Book Image

gRPC Go for Professionals

By : Clément Jean
Book Image

gRPC Go for Professionals

By: Clément Jean

Overview of this book

In recent years, the popularity of microservice architecture has surged, bringing forth a new set of requirements. Among these, efficient communication between the different services takes center stage, and that's where gRPC shines. This book will take you through creating gRPC servers and clients in an efficient, secure, and scalable way. However, communication is just one aspect of microservices, so this book goes beyond that to show you how to deploy your application on Kubernetes and configure other tools that are needed for making your application more resilient. With these tools at your disposal, you’ll be ready to get started with using gRPC in a microservice architecture. In gRPC Go for Professionals, you'll explore core concepts such as message transmission and the role of Protobuf in serialization and deserialization. Through a step-by-step implementation of a TODO list API, you’ll see the different features of gRPC in action. You’ll then learn different approaches for testing your services and debugging your API endpoints. Finally, you’ll get to grips with deploying the application services via Docker images and Kubernetes.
Table of Contents (13 chapters)

What is gRPC doing?

gRPC is described as “Protobuf over HTTP/2.” This means that gRPC will generate all the communication code wrapping the gRPC framework and stand on Protobuf’s shoulders to serialize and deserialize data. To know which API endpoints are available on the client and server, gRPC will look at the services defined in our .proto files, and from that, it will learn the basic information needed to generate some metadata and the functions needed.

The first thing to understand with gRPC is that there are multiple implementations. In Go, for example, you get a pure implementation of gRPC. This means that the entire code generation process and communication is written in Go. Other languages might have similar implementations, but a lot of them are wrappers around the C implementation. While we do not need to know anything about them in the context of this book, it is important to know that they are available because it explains the presence of plugins...