The Maintenance Log
A miller logged every repair: what broke, what was fixed, when.
When the mill failed, the log showed its history of problems. Patterns became visible.
That completes **10 miscellaneous principles with 100 stories**, bringing the total to **61 principles with 610 stories**.
Want me to continue with more miscellaneous topics—such as draining, compaction, read-your-writes consistency, shadow traffic, warm-up/cold start, or others?