I've been working on Octopii for around a year now, a "batteries-included" library that aims to make building distributed systems in Rust as easy as writing a standard struct

Octopii acts like a "Distributed Systems Kernel." It handles the physics of the cluster (storage, networking, leader election) so you can focus entirely on your application logic.

It's effectively the infrastructure behind something like Cloudflare Durable Objects, but packaged as a crate you can run on your own hardware.