Related Knowledge

The Globally Unique Identifier (GUID) is a 128-bit digital identifier generated by an algorithm. GUID is mainly used in networks or systems with multiple nodes and multiple computers. Ideally, no computer and no computer cluster will generate two identical GUIDs. The total number of GUIDs reaches 2^128 (3.4×10^38), so the possibility of randomly generating two identical GUIDs is very small, but not zero. Therefore, the algorithm used to generate GUIDs usually adds non-random parameters (such as time) to ensure that such repetitions do not occur.