Recipe: Coordination Service

MicroRaft is a strong foundation for Java coordination services such as leader-election helpers, membership registries, schedulers, and control-plane decisions.

Typical coordination state machine

  • registered members and their epochs
  • elected coordinators, ownership terms, and scheduler state
  • work assignment records and transitions
  • distributed barriers, rollouts, or control-plane transitions

Why a coordination service fits

  • coordination services need agreement and ordering more than raw throughput
  • state transitions benefit from explicit committed history
  • the embedding model works well for platform internals and control planes

Design rules that matter

  • keep the state machine deterministic and explicit
  • define read consistency per endpoint instead of using one query mode everywhere
  • test membership changes, stale leaders, and split-brain recovery paths early