Book Image

Azure DevOps Server 2019 Cookbook - Second Edition

By : Tarun Arora, Utkarsh Shigihalli
Book Image

Azure DevOps Server 2019 Cookbook - Second Edition

By: Tarun Arora, Utkarsh Shigihalli

Overview of this book

Previously known as Team Foundation Server (TFS), Azure DevOps Server is a comprehensive on-premise DevOps toolset with a rich ecosystem of open source plugins. This book will help you learn how to effectively use the different Azure DevOps services. You will start by building high-quality scalable software targeting .NET, .NET Core and Node.js applications. Next, you will learn techniques that will help you to set up end-to-end traceability of your code changes, from design through to release. Whether you are deploying software on-premise or in the cloud in App Service, Functions, or Azure VMs, this book will help you learn release management techniques to reduce failures. As you progress, you will be able to secure application configuration by using Azure Key Vault. You will also understand how to create and release extensions to the Azure DevOps marketplace and reach the million-strong developer ecosystem for feedback. Later, the working extension samples will even allow you to iterate changes in your extensions easily and release updates to the marketplace quickly. By the end of this book, you will be equipped with the skills you need to break down the invisible silos between your software development teams, and transform them into a modern cross-functional software development team.
Table of Contents (14 chapters)
Title Page
About Packt
Contributors
Preface
Index

Using feature flags to test in production


We are in an era of continuous delivery, where we are expected to quickly deliver software that is stable and performant. We see development teams embracing a suite of continuous integration/delivery tools to automate their testing and QA, all while deploying at an accelerated cadence. No matter how hard we try to mitigate the risk of software delivery, almost all end-user software releases are strictly coupled with some form of code deployment. This means that companies must rely on testing and QA to identify all issues before a release hits production. There are two key challenges when testing features in test environments:

  • Testing in test environments can be challenging if your test scenarios depend on production-quality data. It can take a lot of effort to create this kind of data in test environments and it's likely you'll still miss out on key test scenarios, since in some cases the effort involved in creating this data outweighs the benefits...