使用两种编程语言生成的java UUID？

Question

使用“Ruby”和“Java”两种编程语言生成的UUID会是唯一的吗

Answer 1

是的，UUID（通用唯一标识符）将是唯一的

从wikipedia

only after generating 1 billion UUIDs every second for the next 100 years, the probability of creating just one duplicate would be about 50%. Or, to put it another way, the probability of one duplicate would be about 50% if every person on earth owns 600 million UUIDs.