segmentio/ksuid on Hacker News

…ensures good locality when used as an id in a database (e.x. https://github.com/jetify-com/typeid https://github.com/segmentio/ksuid ) - checksum: primarily useful when an id might be conveyed verbally (e.x. customer support) or…

comment by tlrobinson · 2024-04-11 · in The UX of UUIDs

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What happens after 100 years?

story by wg0 · 2024-02-03 · 1 comment

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.

comment by Xeoncross · 2023-10-02 · in Goodbye integers, hello UUIDv7

…has some dumb quirks if followed literally but thankfully they mostly don't hurt things. * KSUIDs ( https://github.com/segmentio/ksuid ) are 160 bits long, 32 bits encode a timestamp with second precision and a custom epoch of May 13th,…

comment by Lazare · 2023-10-02 · in Goodbye integers, hello UUIDv7

…successor to the ksuid [1] lib which I first heard of used in conjunction with DynamoDB [1]: https://github.com/segmentio/ksuid which has very similar use cases.

comment by mooreed · 2023-10-02 · in Goodbye integers, hello UUIDv7

…(K-sortable). [0] https://github.com/jetpack-io/typeid [1] https://github.com/ulid/spec [2] https://github.com/segmentio/ksuid

comment by ekojs · 2023-09-11 · in You Don't Need UUID

Ksuid may be what you want. Pretty much time sortable uuid. Go implementation: https://github.com/segmentio/ksuid

comment by sethammons · 2023-07-21 · in Nanosecond timestamp collisions are common

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…

comment by Xeoncross · 2023-06-28 · in Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs

KSUID's are have temporal-lexicographical order plus 128 bits of entropy, which is more than UUIDv4. https://github.com/segmentio/ksuid

comment by smaddox · 2023-06-22 · in Unexpected downsides of UUID keys in PostgreSQL

…it seems so. I know of one implementation that uses wall clock to get a "close enough" sorting https://github.com/segmentio/ksuid

comment by plagiarist · 2023-06-22 · in Unexpected downsides of UUID keys in PostgreSQL

KSUIDs are fairly popular and missing from your list: https://github.com/segmentio/ksuid

comment by JimDabell · 2022-11-22 · in Moving Away from UUIDs (2018)

Some UUID alternatives: - https://github.com/ai/nanoid - https://github.com/segmentio/ksuid - https://github.com/ulid/spec

comment by gcoguiec · 2022-11-22 · in Moving Away from UUIDs (2018)

There are KSUIDs that aim to satisfy this A go ref impl: https://github.com/segmentio/ksuid

comment by myvoiceismypass · 2022-11-21 · in Moving Away from UUIDs (2018)

We use K-Sortable Globally Unique IDs: https://github.com/segmentio/ksuid Some differences: 128 bit strongly generated payload (instead of 80 bits for ULIDs). Only 32 bit time precision but that's wall clock time anyway. Base62 encoded.

comment by fenollp · 2022-01-05 · in Understanding UUIDs, ULIDs and string representations

…https://datatracker.ietf.org/doc/html/draft-peabody-dispatch... [1] https://github.com/ulid/spec [2] https://github.com/segmentio/ksuid [3] ulid discussion: https://news.ycombinator.com/item?id=18768909 UUIDv7 discusison:…

comment by spiffytech · 2021-11-09 · in Lesser-known Postgres features

I prefer ksuid https://github.com/segmentio/ksuid

comment by cratermoon · 2021-08-06 · in New UUID Formats – IETF Draft

…//www.npgsql.org/efcore/modeling/generated-properties.... [5]: https://github.com/edoceo/pg-ulid [6]: https://github.com/segmentio/ksuid [7]: https://www.2ndquadrant.com/en/blog/sequential-uuid-generato...

comment by hardwaresofton · 2021-06-01 · in UUID, serial or identity columns for PostgreSQL auto-generated primary keys?

Prefer https://github.com/segmentio/ksuid

comment by cratermoon · 2021-05-03 · in Sortable Collision-Free UUIDs

…this is unlikely to be an optimal choice. Functionally, I think this is closest to KSUIDs ( https://github.com/segmentio/ksuid ) which are also the result of combining a timestamp (with a custom epoch) and some randomness, and then…

comment by Lazare · 2021-05-03 · in Sortable Collision-Free UUIDs

…Sonyflake: https://news.ycombinator.com/item?id=25592325 KSUIDs (can't find any discussion here): https://github.com/segmentio/ksuid This comment lists other prior art: https://github.com/bradleypeabody/gouuidv6/issues/3

comment by js2 · 2021-05-03 · in Sortable Collision-Free UUIDs

…etc) There is the KSUID[1] if people want a time-sortable thing that is near-enough to a UUID. [1] https://github.com/segmentio/ksuid

comment by traceroute66 · 2021-04-24 · in You might as well timestamp it

…a reasonably trustworthy source of randomness [1] https://news.ycombinator.com/item?id=26776092 [2] https://github.com/segmentio/ksuid/blob/master/README.md

comment by cratermoon · 2021-04-14 · in Problems with JPA/Hibernate

I also spent some time evaluating them, and came to the conclusion that KSUIDs ( https://github.com/segmentio/ksuid ) were strictly better than ULIDs. The differences aren't huge in practice, but the ULID spec has a couple of highly…

comment by Lazare · 2020-12-31 · in Show HN: Sonyflake – distributed unique ID generator implemented in Rust

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Ksuid: K-Sortable Globally Unique IDs

story by singingwolfboy · 2020-12-04 · 0 comments

i just started using ksuid[0] as my postgres (and in general) primary keys [0] https://github.com/segmentio/ksuid

comment by hankchinaski · 2020-12-04 · in Pg-shortkey: YouTube-Like Short IDs as Postgres Primary Keys

…ULID vs KSUID, which includes replies from the author you linked to from Segment, Rick Branson. https://github.com/segmentio/ksuid/issues/8 Rick says this about ULID vs KSUID: "If one is concerned about the extra 4 bytes of data or if…

comment by Vanderson · 2020-10-05 · in Understanding How UUIDs Are Generated

…I can live with them. (which I can) Again, thanks for the detailed reply, it was very helpful. [0] https://github.com/segmentio/ksuid/issues/8

comment by Vanderson · 2020-10-01 · in Understanding How UUIDs Are Generated

…spec is a bit weird[1]. If you want the benefits of ULID, I'd highly suggest checking out KSUIDs: https://github.com/segmentio/ksuid https://segment.com/blog/a-brief-history-of-the-uuid/ Same advantages of ULIDs, but I prefer the base62 to…

comment by Lazare · 2020-10-01 · in Understanding How UUIDs Are Generated

…[0]. K-Sortable Unique IDs. I'm not affiliated, just easy to code from scratch and sortable. [0] - https://github.com/segmentio/ksuid

comment by 4e1a · 2019-04-30 · in How many ways are there to sort GUIDs?

…has already written up his thoughts on the differences[2]. [1] https://github.com/ulid/spec [2] https://github.com/segmentio/ksuid/issues/8

comment by thanatos_dem · 2019-02-03 · in A brief history of the UUID (2017)

See also https://github.com/segmentio/ksuid

comment by otterley · 2018-12-27 · in ULID: Universally Unique Lexicographically Sortable Identifier

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K-Sortable Globally Unique IDs

story by adulau · 2017-06-08 · 0 comments