Replica IDs

A ReplicaId identifies which node performed an operation. It is an opaque wrapper around a string, provided by lattice_core.

import lattice_core/replica_id

let node = replica_id.new("node-a")

Most CRDTs in lattice require a ReplicaId at construction time:

• GCounter, PNCounter — to track per-replica contributions
• LWWRegister — for deterministic tie-breaking when timestamps are equal
• MVRegister, ORSet, ORMap — for causal tagging

A few types do not require one because they have no per-replica state: GSet, TwoPSet, and LWWMap.

Choose IDs that are unique across your system. In practice, hostnames, UUIDs, or node names all work — the only requirement is that no two active replicas share the same ID.