FIG 1.4
Hadron
Durability & State Machines
Composite particle — durable, structured, persistent
Durable job store persisting workflow state across restarts. Manages step state machines (pending → dispatched → executing → succeeded/failed), retry logic with exponential backoff, dead letter queues, and persistent idempotency.
Outputs
Durable workflow state + job receipts + replay cursors + DLQ entries
Must Never
Implement business policy, execute connectors directly, make routing decisions
Pipeline Position