xid
xid is a globally unique id generator thought for the web (by rs)
ksuid
K-Sortable Globally Unique IDs (by segmentio)
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
xid
Posts with mentions or reviews of xid.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-12-02.
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The Easiest Way to Create a REST API With Go
The goal of babyapi is to be so easy that a baby could do it. As previously mentioned, babyapi.DefaultResource already implements the required interface, so it can be used as a starting point for simple resource types. Besides simply implementing the interface, this default struct implements some validations around the ID and uses rs/xid to create a unique identifer on new resources.
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Build a Job Queue with Rust Using Aide-De-Camp (Part 2)
To schedule a job, all we need to do is serialize the payload, create a new JID (we use XID for JIDs), and insert both into the adc_queue table.
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How we used Go 1.18 when designing our Identifiers
XID's are 96 bits. The first 32 bits are the time, which means we get our k-sorting immediately. The next 40 bits are a machine identifier and a process identifier. However, unlike the other systems, these are calculated automatically using the library and don't require us to configure anything ourselves. The final 24 bits are a sequence number, which allows a single process to generate 16,777,216 identifiers per second!
- Xid, globally unique id generator
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I need a unique ID sequence number generator, I know I could just use a small MySQL instance, but is there no other way?
Checkout xid https://github.com/rs/xid and how MongoDB does its id
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You Don't Need UUID
I've had success using xid for user-visible IDs. What's nice is they're shorter than UUID, will sort in order, hides the amount of rows in the table.
https://github.com/rs/xid
ksuid
Posts with mentions or reviews of ksuid.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-12-12.
- 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?
When comparing xid and ksuid you can also consider the following projects:
nanoid - A tiny and fast Go unique string generator
ulid - Universally Unique Lexicographically Sortable Identifier (ULID) in Python 3
ulid - Universally Unique Lexicographically Sortable Identifier (ULID) in Go
pg-ulid - ULID Functions for PostgreSQL
uuid - Go package for UUIDs based on RFC 4122 and DCE 1.1: Authentication and Security Services.
nanoid - A tiny (124 bytes), secure, URL-friendly, unique string ID generator for JavaScript
gouid - Fast, dependable universally unique ids
ulid-mssql - Implementation of ULID generator For Microsoft SQL Server
sno - Compact, sortable and fast unique IDs with embedded metadata.
python-ksuid - A pure-Python KSUID implementation
goflake - A highly scalable and serverless unique ID generator for use in distributed systems. Written in GoLang. Inspired by Twitters Snowflake.
uuid7 - UUID version 7, which are time-sortable (following the Peabody RFC4122 draft)