C# (.NET) and Microservices: Architecture, Development, and Deployment

The book "C# (.NET) and Microservices" is a comprehensive practical guide for developers who want to master the modern approach to building distributed systems on the .NET platform. In the era of cloud technologies and scalable applications, microservice architecture has become the de facto standard, and this book will help you navigate the path from a monolith to a flexible, fault-tolerant system.

What is this book about?

The book covers the full lifecycle of a microservice application: from design and development to deployment and monitoring. You will learn how to properly decompose a monolithic application, organize inter-service communication, and ensure reliable operation in production.

Key topics:

• Architectural patterns: API Gateway, Service Discovery, Circuit Breaker, Saga, CQRS, and Event Sourcing
• Inter-service communication: gRPC, RESTful API, RabbitMQ, Kafka, and SignalR
• Containerization and orchestration: Docker, Docker Compose, Kubernetes (k8s), Helm charts
• Databases: SQL Server, PostgreSQL, MongoDB, Redis — choosing a strategy for each service
• Security: OAuth 2.0, OpenID Connect, JWT tokens, IdentityServer
• Observability: OpenTelemetry, Prometheus, Grafana, ELK Stack (Elasticsearch, Logstash, Kibana)
• CI/CD: GitHub Actions, Azure DevOps, GitLab CI — build and deployment automation

Who is this book for?

The book will be useful for:

• C# Backend developers who want to transition from monoliths to microservices
• Software architects looking for practical examples of implementing distributed systems
• DevOps engineers working with the .NET ecosystem and needing to understand the specifics of microservices
• Team Leads planning to refactor an existing application

What will you learn by reading the book?

• How to design service boundaries (Bounded Context) using Domain-Driven Design
• How to implement synchronous and asynchronous communication between services
• How to ensure fault tolerance using Polly and the Retry pattern
• How to deploy microservices in Kubernetes and configure auto-scaling
• How to organize distributed logging and tracing
• How to test microservices: integration tests, contract tests (Pact), infrastructure-level tests

Why choose this book?

Unlike theoretical materials, the book contains ready-to-use code examples, project templates, and step-by-step instructions. All examples are written in the current versions of C# 12 and .NET 8, using the latest stable libraries. You will get not just knowledge, but a working framework for your next microservice project.

C# (.NET) and Microservices is your reliable guide in the world of distributed systems, which will save you months of experimentation and help you avoid the typical mistakes of beginner teams.