UUID v1 generator

UUID v1 is generated based on the current timestamp and node ID (usually MAC address). It contains time information at generation, ensuring global uniqueness under correct configuration.

UUID v1 is based on time and node ID, while v4 is completely random. v1 has better performance and lower collision probability, but may expose time and node information, v4 is more random but theoretically has collision possibility.

UUID v1 is suitable for scenarios requiring high performance, low collision probability, and orderliness, such as database primary keys, event sorting in distributed systems, etc. Not suitable for security-sensitive scenarios requiring hidden generation time.

UUID v1 generation speed is usually faster than v4, as it does not rely on cryptographically secure random number generators. When a large number of unique identifiers need to be generated, v1 may be a better choice.

UUID v1 contains time information, with natural temporal characteristics. This makes sorting by UUID roughly equivalent to sorting by generation time, beneficial for certain query and indexing operations.

UUID v1 may leak generation time and node information (such as MAC address). For security-sensitive applications, especially scenarios requiring hidden identity or time information, UUID v4 should be considered.