JavaScript (Node.js) and Kubernetes: Deployment and Orchestration

The book "JavaScript (Node.js) and Kubernetes" is a practical guide that bridges the gap between Node.js development and operations in modern container environments. Unlike abstract textbooks, this book offers specific recipes and patterns that can be immediately applied in real projects.

What this book is about

You will learn how to turn an ordinary Node.js application into a production-ready system capable of withstanding high loads and automatically recovering from failures. The book covers the full cycle: from containerizing the application with Docker to configuring complex orchestration scenarios in Kubernetes.

• Node.js Containerization: creating lightweight Docker images, optimizing layers, working with multi-stage builds to reduce container size.
• Kubernetes Basics: Pods, Deployments, Services, ConfigMaps, and Secrets. Analysis of typical mistakes when deploying Node.js applications.
• Microservice Architecture: designing services on Node.js, inter-service communication via REST and gRPC, state management.
• Scaling: horizontal scaling of Node.js applications, using the Horizontal Pod Autoscaler, working with queues and background tasks.
• CI/CD Pipelines: automated building, testing, and deployment to Kubernetes using GitHub Actions and GitLab CI.
• Monitoring and Observability: logging with Winston and Loki, Prometheus metrics, request tracing via Jaeger.

Who this book is for

The book is intended for:

• Node.js developers who want to master DevOps practices and learn how to deploy their applications to production.
• Full-stack engineers transitioning from monolithic architecture to microservices.
• DevOps engineers familiar with Kubernetes but wanting to understand the specifics of working with the Node.js runtime.
• Tech leads planning to migrate existing Node.js projects to Kubernetes.

What you will learn

• How to properly containerize a Node.js application so it runs efficiently in a cluster.
• Why standard Node.js deployment in Kubernetes often leads to problems and how to avoid them.
• How to configure health checks, graceful shutdown, and resource management for Node.js pods.
• How to set up zero-downtime deployment for critical services.
• How to use Kubernetes for handling asynchronous tasks and WebSocket connections.
• How to configure a Service Mesh (Istio) for traffic management between microservices on Node.js.

The book contains no fluff — only proven, ready-to-apply solutions. All examples come with working code and configuration files that can be downloaded from the GitHub repository.

This is not just a textbook, but a desk reference for anyone who wants their Node.js applications to run stably, scale automatically, and not require late-night calls from the on-call engineer.

Prerequisites: It is assumed that the reader is familiar with the basics of JavaScript and Node.js (asynchrony, modules, Express.js). Experience with Docker and Kubernetes is not required — everything necessary will be covered in the first chapters.