rust-ksuid
ksuid
| rust-ksuid | ksuid | |
|---|---|---|
| 5 | 38 | |
| 84 | 4,691 | |
| - | 1.0% | |
| 4.0 | 3.1 | |
| 2 months ago | 7 months ago | |
| Rust | Go | |
| MIT License | MIT License |
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rust-ksuid
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Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs
We maintain a couple of popular ksuid libraries[1][2] and use it, so we definitely like ksuid. Though one big issue with ksuid is that being 160bit means that it doesn't fit into native uuid types in databases (e.g. postgres), which means that they come with a performance penalty.
1: https://github.com/svix/rust-ksuid
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Show HN: A Pure Rust Ksuid Implementation
I wasn't going to post it here because it feels a bit small for a show HN, but then I figured: why not. :)
It's a pure Rust implementation of Segement's KSUID, and I created this library while working on Svix[0].
I haven't written any Rust for a while, so even though I have written quite a bit of Rust code in the past (see Etebase[1]), I'm a bit rusty (no pun intended).
Anyhow, I just wanted to share, and I'm hoping to get some feedback if you have any. :)
Code and examples: https://github.com/svix/rust-ksuid/
P.S, the package is tested for compatibility against the reference Go implementation.
[0] https://www.svix.com
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Show r/rust: a pure Rust KSUID implementation
Code and examples: https://github.com/svix/rust-ksuid/
ksuid
- What happens after 100 years?
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Zero Downtime Postgres Upgrades
OP here - we avoid sequences in all but one part of our application due to a dependency. We use [KSUIDs][1] and UUID v4 in various places. This one "gotcha" applies to any sequence, so it's worth calling out as general advice when running a migration like this.
[1]: https://segment.com/blog/a-brief-history-of-the-uuid/
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Bye Sequence, Hello UUIDv7
UUID v4 isn't large enough to prevent collisions, that is why segment.io created https://github.com/segmentio/ksuid which is 160bit vs the 128bit of a UUIDv4.
- You Don't Need UUID
- A Brief History of the UUID
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Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs
Assuming you don't need to use UUIDv7 (or any UUID's) then https://github.com/segmentio/ksuid provides a much bigger keyspace. You could just append a string prefix if you wanted to namespace, but the chance of collisions of a KSUID is many times smaller than a UUID of any version.
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Unexpected downsides of UUID keys in PostgreSQL
KSUID's are have temporal-lexicographical order plus 128 bits of entropy, which is more than UUIDv4.
https://github.com/segmentio/ksuid
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UUIDs are so much better than autoincrementing ids and it's not even close
That's why you use ksuid (https://segment.com/blog/a-brief-history-of-the-uuid/) or, if you're willing to go with a draft spec you could go with the new UUID formats https://www.ietf.org/archive/id/draft-ietf-uuidrev-rfc4122bi...
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What Happened to UUIDv2?
Interesting in more history of UUIDs? Twilio Segment's blog has an amazing history lesson about how they came to be.
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Which UUID package do you use? and why?
I use the ksuid from segment. https://github.com/segmentio/ksuid
What are some alternatives?
typeid - Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs
ulid - Universally Unique Lexicographically Sortable Identifier (ULID) in Python 3
afid
pg-ulid - ULID Functions for PostgreSQL
resource-id - Developer-friendly k-sortable IDs
nanoid - A tiny (124 bytes), secure, URL-friendly, unique string ID generator for JavaScript
js-id - ID generation for JavaScript & TypeScript Applications
ulid-mssql - Implementation of ULID generator For Microsoft SQL Server
typeid-go - Go implementation of TypeIDs: type-safe, K-sortable, and globally unique identifiers inspired by Stripe IDs
python-ksuid - A pure-Python KSUID implementation
typeid-sql - SQL implementation TypeIDs: type-safe, K-sortable, and globally unique identifiers inspired by Stripe IDs
uuid7 - UUID version 7, which are time-sortable (following the Peabody RFC4122 draft)