Can I use a composite object or dict for the type? So all you need to do is to create the null object and the add and sub function on the type? And I can use a

Can I use a composite object or dict for the type? So all you need to do is to create the null object and the add and sub function on the type? And I can use an implementation of that type as the state for something? How can I guarantee the order? Would I need to use something like a blockchain or is a distributed database enough, as long as only I need the data and trust myself? In a cluster would it make sense to use etcd I think, even better would be a commutative monoid, that doesn't depend on the order. It should be possible to scale the global state in a distributed system very concurrent, because of the commutativity. I would have to store a log (easiest part) and the current state. To sync state between the nodes in a distributed system, they would have to send update messages to each other. They're able to batch process multiple messages to improve throughput.