10 ms·

We encountered some of these same issues and wrote this library to mitigate them: https://github.com/groupon/locality-uuid.java https://github.com/groupon/local

We encountered some of these same issues and wrote this library to mitigate them: https://github.com/groupon/locality-uuid.java https://github.com/groupon/locality-uuid.java. I think UUIDs make good unique ids overall, particularly in distributed environments where id generation can't be coordinated, but should be used carefully, as the article notes.

X-Istence 12y ago
Why not just use UUID 4: http://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_.28random.29 http://en.wikipedia.org/wiki/Universally_unique_identifier#V... This will have an better distribution for when they are used as keys as well.
- e12e 12y ago
  As far as I can tell, neither MySQL, nor MariaDB has a function for generating type 4 UUIDs. It's of course possible to generate the UUIDs on the client side, but then it's not really an alternative to auto-incrementing surrogate keys.