Eleven flags in a config array, changed by deploying, and two of them dead since 2021. The persistence is what a config flag cannot give you: a percentage…
An encrypted backup is a backup you cannot restore unless the key is somewhere the restore procedure can reach. Encryption at rest is right and it introduces a…
The policy said a burnt budget triggers a deploy freeze; the budget was burnt by one incident and the freeze would have blocked the fix. A freeze assumes…
Four years of nightly backups, never restored, and the first restore produced a database missing one table. The exclusion was reasonable when it was added and became wrong…
A deploy that changed a serialised shape needed every cached entry invalidated, and the tool for that had been FLUSHDB. Flushing invalidates everything, including the ninety per cent…
Upgrading forced a read of a configuration file that had been copied forward through three servers and four PHP versions. The cipher list is the line worth deleting…
Updating four million rows in one statement holds a transaction open long enough for the replica to fall twenty minutes behind. The sleep is not politeness, it is…