[WIP] GOID

goid is a Go library that provides implementations for ULID and various UUID versions, including UUID v1, v2, v3, v4, v5, v6, and v7.

Features

• ULID: Universally Unique Lexicographically Sortable Identifier. consists of 26 characters, which includes:
  • A 48-bit timestamp (milliseconds since Unix epoch).
  • A 80-bit random component.
• UUID v1: Time-based UUID. Combines the current timestamp with the MAC address of the generating machine:
  • 60 bits for timestamp
  • 48 bits for MAC address
  • 14 bits for a sequence number.
• UUID v2: DCE Security UUID. Similar to v1 but includes a local domain identifier (e.g., POSIX UID/GID).
• UUID v3: Name-based UUID using MD5:
  • Generated from a namespace identifier and a name using the MD5 hashing algorithm.
  • Deterministic: the same input will always produce the same UUID.
• UUID v4: Random UUID.
  • Generated using random numbers.
  • Most commonly used due to its simplicity and randomness.
• UUID v5: Name-based UUID using SHA-1.
  • Similar to v3 but uses SHA-1 instead of MD5 for hashing.
  • Also deterministic.
• UUID v6: Time-based UUID (reordered).
  • A variant of v1 that reorders the timestamp to improve sorting.
• UUID v7: Time-based UUID (Unix epoch).
  • A new version that uses a Unix timestamp in milliseconds and random bits.
  • Designed for better performance and sorting.

Installation

To install the goid library, use the following command:

go get github.com/fajarnugraha37/goid

Usage

Generating a ULID

Generating a UUID v1

Generating a UUID v2

Generating a UUID v3

Generating a UUID v4

Generating a UUID v5

Generating a UUID v6

Generating a UUID v7

Contributing

Contributions are welcome! If you have suggestions or improvements, feel free to open an issue or submit a pull request.

License

This project is licensed under the MIT License. See the LICENSE file for details.