DB_Address

Discover how to build secure RESTful APIs using NestJS, TypeScript, and various technologies. Delve into authentication, data modeling, error handling, testing, and deployment for scalable, real-world applications.

Yan Sun - Building Real-World Restful APIs with NestJS and TypeScript-02.png

address-book-api.tar.gz

region

access_key_id

secret_access_key

output

nestjs-new

nestjs-2.1-module

nestjs-2-install-start

nestjs-typeorm-2

nestjs-base

nestjs-playground

nestjs-install-hmr-start

nestjs-orm-migration

nestjs-typeorm-2-e2e

nestjs-typeorm-docker

nestjs-2.1-test-auto

nestjs-2.1-module-AWSCLI

Testing Example

NestJS is built on top of the popular Express.js library and provides a modular and structured approach to building server-side applications.

You will take a hands-on approach to constructing a practical RESTful API from the ground up. By leveraging NestJS, TypeScript, and other technologies, you will delve into various topics, such as data modeling with TypeORM and MySQL, authentication and authorization mechanisms, request validation, error handling strategies, testing methodologies, deployment practices, and more.

By the end of this course, you will have gained the essential skills, knowledge, and hands-on experience necessary to build a real-world RESTful API. You will have learned how to scale your application using a public cloud, such as AWS, where your application can serve thousands and millions of customers cost-effectively. This comprehensive learning journey equips you to confidently navigate the intricacies of RESTful API development, ensuring you are well-prepared for NestJS development.

Building Secure RESTful APIs with NestJS: A Practical Guide

The code should be grouped by directory and file extensions.

Organize the code by its intention (i.e., put all controllers into one folder and all services into another).

The source code should be organized into different modules, with a main module as the root module.

To start, we can write all the code into the controller to make it easy to read.

Which organizational approach will ensure easy code maintainability?

Which organizational approach will ensure easy code maintainability?

The root module is used to handle HTTP requests and responses, while feature modules contain business logic and data manipulation.

The root module is responsible for importing the shared services and providers, while feature modules encapsulate related functionality.

The root module handles all business logic and database connections, while the feature modules are responsible for defining the application’s routes and HTTP-request handling.

The root module contains shared routes and controllers, while feature modules define the main routing configuration.

What is the purpose of the root module and feature modules in NestJS?

What is the purpose of the root module and feature modules in NestJS?

In a NestJS project, which command is used to manually compile the TypeScript code into JavaScript before running the app in development mode, automatically restart the server upon file changes, and enable debugging?

In a NestJS project, which command is used to manually compile the TypeScript code into JavaScript before running the app in development mode, automatically restart the server upon file changes, and enable debugging?

A controller is a single route responsible for handling incoming HTTP requests.

A controller is a collection of routes that define different HTTP request handlers.

Controllers are used to validate incoming data and define business logic.

Controllers and routes are interchangeable terms that refer to the same concept in NestJS.

Which statement best describes the purpose of a NestJS controller?

Which statement best describes the purpose of a NestJS controller?

`imports`, `controllers`, `services`, `exports`

`import`, `controller`, `provider`, `export`

`imports`, `controllers`, `providers`, `exports`

`import`, `controller`, `service`, `export`

In NestJS, the `@Module` decorator is used to define and configure modules. What are the four properties in the `@Module` decorator?

In NestJS, the <code>@Module</code> decorator is used to define and configure modules. What are the four properties in the <code>@Module</code> decorator?

Express is lightweight and provides better performance than Fastify.

Express’s middleware system is flexible and extensive. Fastify also supports middleware but with a focus on being lightweight and highly performant.

Express has a larger community and more third-party middleware available compared to Fastify.

Both Fastify and Express are written in TypeScript and provide type safety out-of-the-box.

Express is known for its superior performance and scalability compared to Fastify in NestJS applications.

**(Select all that apply.)** Which statements best describe the differences between the Express and Fastify platforms when used as the underlying HTTP framework for NestJS?

(Select all that apply.) Which statements best describe the differences between the Express and Fastify platforms when used as the underlying HTTP framework for NestJS?

Understand NestJS fundamentals

Understand NestJS fundamentals

Test your understanding of NestJS’s fundamental concepts.

Introduction

NestJS Fundamentals

Connecting with REST: Building the Address Book App with NestJS

Understand the Basics of NestJS and RESTful APIs

Validation, Exception Handling, and Logging

Persist Data with TypeORM and MySQL

Serialization and Interceptors

Authentication and Authorization

Persist Data, Authentication, Validation, and Serialization

Testing

Deployment

Testing and Deployment

Conclusion

Appendix

Quiz: NestJS Fundamentals