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.