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A UUID (Universally Unique Identifier) is a 128-bit number used to identify information in computer systems. Ideally, a UUID is globally unique, meaning no two generated UUIDs should ever be the same.
QodeCat generates Version 4 UUIDs, which are based on random numbers. This is the most common format used in modern web applications, databases (PostgreSQL, MongoDB), and software development.
Yes. Version 4 UUIDs have 122 random bits. The probability of a collision (generating the same UUID twice) is so astronomically low that it is effectively zero for all practical purposes.
They are essentially the same thing. UUID stands for Universally Unique Identifier, while GUID (Globally Unique Identifier) is the term preferred by Microsoft technologies. Technically, a GUID is a Microsoft implementation of the UUID standard.