❓ What is UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across both space and time. UUIDs are commonly used as database keys, session identifiers, and unique identifiers in distributed systems.
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Example: 550e8400-e29b-41d4-a716-446655440000