Book Image

Practical Microservices with Dapr and .NET - Second Edition

By : Davide Bedin
Book Image

Practical Microservices with Dapr and .NET - Second Edition

By: Davide Bedin

Overview of this book

This second edition will help you get to grips with microservice architectures and how to manage application complexities with Dapr in no time. You'll understand how Dapr simplifies development while allowing you to work with multiple languages and platforms. Following a C# sample, you'll understand how Dapr's runtime, building blocks, and software development kits (SDKs) help you to simplify the creation of resilient and portable microservices. Dapr provides an event-driven runtime that supports the essential features you need for building microservices, including service invocation, state management, and publish/subscribe messaging. You'll explore all of those in addition to various other advanced features with this practical guide to learning Dapr. With a focus on deploying the Dapr sample application to an Azure Kubernetes Service cluster and to the Azure Container Apps serverless platform, you’ll see how to expose the Dapr application with NGINX, YARP, and Azure API Management. By the end of this book, you'll be able to write microservices easily by implementing industry best practices to solve problems related to distributed systems.
Table of Contents (20 chapters)
1
Part 1: Introduction to Dapr
5
Part 2: Building Microservices with Dapr
11
Part 3: Deploying and Scaling Dapr Solutions

Invoking services with Dapr

In this section, we will learn how Dapr provides our microservices with the ability to interact directly via service-to-service invocation.

Services are the centerpiece of Dapr. A service in Dapr enables a developer to easily make the API of a microservice discoverable and reachable to other components inside the hosting environment, whether it be a self-hosted or Kubernetes cluster.

The Dapr service invocation API, which we will leverage via the abstraction offered by the Dapr .NET SDK, provides discovery and reliable communication, with standard protocols such as HTTP and gRPC.

In previous chapters, we built a few Dapr service samples, but we must give proper attention to the details, which we will do in this chapter. How can a service be reached via Dapr? That is going to be the focus of this chapter:

Figure 4.1 – Service-to-service invocation in Dapr

In Figure 4.1, we can visualize the path requests and responses...