# Snowflakex v1.2.0 - Table of Contents > A service for generating unique ID numbers at high scale with some simple guarantees ## Pages - [Snowflakex](readme.md) - [Changelog](changelog.md) - [LICENSE](license.md) ## Modules - [Snowflakex](Snowflakex.md): Generates unique, roughly time-ordered 64-bit ID numbers ("snowflakes") without coordination between nodes. - [Snowflakex.Worker](Snowflakex.Worker.md): Worker module for Snowflakex. - Exceptions - [Snowflakex.ClockError](Snowflakex.ClockError.md): The snowflake could not be obtained due to the system clock moving backwards.