UUIDs are generated using a combination of time and space parameters. The first group contains eight digits, the second and third groups contain four digits each, the fourth group contains three digits, and the final group contains 12 digits. The UUID is composed of 32 hexadecimal digits that are separated by hyphens into five groups. The unique nature of UUIDs is guaranteed by the fact that they are generated using a combination of time and space parameters, ensuring that no two UUIDs are the same. UUID is a 128-bit unique identifier that is used to identify data entities in computer systems. This means that any given combination of input and namespace will result in the same UUID, every time.In this tutorial, I have covered how to generate Unique ID (UUID) in Node.jsģ). These two pieces of information are converted to a UUID using the SHA1 hashing algorithm.Īn important point to note is UUID v5 is consistent.
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