Feature flags reduce rollout risk, but forgotten flags create hidden code branches and unpredictable combinations. Their lifecycle begins at creation and ends only when both the flag and dead code are removed.
Specify type and purpose
Distinguish release, experiment, operations and permission flags. Each has a different lifespan and expected behaviour if the flagging service fails.
Assign an owner and expiry date
Record responsibility, creation date, expected decision and removal ticket. A flag without an expiry can accidentally become permanent configuration.
Define a safe default
Decide what happens on a timeout, missing configuration or unknown user. Fallback behaviour should protect data and essential operation.
Track exposure and dependencies
Know which users receive each variant and which services consume the flag. This keeps rollback and analysis reliable.
Resolve the branching code
After the decision, retain the chosen implementation and remove the flag, obsolete tests and old branch. Confirm that clients and dashboards contain no stale references.
This framework is DigitalNow's original editorial methodology.