JavaScript (Node.js) and Microservices: A Practical Guide

The book "JavaScript (Node.js) and Microservices" is a practical guide for developers who want to master building distributed systems on the Node.js platform. The author, Alexey Petrov, shares his experience of transitioning from a monolithic architecture to a flexible and scalable microservices ecosystem.

What is this book about?

The book covers the full lifecycle of creating a microservices application: from design and development to testing and deployment. You will learn how to break down a monolithic application into independent services, configure their interaction, and ensure fault tolerance. Special attention is paid to practical aspects: containerization with Docker, asynchronous message exchange via RabbitMQ, and building API gateways.

Who is this book for?

• JavaScript developers who want to move from monoliths to microservices
• Node.js programmers looking to deepen their knowledge of distributed systems
• Full-stack developers planning to build scalable web applications
• DevOps engineers interested in automating the deployment of Node.js services

What will you learn?

• Principles of designing microservices architecture on Node.js
• How to use Express.js and Fastify to create lightweight services
• Setting up Docker containers and orchestration with Docker Compose
• Implementing asynchronous message exchange via RabbitMQ
• Building an API gateway for routing requests between services
• Testing methods (unit, integration, e2e) for microservices applications
• Deployment and monitoring of a distributed system in a production environment
• Error handling, logging, and request tracing

Why should you read it?

This book is not overloaded with theory — each section contains working code examples that can be immediately applied to real projects. You will learn to avoid common mistakes when designing microservices and get ready-made templates for a quick start. By the end of the book, you will be able to independently design and deploy a production-ready microservices system on Node.js.

The book is suitable for both beginners and experienced developers who want to systematize their knowledge of microservices and the JavaScript ecosystem tools.