Considering the post I've made about the sequential guid performance on Microsoft.NET framework (see What are the performance improvement of Sequential Guid over standard Guid?) does somebody have a proper, sure, fast and well working Java implementation of the same algorithm implemented in the Windows DLLs?
Regards Massimo
See this article: http://www.informit.com/articles/article.aspx?p=25862&seqNum=7 (linked to Page 7).
It contains an algorithm for what the author refers to as "COMB" Guids; I reproduce his code (SQL) below:
SET @aGuid = CAST(CAST(NEWID() AS BINARY(10))
+ CAST(GETDATE() AS BINARY(6)) AS UNIQUEIDENTIFIER)
Trivial to convert this to Java, or your desired language. The obvious underlying principle is to make the date a component of the Guid. The entire article is a good read, as he does a nice analysis of the performance of the various approaches.