Principle:Langgenius Dify FeatureFlags
| Knowledge Sources | Dify |
|---|---|
| Domains | Frontend, Configuration |
| Last Updated | 2026-02-12 07:00 GMT |
Overview
Feature Flags defines the system-level feature flag types that control SSO, billing, education plans, and license-gated features within the Dify platform.
Description
The Feature Flags principle governs how the Dify frontend conditionally enables or disables functionality based on system configuration, license tier, and deployment mode. Feature flag types define a structured schema of boolean and enumerated flags that the backend provides to the frontend at initialization. These flags control visibility and behavior of features such as single sign-on authentication, billing management interfaces, educational pricing plans, and enterprise-only capabilities.
The type definitions for feature flags serve as the contract between the backend configuration system and the frontend rendering logic. Each flag is explicitly typed with its possible values and documented with its intended effect, ensuring that frontend developers can correctly implement conditional behavior without ambiguity. The types also enable exhaustive checking in switch statements and conditional branches, so that new flag values are handled everywhere they are consumed.
Feature flags follow a hierarchical evaluation model where platform-level flags can override workspace-level settings, and license constraints take precedence over user preferences. The frontend consumes the resolved flag values and adjusts the UI accordingly, hiding navigation items for unavailable features, showing upgrade prompts for license-gated functionality, and enabling experimental features for opted-in workspaces. This approach allows a single codebase to serve community, cloud, and enterprise deployments with appropriate feature sets.
Usage
Use this principle when:
- Adding new feature flags to control visibility of new functionality
- Implementing conditional UI rendering based on license tier or deployment mode
- Extending the feature flag type schema with new flag categories or value types
Theoretical Basis
Feature Flags is grounded in the Feature Toggle pattern described by Martin Fowler, which categorizes toggles by their longevity and dynamism. The typed flag schema follows the principle of making illegal states unrepresentable, where the type system prevents invalid flag combinations. The hierarchical evaluation model draws from the Chain of Responsibility pattern, where flag values are resolved through a series of configuration sources with defined precedence.