The Right Way To Use Feature Flags in .NET (targeting users explained)

[@MilanJovanovicTech]

Want to master Clean Architecture? Go here: bit.ly/3PupkOJ Want to unlock Modular Monoliths? Go here: bit.ly/3SXlzSt

[@Neuraville]

This tutorial is a must-watch for anyone wanting to master controlled rollouts and manage different API versions effectively

[@MilanJovanovicTech]

Thanks a lot!

[@orterves]

Excellent overview, this approach looks well worth implementing. One extra step I advocate is, where possible and once v2 has had time to settle in production, to replace the v1 implementation with one that maps from the v2 response to the old v1 response. This allows the code to keep moving forward without the burden of multiple possibly diverging implementations.

[@MilanJovanovicTech]

That's a really solid idea! I'll see if I can mention that in some future post or video.

[@antonmartyniuk]

Amazing video, have never seen someone covering such advanced feature management features. Note: despite having a feature gate, even if a Http request doesn't match the gate and Controller's method won't be executed - the Controller instance and all corresponding dependencies are created. I came into this issue in .NET 6

[@MilanJovanovicTech]

The issue you're seeing is kinda expected with ASPNET. Another reason to keep controllers thin.

[@antonmartyniuk]

@MilanJovanovicTech this was a really specific application I was building and I needed to ensure dependencies were not created when feature gate was forbidden. So I used Lazy for this case

[@vamvdotnet]

I loved this video. Congrats! Top-notch content inside :)

[@MilanJovanovicTech]

Glad you enjoyed it!

[@macmcmillen6282]

Excellent as always. Thanks for all you do, Milan!

[@MilanJovanovicTech]

It's my pleasure!

[@Maran-s2r]

Great Video Milan. I tried and extended with Azure App Configuration. Working perfectly. Thank you.

[@MilanJovanovicTech]

Glad to hear it's working well!

[@rakeshkumarreddymudda]

Believe me you are amazing 👏. More than official dotnet channels I learned more on your channel. Thanks for keeping your vedios free to watch😊.

[@MilanJovanovicTech]

Glad to hear it! More to come :)

[@antondoit]

Very nice as always

[@MilanJovanovicTech]

Thanks a lot

[@10Totti]

Excellent video!

[@MilanJovanovicTech]

Thank you very much!

[@FarukLuki111]

Did I miss something or will your caching never hit because you never enriched the items?

[@MilanJovanovicTech]

The caching is done by whatever calls the targeting context

[@youssefwael8]

Great Video as usual, Milan! One question: Does the FeatureManagement work with Minimal APIs, instead of MVC Attributes on Actions?

[@MilanJovanovicTech]

Yes, it works fine - just with a custom middleware filter

[@mreshboboyev]

This was great content. Can you make a video on integration with Azure and AWS in the future?

[@MilanJovanovicTech]

Sure

[@playmaker1633]

Hello Milan, what do you think about the end of specflow ? Maybe it can be good to do a video about alternatives in some weeks/months

[@MilanJovanovicTech]

I never used to, so I wasn't even aware of the news

[@petrmalecik5661]

Hello Milan, great video. One question though is it possible to have a flags inside my application database, so I can just modify them in runtime? Or the only way is using appsettings or azure? Thank you.

[@MilanJovanovicTech]

Azure App Configuration is the preferred approach here, for easier maintenance. You could use a database - but probably with a custom implementation

[@vladans]

You mentioned Swagger but missed the opportunity to show how this impacts Swagger and how it is represented in Swagger. Nevertheless, it's a good and informative video.

[@MilanJovanovicTech]

I covered Swagger here: kzbin.info/www/bejne/fGrNZItsgNp8ptk

[@vladans]

@MilanJovanovicTech Great, I'll check that out, thanks for the quick reply.

[@simonm97]

Very nice :)

[@MilanJovanovicTech]

I'm glad you liked it!

[@Haasje_X]

It seems the whole versioning package is outdated and not actively maintained at this point (it's a one man show as far as I can see). I tried to use it in a .net9 project but it did not play nice (might just be me though 🙂). Do you have any recommendations on what to use going forward if the Asp.Versioning packages are not an option?

[@MilanJovanovicTech]

What makes you think it's outdated? The last release was ~10 months ago

[@alexaka1]

Do I just setup the targeting context accessor interface in DI with the implementation? How does feature management know about my implementation?

[@MilanJovanovicTech]

You say WithTarget< TargetingContext > kzbin.info/www/bejne/gYjZhIyoiMmIapY

[@RicusNortje]

Nice video. I assume this would be per running instance so does nto auto scale horizontally. We currently use Unleash for our feature flags. Is there an easy way to share the feature flag rollout details via a backplane like Redis?

[@MilanJovanovicTech]

Move the flags into shared config like Azure App Configuration

[@Fenix-pf6mk]

Very goood

[@MilanJovanovicTech]

Thanks!

[@saleem.shaikh]

When is the new course dropping?

[@MilanJovanovicTech]

~2-3 weeks 🤞

[@ГеоргиПопов-я7к]

Why you write records like classes? Shouldn't the records reduce the code ?

[@MilanJovanovicTech]

Yes and no

[@leonardoolaechea8575]

spa proxy with angular and .net, plss

[@MilanJovanovicTech]

That's a very different topic.

[@user-dc9zo7ek5j]

The first package seems pointless, the second package however is amazing.

[@MilanJovanovicTech]

Versioning is pointless? 😅

[@VINAGHOST]

@@MilanJovanovicTech some people just upgrade thing to next version and get rid of old ones, no need versioning :)