Microservices with ASP.NET Core 10 for Beginners: A Practical Step-by-Step Guide to Building Distributed Web APIs with Docker, RabbitMQ, PostgreSQL, Redis, API Gateway, and Observability

Microservices can feel complicated—but learning them does not have to be.

If you have ever looked at words like Docker, RabbitMQ, PostgreSQL, Redis, API Gateway, or observability and felt overwhelmed, this book was written for you. Microservices with ASP.NET Core 10 for Beginners takes a friendly, step-by-step approach to help you understand modern backend development without confusion, pressure, or heavy theory.

You do not need to be an experienced software architect to begin. This practical guide gently introduces you to microservices, ASP.NET Core 10 Web APIs, distributed systems, and the real tools developers use to build scalable backend applications. Every chapter builds your confidence one small win at a time.

Instead of throwing you into complex code, this book explains what each part does, why it matters, and how it fits into a working project. You will create services, connect databases, run containers, use messaging, add caching, route requests through an API Gateway, secure endpoints, and observe your system as it runs.

Mistakes are part of the journey. A container may fail. A database connection may not work at first. A request may return an unexpected error. This book treats those moments as learning opportunities, helping you troubleshoot calmly and keep moving forward.

Key Features

• Beginner-friendly explanations of microservices and ASP.NET Core 10

• Practical project-based learning using distributed Web APIs

• Step-by-step setup with .NET 10, Docker, and development tools

• Hands-on use of PostgreSQL, EF Core, RabbitMQ, Redis, and API Gateway

• Clear guidance on JWT security, structured logging, health checks, and observability

• Troubleshooting support for common Docker, database, messaging, and service errors

• Encouraging teaching style that celebrates progress and builds confidence

What You Will Learn

• What microservices are and when they should be used

• How microservices differ from monolithic applications

• How to build ASP.NET Core 10 Web API services

• How to structure Catalog, Order, Notification, and Gateway services

• How to connect services to PostgreSQL using EF Core

• How to use RabbitMQ for asynchronous messaging

• How to add Redis caching for faster reads

• How to route requests through an API Gateway

• How to secure APIs with JWT Bearer authentication

• How to add logging, correlation IDs, health checks, and observability

• How to run, test, and troubleshoot a complete microservices system

Who This Book Is For

This book is for complete beginners, self-learners, students, junior developers, and aspiring backend developers who want a clear path into microservices with ASP.NET Core. It is ideal for readers who want practical skills, real-world examples, and patient guidance instead of intimidating technical explanations.

Whether you are learning C# Web API development, exploring Docker microservices, or preparing to understand distributed backend systems, this book gives you a supportive foundation.

Table of Contents

1. Understanding Microservices with ASP.NET Core 10

2. Setting Up the Development Environment

3. Building the Catalog Service

4. Adding PostgreSQL and EF Core Persistence

5. Building the Order Service and Connecting Services

6. Using RabbitMQ for Asynchronous Messaging

7. Adding Redis for Caching and Faster Reads

8. Adding an API Gateway

9. Securing and Observing the Microservices System

10. Running, Testing, and Troubleshooting the Complete System

Start your coding journey today.