ULID guarantees monotonicity only per process, and it requires ID generation to be serialized. I find the promise quite misleading because of that. You might as

ULID guarantees monotonicity only per process, and it requires ID generation to be serialized. I find the promise quite misleading because of that. You might as well use a wide-enough integer with the current timestamp + random as baseline for the same purpose, but I wouldn't recommend that either.