Use pub/sub backbones where handheld scans, PLC signals, and inventory services exchange facts rather than commands. Security policies on topics, schema validation, and bounded contexts prevent accidental coupling. When one service stalls, queues absorb spikes and retry logic respects backoff, avoiding runaway loops or data drift.
Mirror racks, lanes, and flows in a safe staging environment that streams simulated events from historical peaks. Makers validate logic visually, spot race conditions, and test failure playbooks. Production learns from rehearsal, not from outages, and confidence rises with every rehearsed exception and graceful recovery.
Treat every action as repeatable and safe to rerun. Assign stable request IDs, check inventory versions, and prefer upserts to overwrites. When steps fail midstream, compensating moves restore balance: reverse a bin transfer, reissue a label, or requeue a task without double-picking.