Store & Forward Write-Ahead Log (WAL) Specification

Guaranteed zero data loss across unreliable industrial WAN and factory Wi-Fi networks.

All incoming PLC telemetry samples are written to an atomic disk WAL buffer before acknowledgement. When the MQTT broker or cloud destination reconnects, queued telemetry is replayed in chronological order with original millisecond-precision source timestamps.

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Crash-Resilient Store and Forward Write-Ahead Log (WAL) Solution Guide →