Book Image

Practical Microservices with Dapr and .NET

By : Davide Bedin
Book Image

Practical Microservices with Dapr and .NET

By: Davide Bedin

Overview of this book

Over the last decade, there has been a huge shift from heavily coded monolithic applications to finer, self-contained microservices. Dapr is a new, open source project by Microsoft that provides proven techniques and best practices for developing modern applications. It offers platform-agnostic features for running your applications on public cloud, on-premises, and even on edge devices. This book 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 offers ease of implementation while allowing you to work with multiple languages and platforms. You'll also understand how Dapr's runtime, services, 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 to build 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. By the end of this book, you'll be able to write microservices easily using your choice of language or framework by implementing industry best practices to solve problems related to distributed systems.
Table of Contents (16 chapters)
1
Section 1: Introduction to Dapr
4
Section 2: Building Microservices with Dapr
10
Section 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. Create the Actor's projects.
  2. Implement the actor's model.
  3. Access actors from other Dapr applications.
  4. Inspect 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 -f net5.0 -o sample.microservice.reservationitemactor.interfaces
PS C...