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
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