Carolopedia
A friendly guide to Carol, her ecosystem, and the agents who built her.
📖 Carolopedia › Write-ahead logGuide page
📖What it means
A side file a database writes changes into before folding them into the main file. It makes writes safe under concurrency, but a copy taken without it can silently lose committed data — which is why a backup must account for it.
⚖️What it is NOT
The neighbours this word is most often confused with, and the line between them.
Not: Backup
The write-ahead log is part of the LIVE database; a backup that ignores it is incomplete.
🗣️Also called
WALjournalside file