Feature flag use cases
The practical patterns teams reach for once flags are in place. How each one works, where it fits, and how to run it with Featureflip.
Progressive rollouts
Ship a new feature to 1% of users first, watch the metrics, then expand in steps. The percentage is a dashboard setting, not a redeploy, and the same users stay in the cohort as you ramp.
Limit blast radius · real production signal · roll back in seconds
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Feature flag kill switch
Wrap a risky or expensive code path in a flag so you can disable it instantly in production. Flip it off and every SDK serves the safe fallback within seconds, with no rebuild or rollback.
Mitigate in seconds · scoped to one feature · fail-safe defaults
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A/B testing
Serve two variations to a sticky 50/50 split and log who saw which one. The flag delivers the experiment, holds users in their group, and records exposure; your analytics decide the winner.
Sticky bucketing · exposure tracking · test becomes the rollout
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New to feature flags?
Start with the concept guide for how flags, variations, environments, and the evaluation model fit together — then come back for the patterns.
Ready to ship behind a flag?
Start free on the Solo plan — 10 flags, 2 environments, no credit card.