When Nobody Knows a Config File Changed, Incident Review Loses a Critical Piece of Evidence
Release owner Xiao Zhou is the one who gets stuck in the review meeting.
The interface timeout happens more than ten minutes after release. There is a monitoring curve, there are error logs, and the dependency path from the application to the database can also be found. All the materials seem to point in the same direction: unstable connections.
Then the business interface owner asks one question: "Was the connection pool configuration just adjusted before the incident?"
The room goes quiet for a few seconds.
Some people look through release records. Some scroll through group chat messages. Some log into the machine to inspect the current file. But the current file can only prove what it looks like now, not what it looked like then. What really blocks the review is not that nobody checked the logs. It is that nobody can produce the config file versions and diffs from before and after the incident.
The most dangerous thing in a review is not too few clues. It is when the clues suddenly break at the configuration layer.