Book Image

Microservices Communication in .NET Using gRPC

By : Fiodar Sazanavets
Book Image

Microservices Communication in .NET Using gRPC

By: Fiodar Sazanavets

Overview of this book

Explore gRPC's capabilities for faster communication between your microservices using the HTTP/2 protocol in this practical guide that shows you how to implement gRPC on the .NET platform. gRPC is one of the most efficient protocols for communication between microservices that is also relatively easy to implement. However, its official documentation is often fragmented and.NET developers might find it difficult to recognize the best way to map between C# data types and fields in gRPC messages. This book will address these concerns and much more. Starting with the fundamentals of gRPC, you'll discover how to use it inside .NET apps. You’ll explore best practices for performance and focus on scaling a gRPC app. Once you're familiar with the inner workings of the different call types that gRPC supports, you'll advance to learning how to secure your gRPC endpoints by applying authentication and authorization. With detailed explanations, this gRPC .NET book will show you how the Protobuf protocol allows you to send messages efficiently by including only the necessary data. You'll never get confused again while translating between C# data types and the ones available in Protobuf. By the end of the book, you’ll have gained practical gRPC knowledge and be able to use it in .NET apps to enable direct communication between microservices.
Table of Contents (17 chapters)
1
Section 1: Basics of gRPC on .NET
5
Section 2: Best Practices of Using gRPC
9
Section 3: In-Depth Look at gRPC on .NET

Why an API versioning strategy is important

We will begin by setting up two applications. We will pretend that these two applications are developed by different teams and they don't have access to shared gRPC dependencies. This setup will be done to demonstrate why API versioning is so important.

For convenience, while using an IDE, you may add these applications to the same solution. But this is not necessary, as these applications will not share any dependencies.

Creating a server application

We will start by executing the following command to create an ASP.NET Core application based on the gRPC Service template:

dotnet new grpc -o GrpcServer

In the GrpcServer project folder that has been created, we will remove the default greet.proto file from the Protos folder. Then, we will place the stats.proto file in there with the following service definition:

syntax = "proto3";
 
package stats;
 
service Status {
  rpc GetStatus (StatusRequest)...