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

Implementing actors in an e-commerce reservation system

Equipped with information about the actor’s pattern and with a plan to implement the evolution of our sample project by introducing Dapr actors, we now have several steps to complete, as follows:

  1. Preparing the actor’s projects
  2. Implementing the actor’s model
  3. Accessing actors from other Dapr applications
  4. Inspecting the actor’s state

Let’s start by creating the .NET projects.

Preparing the Actor’s projects

To implement actors with Dapr in C#, we must create an actor interface project that’s separate from the actor’s service implementation in two different projects.

The actor’s interface will be referenced by the other services or clients that need to interact with the actors. Let’s create the interface project, as follows:

PS C:\Repos\dapr-samples\chapter07> dotnet new classlib -o
sample.microservice.reservationitemactor...