March 2019
Intermediate to advanced
40 pages
40m
English
Overview
Whether you want to fine-tune operational control or conduct A/B/n tests, feature flags make it easy to deliver software features quickly and safely. With this practical book, software engineers will learn eight best practices for using feature flags in production, including how to configure and manage a growing set of feature flags within your product, maintain them over time, manage infrastructure migrations, and more.
Pete Hodgson and Patricio Echagüe demonstrate how feature flags help modern product delivery teams reduce risk by decoupling code deployment from feature release. You’ll learn how to maintain flag consistency in different scenarios and how to develop, test, and work with feature flags at scale.
With these practices, you will:
- Make sure users in a test still have access once a feature is ramped up
- Learn flag strategies for transitioning users from "anonymous" to "logged in"
- Keep flagging decisions on the server to maintain performance and security
- Use patterns to make incremental, backward-compatible database changes
- Implement flagging decisions as close to business logic as possible
- Have each flag owned by one team responsible for rollout and monitoring
- Consider testability when using feature flags in combination with CI practices
- Maintain a process for identifying and tracking flags
- Examine the effect a feature flag is having on your business
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.