That is, what I wanted to point out.
"NoSQL? Kirby Prefers NoDB!
Kirby is file-based – No database involved. This means first class performance,
version controllable content, simple backups and many other awesome sideeffects."
What other "awesome" sideeffects? I tried the link and found only a download page. I also scanned threw the documentation and found no further statements and no explanation.