Over the past few years, DevOps has become the de facto approach for designing, building, and delivering software. Feature management is now extending the DevOps methodology to allow applications to change on demand and run experiments to validate the success of new features. If you want to make feature management happen, LaunchDarkly is the tool for you.
This book explains how feature management is key to building modern software systems. Starting with the basics of LaunchDarkly and configuring simple feature flags to turn features on and off, you'll learn how simple functionality can be applied in more powerful ways with percentage-based rollouts, experimentation, and switches. You'll see how feature management can change the way teams work and how large projects, including migrations, are planned. Finally, you'll discover various uses of every part of the tool to gain mastery of LaunchDarkly. This includes tips and tricks for experimentation, identifying groups and segments of users, and investigating and debugging issues with specific users and feature flag evaluations.
By the end of the book, you'll have gained a comprehensive understanding of LaunchDarkly, along with knowledge of the adoption of trunk-based development workflows and methods, multi-variant testing, and managing infrastructure changes and migrations.
publication date
2021-10-29
what you will learn
Get to grips with the basics of LaunchDarkly and feature flags
Roll out a feature to a percentage or group of users
Find out how to experiment with multi-variant and A/B testing
Discover how to adopt a trunk-based development workflow
Explore methods to manage infrastructure changes and migrations
Gain an in-depth understanding of all aspects of the LaunchDarkly tool
key features
Learn how to work with LaunchDarkly to turn features on and off within your production applications * Explore the ways in which feature management can change how software is built and how teams work * Master every aspect of LaunchDarkly’s functionality to test in production and learn from your users
approach
Readers will be introduced to the concept of feature management and where it fits within a good DevOps practice. Next, the reader will be shown how to work with LaunchDarkly’s feature flags and their various applications, all the way through to the different approaches available for developing and delivering software. As the reader progresses so does the complexity of the concepts being covered
audience
This book is for developers, quality assurance engineers and DevOps engineers. This includes individuals who want to decouple the deployment of code from the release of a feature, run experiments in production, or understand how to change processes to build and deploy software. Software engineers will also benefit from learning how feature management can be used to improve products and processes. A basic understanding of software is all that you need to get started with this book as it covers the basics before moving on to more advanced topics.
short description
Feature Management with LaunchDarkly explores in detail the ways in which LaunchDarkly can be used to safely and easily change production systems to turn features on and off, help with infrastructure migrations, reduce costs, and even help to gain insights from your users through experimentation and testing in production.
subtitle
Discover safe ways to make live changes in your systems and master testing in production
keywords
LaunchDarkly, Toggle, Feature Flag, DevOps, CI/CD, Telemetry, Migration, trunk-based development, Application Performance Monitoring, Debugger, multivariate testing, A/B testing
Product ISBN
9781800562974
