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)

The life cycle of an RPC

Now that we understand the basic RPC operations that can be executed in gRPC and the different types of RPC, we can take a look at the life cycle of an RPC. In this section, we are going to go top-down by first explaining the overall idea of what is happening when a client sends a request and the server receives it, sends a response, and the client receives it. And after that, we will go a bit deeper and talk about three stages:

  1. The connection – What happens when a client connects to a server?
  2. The client side – What happens when a client sends a message?
  3. The server side – What happens when a server receives a message?

Important note

gRPC has multiple implementations in different languages. The original one was in C++ and some implementations are just wrappers around the C++ code. However, gRPC Go is a standalone implementation. This means that it was implemented from scratch in Go and doesn’t wrap up the...