Why /Dev/Null Is an Acid Compliant Database

Summary

August 22, 2025 at 2 a.m. / Why /dev/null Is an ACID Compliant Database /dev/null is web scale Atomicity Operations are "all or nothing." Anything you write to /dev/null disappears entirely. There's no partial write problem: it’s either written (and discarded) or not written at all. ✅ Consistency The system transitions from one valid state to another. /dev/null always stays in a consistent state (empty). No matter what you write, the invariant "file contains nothing" always holds. ✅ Isolation Concurrent transactions don’t interfere with each other. Multiple processes can write to /dev/null at the same time, and their outputs never conflict, because nothing is ever stored. ✅ Durability Once a transaction is committed, it remains so, even after crashes. /dev/null "durably" commits your data into nothingness. After a crash or reboot, it still contains exactly what it always has: nothing. ✅ There is only 1 small problem though, it only comes with 0b of free storage. For more space, you will have to contact entreprise sales, which is actually just me!