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

Enabling bi-directional streaming

We have now reached the final type of gRPC call—a bi-directional streaming RPC. As the name suggests, this RPC can have both client-initiated and server-initiated streams – and those streams don't necessarily have to depend on one another.

Enabling server-side components for bi-directional streaming

As we did previously, first, we will add a bi-directional rpc to the relevant proto file. Then, we will add the method's implementation to our C# code:

  1. First, we will add the following rpc definition to the DeviceManager service definition in the device_management.proto file, which is located in the GrpcDependencies project:
    rpc UpdateAndConfirmBatch (stream DeviceDetails) returns 
    (stream DeviceDetails);
  2. Add the following method signature to the IDeviceStatusCache interface of the DeviceManagerService project:
    DeviceManagement.DeviceDetails GetDevice(int deviceId);
  3. Add the following method implementation to the...