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

Load testing Dapr

Before we activate a more complex test infrastructure for Locust on ACI, it is best to first check, and eventually debug, the Locust test locally.

The following steps take us through preparing the data to enabling autoscaling on a running load test:

  1. Preparing the data via port-forwarding
  2. Testing Locust locally
  3. Locust on ACI
  4. Configuring the HPA

First, we need to make sure the data in our environment can support our scenario. This is what we'll do in the next section.

Preparing the data via port-forwarding

Before we launch the test, which is readily available at chapter10\locust-on-azure\locust\locustfile.py, let's focus on an aspect we oversaw: the SKU for the cookies is randomly composed from cookie001 to cookie999, with the addition of the infamous crazycookie, the main actor (pun intended) of the saga from Chapter 5, Publish and Subscribe.

The code that's being used for our sample Dapr applications is extremely...