Go (Golang) and Microservices: From Idea to Production

This book is a practical guide for developers who want to master building microservice architecture in Go (Golang). Unlike many theoretical publications, the author focuses on real-world examples and typical tasks that every developer faces when transitioning from a monolith to microservices.

What is this book about?

The book covers the full cycle of microservice development in Go: from design and implementation to deployment and monitoring. You will learn how to properly organize code using Go's built-in capabilities (goroutines, channels, interfaces) and which patterns work best in a distributed environment.

• Microservice Design: How to break a monolithic application into services, define their boundaries, and choose interaction protocols (REST, gRPC, GraphQL).
• Working with Data: Managing transactions in a distributed system, the Saga pattern, CQRS, and Event Sourcing using Go examples.
• Networking and Communication: Writing reliable HTTP/gRPC clients and servers, error handling, timeouts, and retries.
• Containerization and Orchestration: Building lightweight Docker images for Go applications, deploying to Kubernetes, Helm charts.
• Observability: Logging (structured logs), metrics (Prometheus), and tracing (OpenTelemetry) in Go microservices.
• Testing: Unit tests, integration tests with containers (testcontainers), load testing.

Who is this book for?

• Python developers who want to learn Go for backend development and microservices.
• Go developers who write monoliths and want to transition to a microservice architecture.
• DevOps engineers who want to gain a deeper understanding of the internal workings of Go services.
• Team Leads and architects choosing technologies for a new distributed system.

What will you learn after reading?

• How to write idiomatic Go code for microservices using community best practices.
• How to implement Service Discovery, Circuit Breaker, and Rate Limiting without third-party libraries.
• How to efficiently work with PostgreSQL, Redis, and Kafka in Go microservices.
• How to set up a CI/CD pipeline for Go projects with GitHub Actions.
• How to avoid common mistakes when working with goroutines and memory in high-load systems.

The author — Alexey Petrov, a senior backend developer with 10 years of experience. He has worked at major fintech companies, where he migrated monoliths to microservices. He runs a blog about Go and architecture and speaks at conferences.

The book is suitable for both Go beginners and experienced developers — everyone will find useful practices and ready-made solutions. All code examples are available in the repository on GitHub.