In software engineering and data management, having a truly unique identifier is essential to prevent data collisions and sync errors. A Universally Unique Identifier (UUID), also known as a GUID, is a 128-bit label used for information in computer systems. Because they have a massive number of possible combinations, you can generate them independently without a central authority and still be confident that no two IDs will ever be the same.
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工作原理
The generator follows the RFC 4122 standard, creating a 36-character string (including hyphens) consisting of hexadecimal digits, with specific bits set to indicate Version 4 and the correct variant.