3 ms·

So you're relying on the implicit write barrier many filesystems supply that ensures that the contents of a file hit the disk before a renaming of that file doe

So you're relying on the implicit write barrier many filesystems supply that ensures that the contents of a file hit the disk before a renaming of that file does. That's adequate, but I'd personally checksum the file instead of relying on corruption causing JSON to become structurally invalid.

Yoric 10y ago
Well, it's better when this write barrier happens (which is not true on ext4, iirc), but we rely mostly on the the fact that operating systems flush automatically within 20 seconds (I don't remember the actual numbers, but I'm almost sure it's actually within at most 5 second in practice). Checksums/signatures would be more precise, indeed.