I'm currently working on a side project, a distributed in-process key/value store for .NET Standard, which might be interesting in this context. I hope you'll pardon the shameless plug, but I'm interested in getting feedback. Particularly, what to focus on, what use cases, missing features... And of course, if you see any issues with the approach.
It needs more work, but I think the eventually consistent part could already be useful for a simple distributed cache layer atop a classic relational DB.
https://github.com/jbakic/Shielded.Gossip
It needs more work, but I think the eventually consistent part could already be useful for a simple distributed cache layer atop a classic relational DB.