.

      중급이상

      중급이상

      React Native

      Delivery App Clone Coding [with React Native]강의 썸네일

      Delivery App Clone Coding [with React Native]

      zerocho

      Slack Clone Coding [Real-time Chat with React]강의 썸네일

      Slack Clone Coding [Real-time Chat with React]

      zerocho

      Let's start serious React web development by creating it following the Slack service! From sign-up, login, room creation, to real-time chat!

      중급이상

      중급이상

      Clone Coding, React, TypeScript

      Slack Clone Coding [Real-time Chat with React]강의 썸네일

      Slack Clone Coding [Real-time Chat with React]

      zerocho

      [Renewal] Creating NodeBird SNS with React강의 썸네일

      [Renewal] Creating NodeBird SNS with React

      zerocho

      Let's create a Twitter-like SNS service with React & Next & Redux & Redux Saga & Express stack. Finally, we will deploy it to AWS after SEO.

      중급이상

      중급이상

      React, Redux, Node.js

      [Renewal] Creating NodeBird SNS with React강의 썸네일

      [Renewal] Creating NodeBird SNS with React

      zerocho

      Applying TypeScript to Node.js (feat. NodeBird)강의 썸네일

      Applying TypeScript to Node.js (feat. NodeBird)

      zerocho

      Let's apply TypeScript to Node.js, add typings to existing npm packages, or create your own TypeScript library.

      중급이상

      중급이상

      TypeScript, Node.js, Web Application

      Applying TypeScript to Node.js (feat. NodeBird)강의 썸네일

      Applying TypeScript to Node.js (feat. NodeBird)

      zerocho

      Applying TypeScript to React while learning while making web games강의 썸네일

      Applying TypeScript to React while learning while making web games

      zerocho

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

      중급이상

      중급이상

      React, TypeScript

      Applying TypeScript to React while learning while making web games강의 썸네일

      Applying TypeScript to React while learning while making web games

      zerocho

      Redux vs MobX (Learn Both!)강의 썸네일

      Redux vs MobX (Learn Both!)

      zerocho

      Are you having trouble deciding between Redux and MobX? Let's learn both first and then decide!

      초급

      초급

      Redux, MobX

      Redux vs MobX (Learn Both!)강의 썸네일

      Redux vs MobX (Learn Both!)

      zerocho

      Learning Vue while making web games강의 썸네일

      Learning Vue while making web games

      zerocho

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

      초급

      초급

      Vue.js, Webpack, Vuex

      Learning Vue while making web games강의 썸네일

      Learning Vue while making web games

      zerocho

      Creating Nodebird SNS with Vue강의 썸네일

      Creating Nodebird SNS with Vue

      zerocho

      Create a SNS service using Vue and Nuxt frameworks. Learn the full stack knowledge required for the service.

      중급이상

      중급이상

      Vue.js, Node.js, AWS

      Creating Nodebird SNS with Vue강의 썸네일

      Creating Nodebird SNS with Vue

      zerocho

      Similar courses

      Explore other courses in the same field!

      NodeJS backend development right now [Saju Manse Calendar]강의 썸네일

      NodeJS backend development right now [Saju Manse Calendar]

      kookh09875453

      In this course, you will learn how to quickly develop a backend API through a Sajoo Manse Calendar service practice. It covers ExpressJS, Sequelize (ORM), MySQL, JWT, DB and API design, and HTTP communication.

      초급

      초급

      Node.js, JWT

      NodeJS backend development right now [Saju Manse Calendar]강의 썸네일

      NodeJS backend development right now [Saju Manse Calendar]

      kookh09875453

      Inflearn After-Work Meetup #01 Node.js강의 썸네일

      Inflearn After-Work Meetup #01 Node.js

      inflearn

      초급

      초급

      Node.js, NestJS

      Inflearn After-Work Meetup #01 Node.js강의 썸네일

      Inflearn After-Work Meetup #01 Node.js

      inflearn

      The Easiest Node.js (Global ver.)강의 썸네일

      The Easiest Node.js (Global ver.)

      yalco

      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.

      초급

      초급

      Node.js

      The Easiest Node.js (Global ver.)강의 썸네일

      The Easiest Node.js (Global ver.)

      yalco

      Creating a League of Legends Match History Search Site with React.js + Node.js강의 썸네일

      Creating a League of Legends Match History Search Site with React.js + Node.js

      neneee

      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.

      입문

      입문

      React, Node.js, api

      Creating a League of Legends Match History Search Site with React.js + Node.js강의 썸네일

      Creating a League of Legends Match History Search Site with React.js + Node.js

      neneee

      Spring Boot + React.js Login (+Social) Service Understanding강의 썸네일

      Spring Boot + React.js Login (+Social) Service Understanding

      neneee

      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.

      초급

      초급

      React, Node.js, REST API

      Spring Boot + React.js Login (+Social) Service Understanding강의 썸네일

      Spring Boot + React.js Login (+Social) Service Understanding

      neneee

      Node and React series that you can learn by following - Creating a Reddit site (NextJS) (Pages Router)강의 썸네일

      Node and React series that you can learn by following - Creating a Reddit site (NextJS) (Pages Router)

      John Ahn

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

      초급

      초급

      Clone Coding, Node.js, React

      Node and React series that you can learn by following - Creating a Reddit site (NextJS) (Pages Router)강의 썸네일

      Node and React series that you can learn by following - Creating a Reddit site (NextJS) (Pages Router)

      John Ahn

      All About Redis (feat. Node.js)강의 썸네일

      All About Redis (feat. Node.js)

      yongsoocho

      Ladies A to Z for a solid start to Ladies! Everything about Ladies that is easy and fun to understand, even for high school students.

      입문

      입문

      Redis, Node.js

      All About Redis (feat. Node.js)강의 썸네일

      All About Redis (feat. Node.js)

      yongsoocho

      Working with Databases and Building Web Applications with Node.js강의 썸네일

      Working with Databases and Building Web Applications with Node.js

      Egoing Lee

      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.

      초급

      초급

      Node.js

      Working with Databases and Building Web Applications with Node.js강의 썸네일

      Working with Databases and Building Web Applications with Node.js

      Egoing Lee