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

Debugging gRPC server components inside a .NET application

An ASP.NET Core application with gRPC capabilities allows you to get gRPC middleware to output internal debugging information to the application console. It is switched off by default, but we can turn it on by applying a simple change to the application settings.

Likewise, the gRPC server application allows you to use interceptors, just like we did on the client. The server-side interceptor would inherit from the same base class as the client-side one, but it will have different methods defined in it that are only applicable to the server-side events:

  1. To enable the debug log from the gRPC middleware to be printed in the console, you would need to open the appsettings.json file (and appsettings.Development.json, if you have it) in the IotDeviceManager project folder, locate the LogLevel section, and insert the following entry within it:
    "Grpc": "Debug"
  2. Now, we will add our server-side interceptor...