Describe Delegated Storage concept

[pkosiec]

Description

Changes proposed in this pull request:

• Describe Delegated Storage concept

[mszostok]

Overall, I agree with this proposal, it was easy to ready and follow 👍

IMO as a follow-up after this proposal, we start with investigations to check how we can reuse as much as we can from available projects/tools.

E.g. do an investigation if we can easily wrap the Dapr store management into this concept. I see a lot of correlation.

Other idea is to, decided that we will do the minimal scope, and all of those will be implemented with Go libs e.g. https://github.com/graymeta/stow, https://github.com/google/go-cloud just as w minimal scope. We will prove that it’s working. Next, we will extract it to dedicated services and use gRPC. Unfortunately, currently, I'm not convinced that we need the whole concept to be implemented. Of course, we need to describe the target arch, but maybe it will be beneficial to describe also midterm solution.

[mszostok]

Still a few things need to be described, but as before I agree with the overall proposal 👍

[mszostok]

It was quite long “journey” but IMO we finally got it 😄 🚀

(I'm a bit scared when it comes to implement that 😄 )