UUID generated using two programming languages?
Will the UUID generated using two programming languages say 'Ruby' and 'Java' be unique?
Yep. UUID is a standard format - the formatting will be the same in any language that accurately implements a UUID function. As for the IDs themselves being unique? You have a much better chance of being struck by lightning while being attacked by a shark, after your second plane crash of the day, after winning the lottery a few times in a row, than generating two identical UUIDs. :)
Yes a UUID (universally unique identifier) will be unique. From 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.
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