Generate universally unique identifiers (UUID/GUID) quickly and securely
UUID v4 usa números aleatórios para gerar identificadores únicos
Máximo: 100 UUIDs
UUID (Universally Unique Identifier) é um identificador de 128 bits usado para identificar informações de forma única.
Formato: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
Uso comum: IDs de banco de dados, identificadores de sessão, chaves de objetos, etc.
UUID (Universally Unique IDentifier) or GUID (Globally Unique IDentifier) is a 128-bit unique identifier used to identify information in computer systems. The probability of duplication is so low that it's considered practically impossible.
UUID (Universally Unique IDentifier) or GUID (Globally Unique IDentifier) is a 128-bit unique identifier used to identify information in computer systems. The probability of duplication is so low that it's considered practically impossible.
UUIDs are perfect for primary keys in distributed databases, session identifiers, unique file names and API tokens. They can be generated without central coordination, making them ideal for distributed systems.
UUID v1 is based on timestamp and MAC address. v4 is completely random. v5 is based on SHA-1 hash of a namespace and name.
Yes! UUID and GUID are interchangeable terms. UUID is the standard term, while GUID is used mainly in Microsoft environments.
Theoretically yes, but the probability is so low (1 in 5.3×10³⁶ for UUID v4) that it's considered impossible in practice.