Is it guaranteed that UUIDs assigned to bitbucket resources are not reused even after the resources are removed?

[skawaguchi]

As mentioned in the documentation below, UUIDs are assigned to some kinds of Bitbucket resources, such as users, teams, and repositories.
https://confluence.atlassian.com/bitbucket/use-the-bitbucket-cloud-rest-apis-222724129.html#UsetheBitbucketCloudRESTAPIs-uuid-mainUniversallyUniqueIdentifier%28UUID%29

I'd like to know if UUIDs assigned to resources are not reused even after the resources are removed just in case.

FYI, in the case of GitHub, each resource has a numeric ID and it is never reused after the resource is removed.
So I am expecting Bitbucket to do the same.

Thanks in advance.

[abhin-atl · Accepted solution]

Hi @Shinya Kawaguchi,

Yes, Bitbucket Cloud's UUIDs are unique and will not be recycled. You can safely assume that a UUID for a repo is unique to it even though repos get deleted.

P.S. Technically, there is a exceedingly small possibility of a UUID showing up again, but the odds are so minuscule that you can safely ignore that possibility. Bitbucket Cloud uses Version 4 UUIDs, which according to this wikipedia calculation is many order of magnitudes less likely to collide than the chances of a person getting hit by a meteorite in a given year. To quote from that section "...only after generating 1 billion UUIDs every second for the next 100 years, the probability of creating just one duplicate would be about 50%."

[skawaguchi]

Thanks a lot @Abhin Chhabra for your prompt response. I was able to have much confidence in my implementation.