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Feature Flags: Control and Caution
Feature flags are a powerful tool for selectively rolling out new features to users. They allow for conditional experiences based on individual user authentication or user groups, facilitating controlled exposure to changes. By managing the rollout percentages—whether to 10%, 50%, or 100% of users—developers can monitor the impact of new features on system performance and user experience. This method enhances observability, as it provides insights into any exceptions or bugs linked to new code. A key advantage is the ability to quickly disable features if issues arise, serving as an effective kill switch for managing risks in a production environment.