9 lines
681 B
Plaintext
9 lines
681 B
Plaintext
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== Why is this an issue?
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Using temporal types as the primary key of a table is risky.
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When these types are used as primary keys, it usually means that each new key is created with the use of `.Now` or `.UtcNow` properties from `DateTime` and `DateTimeOffset` classes.
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In those cases, duplicate keys exceptions may occur in many ways:
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* when entries are added consecutively by a machine with low-enough system clock resolution;
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* when two different threads are inserting entries in close enough sequence for both to have the same time;
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* when changes such as daylight saving time (DST) transitions occur, where values can be repeated the following hour (only for `DateTime` type);
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