When using a HiLo ID generation strategy, what types should be used to hold Ids?

Posted by UpTheCreek on Stack Overflow See other posts from Stack Overflow or by UpTheCreek
Published on 2010-05-10T08:15:35Z Indexed on 2010/05/11 6:44 UTC
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hilo

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database-design

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nhibernate

I'm asking this from a c#/NHibnernate perspective, but it's generally applicable. The concern is that the HiLo strategy goes though id's pretty quickly, and for example a low record-count table (Such as Users) is sharing from the same set of id's as a high record-count table (Such as comments). So you can potentially get to high numbers quicker that with other strategies. So what do people recommend?

Code side: int/uint/long/ulong?

DBSide: int/bigint?

My feeling is to go with longs and bigingts, but would like a sanity check :)

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