snowid is a Go package that provides

• A very simple Twitter snowflake generator.
• Methods to parse existing snowflake IDs.
• Methods to convert a snowflake ID into several other data types and back.
• JSON Marshal/Unmarshal functions to easily use snowflake IDs within a JSON API.
• Monotonic Clock calculations protect from clock drift.

By default, the ID format follows the original Twitter snowflake format.

• The ID as a whole is a 63 bit integer stored in an int64
• 41 bits are used to store a timestamp with millisecond precision, using a custom epoch.
• 10 bits are used to store a node id - a range from 0 through 1023.
• 12 bits are used to store a sequence number - a range from 0 through 4095.