Unique

Unique aims to create a Twitter Snowflake like identifier.

The result is a signed 64 bit long broken down as follows

• bit 64 - Sign just like in java

• bit 63-23 - Timestamp in milliseconds utilizing same arbitrary EPOCH.

• bit 22-19 - 4 bits of Data Center ID

• bit 18-13 - 6 bits of Server ID

• bit 12-1 - 12 bits Incrementing sequence

Care must be taken to ensure the server has accurate time (ntp).

Separate instances must use different datacenter/server id combinations. Assignment and coordination is on you.