Comments on: CreateUUID() vs. java.util.UUID Performance

By: brian

brian — Sat, 21 Mar 2009 14:19:21 +0000

@Nathan – I thought the same thing; removeChars(), uCase()… surprising.

By: Nathan D

Nathan D — Sat, 21 Mar 2009 06:16:13 +0000

That difference is with the string operations you are doing too, right? Pretty amazing.

By: Brad Wood

Brad Wood — Sat, 21 Mar 2009 04:03:14 +0000

Yes, Java.util.UUID was introduced in Java 5, so if you are on ColdFusion 6 or 7, you can use JUG. I have tested it and it is also very fast:
http://jug.safehaus.org/

By: brian

brian — Fri, 20 Mar 2009 21:56:22 +0000

@David – my tests above were on CF 8.0.1. You’ll need CF8 (Java 5) to use java.util.UUID natively I believe. There are other open source packages available you could use with CF7.

By: David Lakein

David Lakein — Fri, 20 Mar 2009 20:42:54 +0000

Which version of CF?

By: Henry Ho

Henry Ho — Fri, 20 Mar 2009 18:23:01 +0000

@John, why don’t you use MS-SQL’s NEWID() instead?

By: John Whish

John Whish — Fri, 20 Mar 2009 09:04:44 +0000

Good tip, thanks. I currently use mssql GUID’s in my database and have been noticing a performance issue when looping through inserts and using Insert( “-”, CreateUUID(), 23 ).