# segmentio/ksuid

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5,260 stars · 195 forks · Go · MIT

## Links

- GitHub: https://github.com/segmentio/ksuid
- Homepage: https://segment.com/blog/a-brief-history-of-the-uuid/
- awesome-repositories: https://awesome-repositories.com/repository/segmentio-ksuid.md

## Topics

`coordination` `go` `golang` `ksuid` `unique-id` `uuid`

## Description

ksuid is a Go implementation of k-sortable unique identifiers. It provides a system for generating globally unique identifiers that maintain a natural chronological order based on their generation timestamp.

The project enables the creation of unique keys across distributed systems without a central coordinator. These identifiers are designed for use as database primary keys to maintain index performance and insert efficiency.

The library includes capabilities for identifier serialization and parsing, allowing conversion between binary, text, and SQL formats. It also provides command-line tools for generating and decoding identifiers without requiring application code.

## Tags

### Part of an Awesome List

- [Unique Identifiers](https://awesome-repositories.com/f/awesome-lists/data/unique-identifiers.md) — Implements a system for generating globally unique identifiers that maintain a strict natural chronological order. ([source](https://segment.com/blog/a-brief-history-of-the-uuid/))
- [Unique ID Generation](https://awesome-repositories.com/f/awesome-lists/devtools/unique-id-generation.md) — K-Sortable unique ID generator.

### Data & Databases

- [Unique Identifier Generators](https://awesome-repositories.com/f/data-databases/data-management/unique-identifier-generators.md) — Generates globally unique identifiers designed for consistency across distributed systems.
- [Distributed Primary Key Generation](https://awesome-repositories.com/f/data-databases/entity-modeling/primary-keys/distributed-primary-key-generation.md) — Optimizes SQL database performance by using time-ordered identifiers as primary keys.
- [Unique Identifier Generators](https://awesome-repositories.com/f/data-databases/unique-identifier-generators.md) — Produces unique identifiers incorporating timestamps to ensure natural sorting by creation time. ([source](https://cdn.jsdelivr.net/gh/segmentio/ksuid@master/README.md))
- [Identifier Analysis Tools](https://awesome-repositories.com/f/data-databases/content-addressable-storage/identifier-analysis-tools.md) — Provides a command-line interface for decoding and analyzing identifiers into their internal components. ([source](https://cdn.jsdelivr.net/gh/segmentio/ksuid@master/README.md))
- [Distributed Identifier Generators](https://awesome-repositories.com/f/data-databases/data-management/unique-identifier-generators/distributed-identifier-generators.md) — Ships a command-line tool for generating distributed-safe unique identifiers without requiring code. ([source](https://segment.com/blog/a-brief-history-of-the-uuid/))
- [Identifier Parsers](https://awesome-repositories.com/f/data-databases/data-management/unique-identifier-generators/identifier-parsers.md) — Converts string representations of identifiers back into structured components for detailed inspection. ([source](https://segment.com/blog/a-brief-history-of-the-uuid/))
- [Identifier Serializers](https://awesome-repositories.com/f/data-databases/data-management/unique-identifier-generators/identifier-serializers.md) — Transforms structured identifiers into binary or text formats for consistent storage and transmission. ([source](https://cdn.jsdelivr.net/gh/segmentio/ksuid@master/README.md))
- [Data Serialization and Parsing](https://awesome-repositories.com/f/data-databases/data-serialization-and-parsing.md) — Converts unique identifiers between binary and text formats for efficient cross-platform retrieval.

### Security & Cryptography

- [Cryptographic Random Number Generators](https://awesome-repositories.com/f/security-cryptography/cryptographic-random-number-generators.md) — Uses cryptographically secure random numbers to ensure identifier uniqueness across distributed generators.

### Software Engineering & Architecture

- [Chronological ID Sequencing](https://awesome-repositories.com/f/software-engineering-architecture/causal-ordering-timestamps/chronological-id-sequencing.md) — Ensures identifiers are naturally sortable by time for efficient database queries and data ordering.
- [Distributed Identification Systems](https://awesome-repositories.com/f/software-engineering-architecture/distributed-identification-systems.md) — Generates globally unique keys across multiple servers without requiring a central coordinator.
- [K-Sortable Identifier Implementations](https://awesome-repositories.com/f/software-engineering-architecture/k-sortable-identifier-implementations.md) — Provides a concrete Go implementation of the k-sortable unique identifier standard.
- [Chronological Binary Layouts](https://awesome-repositories.com/f/software-engineering-architecture/operation-timestamping/chronological-binary-layouts.md) — Places a high-resolution timestamp at the start of the binary sequence to ensure natural chronological sorting.
- [Time-Sorted Identifier Libraries](https://awesome-repositories.com/f/software-engineering-architecture/time-sorted-identifier-libraries.md) — Provides a comprehensive set of tools to generate, parse, and serialize unique IDs for consistent database sorting.
- [SQL Binary Mappings](https://awesome-repositories.com/f/software-engineering-architecture/bi-directional-specification-serialization/binary-to-text-serialization/sql-binary-mappings.md) — Provides direct binary-to-SQL serialization to preserve sorting and minimize database storage overhead.
- [Fixed-Width Binary Representations](https://awesome-repositories.com/f/software-engineering-architecture/fixed-width-binary-representations.md) — Uses a constant number of bytes for every identifier to enable efficient storage and fast indexing.
- [Structural Identifier Parsing](https://awesome-repositories.com/f/software-engineering-architecture/naming-conventions/rule-based-string-parsing/structural-identifier-parsing.md) — Deconstructs serialized identifiers back into their original timestamp and payload components for analysis.