What this book covers
Chapter 1, Overview of NestJS, is an introduction to what NestJS NestJS is and what it is capable of.
Chapter 2, Understanding Scalable Application Architecture Principles and Design Patterns, dives into the principles of scalable application architecture and the essential design patterns and best practices used for building scalable applications in NestJS. This chapter covers the fundamental concepts of scalability, such as load balancing, caching, and horizontal scaling.
Chapter 3, Setting Up Your NestJS Environment and Exploring NestJS – Building a Robust App, is a comprehensive guide to setting up the development environment for NestJS and exploring the framework by building a robust application. It covers the installation of NestJS and NestJS, along with the configuration of essential tools such as npm and TypeScript.
Chapter 4, Advanced Concepts – Modules, Controllers, Providers, Exception Filters, Pipes, Guards, and Decorators, delves deeper into NestJS and its advanced features. You will discover modules, controllers, providers, exception filters, pipes, guards, and decorators – all crucial components for building scalable and efficient NestJS applications.
Chapter 5, Building and Optimizing REST APIs with NestJS, covers the process of building and optimizing REST APIs using NestJS. You will gain an understanding of best practices when designing REST APIs, including versioning, pagination, and error handling.
Chapter 6, Unleashing the Power of GraphQL and the Apollo Federation Architecture in NestJS, explores the powerful world of GraphQL and explains how to build efficient GraphQL APIs using NestJS. This chapter will also cover the Apollo Federation architecture, enabling the creation of scalable and modular GraphQL APIs in a microservices-friendly environment.
Chapter 7, Testing and Debugging REST APIs in NestJS, covers various strategies, techniques, and tools for testing and debugging REST APIs developed in NestJS, providing them with the skills necessary to ensure the robustness of their APIs.
Chapter 8, Testing and Debugging GraphQL APIs in NestJS, covers testing and debugging strategies for GraphQL APIs in NestJS. It covers unit testing, end-to-end (E2E) testing, and common debugging techniques for GraphQL.
Chapter 9, Deep Dive into Microservices: Concepts and Architectural Styles, dives into microservices, introducing key concepts and architectural styles. You will learn about the benefits and challenges of microservices and gain an understanding of key architectural styles such as event-driven, database per service, and API gateway.
Chapter 10, Building Scalable Microservices with NestJS, shows how to use NestJS to build scalable microservices. You will learn how to define and implement microservices, how to communicate between microservices, and how to use the NestJS Microservices package.
Chapter 11, Testing and Debugging Microservices in NestJS, provides insights into testing and debugging microservices built with NestJS. You will learn how to write unit and integration tests for microservices, how to debug microservices, and how to handle common issues in a microservices environment.
Chapter 12, Case Study 1: E-commerce Application, explores a case study of building an e-commerce application using NestJS. It covers architectural considerations, data modeling, implementing REST APIs, handling user authentication, and integrating payment gateways.
Chapter 13, Case Study 2 - Social Networking Platform, presents a case study of building a social networking platform using NestJS. It covers designing the application structure, implementing GraphQL APIs, managing user relationships, integrating real-time features, and handling user-generated content.
Chapter 14, Case Study 3 - Enterprise Resource Planning System, provides a case study of building an Enterprise Resource Planning (ERP) system using NestJS. It covers designing the system architecture, implementing microservices, managing data synchronization, and handling complex business processes.
Chapter 15, Deploying NestJS Applications, explains how to deploy NestJS applications to various environments, including local servers, Docker, and cloud platforms such as AWS, Google Cloud, and Render.
Chapter 16, Embracing DevOps: Continuous Integration and Continuous Deployment for NestJS, discusses Continuous Integration and Continuous Deployment (CI/CD) in the context of NestJS. You will learn about various CI/CD tools, and how to implement a CI/CD pipeline for a NestJS application.
Chapter 17, NestJS Performance Optimization, delves into performance optimization for NestJS applications, discussing techniques for improving speed, efficiency, and reliability.
Chapter 18, NestJS Security Best Practices, deals with security best practices for NestJS applications. It discusses strategies for ensuring data security, handling authentication and authorization, and preventing common security threats.
Appendix, Concluding Remarks and Next Steps, offers a summary of key concepts learned throughout the book and suggests the next steps if you want to continue your journey with NestJS.
To get the most out of this book
Chapter 3 explains how to install all the required software and packages. You will need to have NestJS installed on your computer – any version above 16.0.0 – to get started. All code examples have been tested using NestJS 10 on macOS. However, they should work on any operating system where NestJS 10 and future version releases are installed.
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Software/hardware covered in the book |
Operating system requirements |
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NestJS 10 |
Windows, macOS, or Linux |
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TypeScript 4.0 and above |
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Client Application (Postman or a Web browser) |
If you are using the digital version of this book, we advise you to type the code yourself or access the code from the book’s GitHub repository (a link is available in the next section). Doing so will help you avoid any potential errors related to the copying and pasting of code.
Download the example code files
You can download the example code files for this book from GitHub at https://github.com/PacktPublishing/Scalable-Application-Development-with-NestJS. If there’s an update to the code, it will be updated in the GitHub repository.
We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!
Conventions used
There are a number of text conventions used throughout this book.
Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Inside your src/ directory, create a new sub-directory named users.”
A block of code is set as follows:
// ... existing imports import { UsersModule } from './users/user.module';
// ... existing code imports: [UsersModule], // Add this line // ... the rest of the code Any command-line input or output is written as follows:
$ nest new user-management-graphql
Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Create a new environment, choose Web Server Environment, and select Docker as the platform“
Tips or important notes
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