Mastering gRPC Using Spring Boot: Build Scalable APIs with Modern RPC—From Scratch to Production

Build High-Performance APIs with gRPC and Spring Boot

Are you ready to take your backend development skills to the next level? gRPC is rapidly becoming the standard for building fast, efficient, and language-agnostic APIs—and when combined with the power of Spring Boot, you can deliver production-ready services with ease.

This practical guide walks you step by step through mastering gRPC in real-world scenarios. From defining Protobuf contracts to securing endpoints, testing with confidence, and deploying to Kubernetes, this book equips you with everything you need to build modern distributed systems.

Inside this book, you’ll learn:

• How to define Protobuf contracts and generate gRPC stubs in Java

• Implement unary, server-streaming, client-streaming, and bidirectional calls

• Secure services with TLS, mTLS, and JWT/OAuth2 interceptors

• Write unit and integration tests with JUnit, grpcurl, and Testcontainers

• Monitor and trace services with Micrometer, OpenTelemetry, Prometheus, and Grafana

• Package and deploy gRPC applications with Docker, Kubernetes, and CI/CD pipelines

Who is this book for?

Java developers, architects, and backend engineers who want to modernize their APIs, master gRPC concepts, and gain hands-on skills for production-ready systems. Whether you’re new to gRPC or migrating from REST, this book has you covered.

Your journey to building robust, scalable, and secure gRPC services starts here.