![]() GOOGLE UUID GENERATOR GENERATORIf you are really truly experiencing a bottleneck on this, it might not be an appropriate solution to find a master generator because it might not have the guarantees you need. If you are running in a virtual machine or container, sometimes this is more difficult because there might be less entropy to measure. While I don't know a lot of the specifics, the is needs to determine that it has observed enough variation in things like temperatures and network heuristics to combine with the time to be able to give a pretty good guarantee that it is really giving a number that cannot be predicted. GOOGLE UUID GENERATOR FULLThus, for variant 1 (that is, most UUIDs) a random version-4 UUID will have 6 predetermined variant and version bits, leaving 122 bits for the randomly generated part, for a total of 2^122, or 5.3×10^36 (5.3 undecillion) possible version-4 variant-1 UUIDs.I don't have a lot of the optimization experience when might need to answer this question full deep full way, but I do understand generally that in order to do get enough entropy for the operating system to give you a cryptographically unique (slightly different concept than random, but related) it takes a little bit of time. As in other UUIDs, 4 bits are used to indicate version 4, and 2 or 3 bits to indicate the variant (102 or 1102 for variants 1 and 2 respectively).
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