Feature Flags

The cluster centers on discussions about feature flags (or toggles), including their uses for gradual rollouts, A/B testing, and continuous delivery, recommended tools like LaunchDarkly and Unleash, and debates on implementation, alternatives, and best practices.

📉 Falling 0.3x DevOps & Infrastructure
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Keywords

LaunchDarkly JOB flickr.net train.io martinfowler.com github.com API toggles.html CEO UI flags feature flag flagging features rollout gradual toggle users config

Sample Comments

getrealyall • Sep 23, 2023 • View on HN

This was written by a company selling feature flag software. Use that information as thou wilt.

odie5533 • Dec 30, 2025 • View on HN

What do you use for feature flags?

lantastic • Aug 3, 2016 • View on HN

What are the situations where you did not (or would not) opt to use feature flags?

gshdg • Jul 13, 2019 • View on HN

Why would you need a service to manage your feature flags?

gdsdfe • Jun 18, 2020 • View on HN

I think some people are using feature flags for this

dmitriid • Oct 29, 2020 • View on HN

Feature flags are used for gradual rollout and testing of features. Including, but not limited by, A/B tests, region-locking features, rolling to features to internal users only and so on.For example, you're developing a new version of the checkout page for your company from scratch (it can be a store selling physical goods, or a subscription service, or anything that requires payment). It means that for a while it will not have feature parity with your existing checkout page.So

mo_chahin • Feb 16, 2024 • View on HN

What's the difference between this and a feature flagging tool?

dyeje • Jun 18, 2020 • View on HN

Hard to say without more detail, but this seems like a good use case for feature flagging.

dr_dshiv • Jan 28, 2022 • View on HN

Do you use any tools, like LaunchDarkly, for the feature flagging?

je42 • Nov 13, 2016 • View on HN

you usually also need feature flags.