Microsoft has a pretty good feature management system available to use in most .NET applications. It’s based around IConfiguration and it’s quick to set up with a JSON file to manage feature flags.
It has some pretty nice features like setting a feature to be enabled based on a time window, it can be configured based on a percentage, and then you have the basic on/off switch mode.
Now, I don’t really have a need for anything fancy. I would, however, like to be able to pull in my feature flags from a database. I need to go through a Rest API in order to access that data due to some project restrictions. So let me show you what I did to get that working.
Just want the code?
Here is a GitHub repository with the code from this article.
https://github.com/BenBurge/Medium.Articles.FeatureFlags
The Setup
- Using .NET 7
- Using Microsoft.EntityFrameworkCore
- Postgres DB and the accompanying Nuget package Npgsql.EntityFrameworkCore.PostgreSQL
- Using the Microsoft.FeatureManagement Nuget package
- A basic API project
- A basic console application
