gubbins
uuid7-csharp
| gubbins | uuid7-csharp | |
|---|---|---|
| 1 | 2 | |
| 0 | 39 | |
| - | - | |
| - | 0.0 | |
| almost 3 years ago | 11 months ago | |
| Python | C# | |
| MIT License | - |
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gubbins
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Understanding and avoiding visually ambiguous characters in IDs
A few years ago, I created a system that generates a serial number from a prefix and a 32-bit unsigned integer and fixes up this kind of input error when passing the serial.
https://github.com/pallas/gubbins
uuid7-csharp
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Understanding and avoiding visually ambiguous characters in IDs
3. IDs don't use L and O because those can be confused for other characters
I've found it very handy in my travels.
[1] https://github.com/stevesimmons/uuid7-csharp?tab=readme-ov-f...
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Understanding UUIDs, ULIDs and String Representations
To summarise the differences:
* UUIDv6 - sortable, with a layout matching UUIDv1 for backward compatibility, except the time chunks have been reordered so the uuid sorts chronologically
* UUIDv7 - sortable, based on nanoseconds since the Unix epoch. Simpler layout than UUIDv6 and more flexibility about the number of bits allocated to the time part versus sequence and randomness. The nice aspect here is the uuids sort chronologically even when created by systems using different numbers of time bits.
* UUIDv8 - more flexibility for layout. Should only be used if UUIDv6/7 aren't suitable. Which of course makes them specific to that one application which knows how to encode/decode them.
UUIDv7 is thus the better choice in general.
(I recently wrote Python and C# implementations - https://github.com/stevesimmons/uuid7 and https://github.com/stevesimmons/uuid7-csharp)
What are some alternatives?
uuid7 - UUID version 7, which are time-sortable (following the Peabody RFC4122 draft)
ksuid - K-Sortable Globally Unique IDs
tiny_id - Rust library for generating non-sequential, tightly-packed short IDs.