uuid6-ietf-draft
uuid7
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7 | 3 | |
182 | 68 | |
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5.7 | 0.0 | |
6 months ago | 4 months ago | |
HTML | Python | |
- | MIT License |
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uuid6-ietf-draft
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The UX of UUIDs
https://github.com/uuid6/uuid6-ietf-draft/issues/27
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This is very cool! I love this solution for ID’s what do you all think?
Why not UUIDv7?
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UUIDs Are Bad for Database Index Performance, enter UUID7!
What if a new UUID version could be designed that would take the randomness of UUID4 and combine it with a timestamp prefix? This would make the UUID increase overall, but not locally – due to the random postfix. The random part ensures uniqueness when a high generation rate is necessary and also makes the UUIDs hard to predict – it’s not possible to guess the previous, or next UUID. It’s fairly simple to devise a custom UUID scheme, but fortunately, there is a new Internet-Draft (at the time of writing) defining new pseudo-sequential UUID versions that aim to solve exactly this issue: draft-peabody-dispatch-new-uuid-format-04. The current state and progress can be viewed at IETF Datatracker.
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Understanding UUIDs, ULIDs and String Representations
Brad Peabody did the original -00 draft, which was discussed as an FYI at an IEFT meeting in March 2020. See [1], around 50 lines from the bottom.
Kyzer Davis has since submitted two further revisions -01 and -02 in April and October 2021. See history in [2].
The current -02 draft is due to expire in April 2022. Presumably Kyzer Davis will try to get it discussed before then.
The GitHub repo tracking these drafts is https://github.com/uuid6/uuid6-ietf-draft/.
[1] https://datatracker.ietf.org/meeting/107/materials/minutes-1...
[2] https://datatracker.ietf.org/doc/draft-peabody-dispatch-new-...
- UUID version 7. It's binary sortable and has many other advantages. Created specifically for modern distributed systems. IETF draft is published, they mid tweaking before publishing v3 draft.
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New UUID Formats – IETF Draft
At the moment anyway, that XML link won't render per an XML parsing error. For anyone who wants a quick look at what these XML docs look like here's one for UUID6 [0].
[0] https://github.com/uuid6/uuid6-ietf-draft/blob/master/draft-...
uuid7
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Sequential UUID in snowflake
Snowflake does not support UUID 7. What you could do is import UUID7 Python module and implement a Python UDF.
- New UUID Formats from IETF
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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?
Ulid - Fast .NET C# Implementation of ULID for .NET and Unity.
uuid7-csharp - UUIDv7 for C#. Time-ordered UUIDs with up to 50ns resolution and 48 bits of randomness.
spec - The canonical spec for ulid
ksuid - K-Sortable Globally Unique IDs
ulid-mssql - Implementation of ULID generator For Microsoft SQL Server
Hashids.java - Hashids algorithm v1.0.0 implementation in Java
dart-uuid - Generate RFC4122(v1,v4,v5,v6,v7,v8) UUIDs
uulid.go - ULID-UUID compatibility library for generating and parsing ULIDs.
ulid - Universally Unique Lexicographically Sortable Identifier (ULID) in Python 3
shortuuid.rb - Convert UUIDs & numbers into space efficient and URL-safe Base62 strings, or any other alphabet.
tiny_id - Rust library for generating non-sequential, tightly-packed short IDs.