feature flag

A feature flag is a software development technique that lets a team turn a feature in deployed code on or off through configuration, without redeploying.

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A feature flag, also called a feature toggle, is a software development technique in which the code for a feature is deployed first and then switched on or off through a configuration setting. It separates deploying code from releasing a feature to users.

Teams use feature flags for gradual rollouts to a subset of users, for A/B testing and for turning off a problematic feature without reverting code. Flags that are no longer needed can add complexity if they are left in the codebase.

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Articles covering this entry

Documentation changes count as low risk, and so does code behind a feature flag, a switch that lets a team ship code while keeping the new behavior turned off.

Claude built a benchmark that reproduced it, opened pull requests behind feature flags, and checked field data after deployment.


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