| Package | Latest | Details |
|---|---|---|
| FeatureOne |  | Provides core functionality to implement feature toggles with no backend storage provider. Needs package consumer to provide IStorageProvider implementation. Ideal for use case that requires custom storage backend. v5.2.0: RelationalCondition, net10.0 support, package upgrades, expanded test coverage. |
| FeatureOne.SQL |  | Provides SQL storage provider for implementing feature toggles using SQL backend. v5.2.0: net10.0 support, package upgrades. |
| FeatureOne.File |  | Provides File storage provider for implementing feature toggles using File System backend. v5.2.0: net10.0 support, package upgrades. |
Feature toggle is a mechanism that allows code to be turned “on” or “off” remotely without the need for a deploy. Feature toggles are commonly used in applications to gradually roll out new features, allowing teams to test changes on a small subset of users before releasing them to everyone.
Feature toggle is typically a logical check added to codebase to execute or ignore certain functionality in context based on evaluated status of the toggle at runitme.
In code, the functionality to be released is wrapped so that it can be controlled by the status of a feature toggle. If the status of the feature toggle is “on”, then the wrapped functionality is executed. If the status of the feature toggle is “off”, then the wrapped functionality is skipped. The statuses of each feature is provided by a store provider external to the application.
The primary benefit of feature flagging is that it mitigates the risks associated with releasing changes to an application. Whether it be a new feature release or a small refactor, there is always the inherent risk of releasing new regressions. To mitigate this, changes to an application can be placed behind feature toggles, allowing them to be turned “on” or “off” in the event of an emergency.
Install the latest nuget package as appropriate.
FeatureOne - for installing FeatureOne for custom IStorageProvider implementation.
NuGet\Install-Package FeatureOne
FeatureOne.SQL - for installing FeatureOne with SQL storage provider.
NuGet\Install-Package FeatureOne.SQL
FeatureOne.File - for installing FeatureOne with File system storage provider.
NuGet\Install-Package FeatureOne.File
Please see Developer Guide for details on how to implement FeatureOne in your project.
If you are having problems, please let me know by raising a new issue.
This project is licensed with the MIT license.
The following previous versions are available:
| Version | Release Notes |
|---|---|
v5.2.0 | Notes |
v5.1.0 | Notes |
v5.0.0 | Notes |
v4.0.0 | Notes |
v3.0.0 | Notes |
v2.0.0 | Notes |
| Version | Release Date | Type | Key Changes | Backward Compatibility |
|---|---|---|---|---|
| v5.0.0 | Previous | Initial | Core feature toggle functionality | N/A (Initial release) |
| v5.1.0 | Nov 03, 2025 | Minor | Security fixes (ReDoS protection, secure type loading), architectural improvements (prefix matching, dependency injection), new features (DateRangeCondition, configuration validation), DI integration | High - maintains all existing functionality with minor security-related behavioral changes |
| v5.2.0 | Mar 18, 2026 | Minor | New condition (RelationalCondition with 5 relational operators), target framework (added net10.0, removed netstandard2.0 and net8.0), package upgrades (all MS packages to 10.0.5), expanded test coverage (98%+ line coverage) | High - fully backward compatible, additive changes only |
Thank you for reading. Please fork, explore, contribute and report. Happy Coding !! :)