Add ResolveAll provider method about dotnet-sdk HOT 1 CLOSED

Hey @luk355 !

It's a bit confusing, but that repository doesn't contain general schemas for OpenFeature (in fact we should rename the repo). It contains schemas for flagd. flagd is an OpenFeature compliant provider, but it's schema only applies to it - not to all providers.

Currently, the provider interface in the OpenFeature spec does not define a "bulk resolution" method (to evaluate all flags at the same time). This is an intentional choice, as in discussions with many vendors and implementations, bulk evaluation was found to have some drawbacks. However, that doesn't prevent the provider (which is actually responsible for evaluating the flags) from doing some kind of bulk evaluation ahead of time and serving values from a cache hidden from the OpenFeature SDK. That's exactly what the flagd-web provider does, which uses the ResolveAll method you mention above.

I'd like to know more about your use-case - do you need to expose some kind .getAllFlags method/API to your application developers? Or is this more of a technical detail about getting flag data to the provider?

See also: open-feature/ofep#13

from dotnet-sdk.