PCpcthrowaway·Jun 13, 2022
CUID might be a good alternative if you need something sortable over time: https://github.com/ericelliott/cuid
It's mentioned in this IETF draft, but I don't see the analysis made available
In New UUID Formatsparalleldrive
cuid
JavaScript2018–2022
paralleldrive / cuid
cuid
Deprecated collision-resistant id spec. Insecure because it leaks timestamps. Use cuid2 instead.
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10Mentions
0Explicit recommenders
3.5KGitHub stars
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What it is
Deprecated collision-resistant id spec. Insecure because it leaks timestamps. Use cuid2 instead.
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Where it is used
No documented product use has been verified yet.
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HN mentions by year10 dated mentions
Observed mentions: 2018-12-28 00:00:04 UTC to 2022-06-13 12:22:39 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 5 | 1 | 4 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 2 | 0 | 2 |
What Hacker News says
10 sourcesSome details on how CUIDs work: https://github.com/ericelliott/cuid
In Understanding UUIDs, ULIDs and string representationsCUIDs are a good distributed (locally generated) solution.
https://github.com/ericelliott/cuid
In Generating unique IDs in a distributed environment at high scaleWould you recommend this over https://github.com/ericelliott/cuid ? I use cuid with Postgres and it’s worked out great.
In UUID, serial or identity columns for PostgreSQL auto-generated primary keys?There is also CUID:
https://github.com/ericelliott/cuid
In UUID, serial or identity columns for PostgreSQL auto-generated primary keys?Collision-resistant ids optimized for horizontal scaling and performance
2 points · Open discussionHow does it compare to cuid [1]? If you know the differences, can you please explain them for those like me who do not know both?
[1] https://github.com/ericelliott/cuid
In Things you should do now (2011)I hadn't heard about CUIDs, but based on the Github repo [1], I see they fall into two of the categories I presented:
- A large range. It looks like CUIDs support a short version, but the README calls out the short version should only be used for disambiguation, and are "absolutely not recommended for database unique IDs".
- Encode the partition in the ID. In this case, the partition is either based on the browser or the process ID of the server.
Cool stuff, thanks for pointing it out!
[1] https://github.com/ericelliott/cuid
In Scalability concepts: distributed ID generationNode-cuid .vs. node-UUID comparison
2 points · Open discussioncuid removes more of the randomness adds a counter and a fingerprint:
https://github.com/ericelliott/cuid
The default id in MongoDB does about the same. I always thought the MongoDB identifiers worked well for a lot of use cases.
Its also worth mentioning that integer incrementing ids can scale just fine if you reserve them in large blocks and they are no longer guaranteed to match insertion order, e.g: https://github.com/pingcap/docs/blob/master/sql/mysql-compat...
In ULID: Universally Unique Lexicographically Sortable Identifier