Synchronize clocks with resilient NTP and verify skew continuously. Capture source and arrival times, recording precision and drift. Use event correlation to detect sudden jumps. When auditors ask how a decision was timed, you show irrefutable evidence, and operators know that every chart respects the true order in which the factory actually lived each minute.
Design for the bad day. Enable local caching, idempotent writes, and exactly-once semantics where practical, or at least detectable duplicates with safe compaction. Simulate link cuts regularly. Confidence during failures keeps dashboards honest, avoids frantic guesswork, and ensures catch-up processing restores continuity without hiding defects or faking green lights no one should trust.