What is a UUID / GUID?
A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier), is a 128-bit number used to identify information in computer systems. The term "Universally Unique" implies that it is practically impossible for the same UUID to be generated twice.
UUID Version 4 explained
This tool generates Version 4 UUIDs. These are randomly generated using random numbers. The probability of a collision (two identical UUIDs being generated) is so infinitesimally small that it can be ignored for all practical purposes.
Why use UUIDs?
- Database Keys: Perfect for primary keys in distributed databases where auto-incrementing integers are difficult to manage.
- Session IDs: Securely identify user sessions without predictable patterns.
- Asset Tagging: Uniquely tag files, uploads, and resources across different systems.