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From Miguel Verde <>
Subject Re: How to generate 'unique' identifiers for use in Cassandra
Date Mon, 26 Apr 2010 20:39:46 GMT if you don't need transactional
ordering, ZooKeeper or something comparable if you do.

2010/4/26 Roland Hänel <>

> Typically, in the SQL world we use things like AUTO_INCREMENT columns that
> let us create a unique key automatically if a row is inserted into a table.
> What do you guys usually do to create identifiers for use in Cassandra?
> Do we only rely on "currentTimeMills() + random()" to create something that
> is 'unique enough' (but theoretically not fail-safe)? Or are some people
> here using systems like ZooKeeper for this purpose?
> -Roland

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