Unique serial number in a java web application.

Posted by Zenzen on Stack Overflow See other posts from Stack Overflow or by Zenzen
Published on 2010-12-23T13:47:06Z Indexed on 2010/12/23 13:54 UTC
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java

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java-ee

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guid

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uuid

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uniqueidentifier

I've been wondering what's the correct practice for generating unique ids? The thing is in my web app I'll have a plugin system, when a user registers a plugin I want to generate a unique serial ID for it. I've been thinking about storing all numbers in a DB or a file on the server, generating a random number and checking whether it already exists in the DB/file, but that doesn't seem that good. Are there other ways to do it? Would using the UUID be the preferred way to go?

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