Comments (3)
cowtowncoder
commented on July 26, 2024
@nagamanikandank I don't understand -- timestamp is generated from the current timestamp, but it has to avoid duplicates, as well as translate from milliseconds of current time to 100 nsec (or whatever granularity is as specified by UUID spec), it gets translated to complaint value.
So what exactly is your problem? Timestamp in UUID is not meant to be used for knowing current time but merely for providing uniqueness and potentially loose ordering within values produced by a single host.
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nagamanikandank
commented on July 26, 2024
@cowtowncoder . I am not very clear in the way I wrote the question I think. Sorry. My Question is , does Generators.timeBasedGenerator().generate() , use the current time to generate UUID, or some random time to generate the Id
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cowtowncoder
commented on July 26, 2024
@nagamanikandank It uses current time to generate time/location-based UUID (one produced by timeBasedGenerator()).
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Related Issues (20)
- `UUIDUtil.extractTimestamp()` is broken for versions 1 and 6 HOT 1
- Update About section of the repo HOT 1
- Add `Main-Class` manifest to make jar invoke `Jug` class HOT 1
- Add constants for "Nil UUID", "Max UUID" (from draft "new UUID" spec) in `UUIDUtil`
- H HOT 1
- Microsecond / nanosecond part of time based uuid set even if UUIDClock is millisecond precision HOT 2
- Release with UUID v7 support? HOT 5
- Enable "Reproducible Build"
- Ensure correct distinction between variant and version in documentation HOT 2
- UUID version 7 implementation sorting incorrect? HOT 11
- Type 1 UUID getTimestamp() synchronization leads to performance bottleneck HOT 5
- Add `Generators.defaultTimeBasedGenerator()` to use "default" interface address for time/based UUIDs
- TimeBasedEpochGenerator (UUIDv7) can't be provided a `UUIDClock` HOT 5
- Confusing comment wrt synchronization HOT 3
- Add `UUIDUtil.extractTimestamp()` for extracting 64-bit timestamp for all timestamp-based versions HOT 5
- Guidance on how to handle IllegalStateException from TimeBasedEpochGenerator HOT 5
- Add code coverage reporting HOT 1
- Need more testing to increase code coverage (at least to 50%) HOT 7
- What is a valid UUID HOT 5
- Extract date time from UUID V7 HOT 7
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