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.

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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

Authentication and authorization are interchangeable terms. Both refer to verifying a user's identity.

Authentication determines user roles, while authorization verifies user credentials.

Authentication involves obtaining user consent, while authorization involves encrypting sensitive data.

Authentication verifies a user's identity, while authorization determines what actions or resources a user can access.

What is the difference between authentication and authorization?

What is the difference between authentication and authorization?

To enforce access control rules based on roles and permissions

To store user authentication data securely

What is the primary purpose of a guard in a NestJS application's authentication system?

What is the primary purpose of a guard in a NestJS application’s authentication system?

```
@UseGuards(AuthGuard)
@Module({
  imports: [...],
  controllers: [ControllerA, ControllerB],
})
export class UserModule {}
```

```
const app = await NestFactory.create(AppModule);
app.useGlobalGuards(new AuthGuard());
await app.listen(3000);
```

```
@Controller('user')
export class UserController {
  @UseGuards(AuthGuard)
  @Get('id')
  getUserById() {
    // Route logic here
  }

  @Get()
  getAll() {
    // Route logic here
  }
}
```

```
@Controller('user')
@UseGuards(AuthGuard)
export class UserController {
  @Get('id')
  getUserById() {
    // Route logic here
  }

  @Get()
  getAll() {
    // Route logic here
  }
}
```

Which option applies `AuthGuard` on all the routes for users only?

Which option applies <code>AuthGuard</code> on all the routes for users only?

The local strategy is used for token-based authentication. The JWT strategy is suitable for session-based authentication.

The local strategy is ideal for stateful authentication. The JWT strategy stores user data on the server.

The local strategy involves validating a user with a username and password directly. The JWT strategy is stateless.

The local strategy is for token-based authentication. The JWT strategy validates users by comparing encrypted passwords.

In NestJS, we can use different strategies for Passport authentication. Which statement correctly describes both the local strategy and the JWT strategy?

In NestJS, we can use different strategies for Passport authentication. Which statement correctly describes both the local strategy and the JWT strategy?

The three parts are the header, payload, and signature, and all three parts are Base64-encoded.

The three parts are the signature, body, and key, and they are commonly URL-encoded.

The three parts are the token, payload, and cipher, and they are JSON-encoded.

The three parts are the hash, data, and signature, and they are commonly Hex-encoded.

In a JWT, what three parts make up its structure, and what type of encoding is commonly used for these parts?

In a JWT, what three parts make up its structure, and what type of encoding is commonly used for these parts?

```
JwtModule.register({
  secretOrKey: 'mySecretKey',
  expiresIn: '1h',
})
```

```
JwtModule.register({
  secret: 'mySecretKey',
  signOptions: { expiresIn: 3600 },
})
```

```
JwtModule.register({
  privateKey: 'mySecretKey',
  signOptions: { expiresIn: 3600 },
})
```

```
JwtModule.register({
  key: 'mySecretKey',
  tokens: { expiresIn: 60 * 60 },
})
```

In a NestJS application using JWT authentication, we need to configure the JWT strategy. Which option setts the JWT secret key and specifyies the expiration time to be 1 hour?

In a NestJS application using JWT authentication, we need to configure the JWT strategy. Which option setts the JWT secret key and specifyies the expiration time to be 1 hour?

Test your knowledge of authentication and authorization.

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: Authentication and Authorization