Actor Clustering using zio-keeper

[softinio]

No description provided.

[mijicd]

I'm very happy to see this one coming. At the moment, ZIO Keeper can be used to build clusters and we're polishing our membership protocols (HyParView and SWIM), which is a good starting point.

I propose to use this ticket for discussing design and spawn concrete implementation tasks out of it as there will be quite a lot of work.

Looping in @pshemass and @mschuwalow as it might be of interest to them.