Can anyone explain how the UUID() function works?

[vsr1]

UUID generation algorithm and performance

What’s the best-performing way to choose unique document IDs in Couchbase? I know that Couch DB != Couchbase, but the Couch DB documentation is pretty clear that asking the server to generate sequential UUIDs is better than generating random UUIDs: Impact of UUID choices: the choice of UUID has a significant impact on the layout of the B-tree, prior to compaction. For example, using a sequential UUID algorithm while uploading a large batch of documents will avoid the need to rewrite many int…