What you are seeing: jitter spreads reconnects so gateways stay under capacity; the queue absorbs the spike and redelivers anything unacknowledged, so nothing is lost.every device loses its socket at once, then reconnects. Naive clients stampede the gateways past capacity, so handshakes get rejected and retried in waves; exponential backoff with jitter spreads them out so load stays under the line. Meanwhile the queue absorbs events for offline devices and redelivers anything unacknowledged, so nothing is lost.