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Azure DevOps Explained

You're reading from  Azure DevOps Explained

Product type Book
Published in Dec 2020
Publisher Packt
ISBN-13 9781800563513
Pages 438 pages
Edition 1st Edition
Languages
Concepts
Authors (3):
Sjoukje Zaal Sjoukje Zaal
Profile icon Sjoukje Zaal
Stefano Demiliani Stefano Demiliani
Profile icon Stefano Demiliani
Amit Malik Amit Malik
Profile icon Amit Malik
View More author details
Toc

Table of Contents (17) Chapters close

Preface 1. Section 1: DevOps Principles and Azure DevOps Project Management
2. Chapter 1: Azure DevOps Overview 3. Chapter 2: Managing Projects with Azure DevOps Boards 4. Section 2: Source Code and Builds
5. Chapter 3: Source Control Management with Azure DevOps 6. Chapter 4: Understanding Azure DevOps Pipelines 7. Chapter 5: Running Quality Tests in a Build Pipeline 8. Chapter 6: Hosting Your Own Azure Pipeline Agent 9. Section 3: Artifacts and Deployments
10. Chapter 7: Using Artifacts with Azure DevOps 11. Chapter 8: Deploying Applications with Azure DevOps 12. Section 4: Advanced Features of Azure DevOps
13. Chapter 9: Integrating Azure DevOps with GitHub 14. Chapter 10: Using Test Plans with Azure DevOps 15. Chapter 11: Real-World CI/CD Scenarios with Azure DevOps 16. Other Books You May Enjoy

Using Feature Flags to test in production

In this demonstration, we are going to create a new .NET Core application in Visual Studio Code. Then, we are going to implement a Feature Flag for this application.

We are going to add a very basic Feature Flag that changes the welcome message from Welcome to Welcome to Learn Azure DevOps. This is only going to be tested by a subset of users. Therefore, we need to open Visual Studio Code and create a new Razor application with .NET Core. I have created a new folder on my local filesystem called FeatureFlags for this. Open this folder in Visual Studio Code. Check the next section for the detailed steps.

Creating a new .NET Core application

To create a new .NET Core application, follow these steps:

  1. With Visual Studio Code open, click on Terminal > New terminal from the top menu.
  2. In the Terminal, add the following line of code to create a new project:
    dotnet new webapp -o RazorFeatureFlags
    code -r RazorFeatureFlags
  3. ...
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