I'd prefer to not have the IDs longer than they need to be. Something that'd be unique across a single server farm over some fixed interval of time like 100 days is good enough for my purposes.

When I need unique IDs, I usually have a RDBMS running somewhere that has solved all of the nasty race and locking problems. What if you would simply (ab)use a RBDMS, create a sequence there, and get the sequence's nextval whenever you need an ID?

Or, if you work across several RDBMS, you could concat a server ID (IP address or hostname, if you have no better idea) and a sequence number into a locally unique ID.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^3: How do I get a unique Perl Interpreter ID? by afoken
in thread How do I get a unique Perl Interpreter ID? by wrog

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