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by DanielStraight
4142 days ago
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The ID consists of a timestamp to millisecond precision and a random value. Since the timestamp only offers millisecond precision, two IDs generated in the same millisecond could be out of order depending on the random value because the timestamps will be the same. In order to prevent that, if two IDs are generated in the same millisecond, instead of generating a new random value, they take the random value from last time and add 1. This ensures that even though the timestamp of the second ID is the same as the first one, it will sort after the first one. |
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