Kotlin and Kubernetes: Microservices Development and Orchestration

This book is a practical guide for developers who want to master building modern microservice applications in Kotlin and learn to manage them effectively with Kubernetes. The author combines two powerful tools: the expressive and concise Kotlin language and the industrial container orchestration platform, offering the reader a complete development cycle — from writing code to deploying to production.

What the book is about

The book covers key aspects of building cloud applications:

• Kotlin basics for microservices: language idioms, coroutines for asynchronous programming, working with Ktor and Spring Boot.
• Containerization: creating efficient Docker images for Kotlin applications, optimizing size and build time.
• Kubernetes architecture: Pods, services, ConfigMap, Secrets, Ingress — configuration and management.
• Deployment and scaling: Deployment, StatefulSet, Horizontal Pod Autoscaler, update strategies (Rolling Update, Blue/Green).
• Monitoring and observability: logging with Logback and ELK, metrics with Micrometer and Prometheus, tracing with Jaeger.
• CI/CD: setting up pipelines with Jenkins and GitHub Actions for automated building, testing, and deployment.

Who this book is for

This book will be useful for:

• Java and Kotlin developers looking to transition to a microservices architecture;
• DevOps engineers who want to gain a deeper understanding of how Kotlin applications work in Kubernetes;
• Architects seeking practical patterns for building fault-tolerant systems;
• Students and beginners familiar with programming basics who want to learn the modern stack.

What you will learn

After reading this book, you will be able to:

• Design and write microservices in Kotlin using Ktor and Spring Boot;
• Package applications into Docker containers and publish them to a registry;
• Set up a Kubernetes cluster (Minikube, Kind, or cloud solutions);
• Implement service discovery, load balancing, and health checks;
• Ensure fault tolerance and automatic scaling;
• Implement centralized logging and monitoring;
• Automate the delivery process using CI/CD.

The book contains numerous practical examples, ready-to-use code snippets, and step-by-step instructions. All examples are available in the accompanying repository. This is an ideal resource for those who want to master the modern development stack and take their professionalism to the next level.