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 Post subject: Need help understanding second-level cache statistics
PostPosted: Tue May 27, 2008 6:51 pm 
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Joined: Tue May 27, 2008 6:10 pm
Posts: 1
Hibernate version: 3.2

Name and version of the database you are using: Oracle 10g

We're logging second-level cache statistics in order to fine-tune our cache configuration. The statistics we're logging for each cache region are: number of objects it memory (and percent of capacity), hit count, miss count, are put count. In a number of cases, we're seeing a miss count that is below the put count which strikes us as distinctly odd. Here's the extreme example:

EntityClassA : 1370 of 10000 (13.7%), hits: 5208279, misses: 0, puts: 6149

(Instances of this particular entity are only loaded as part of getting a query result set, just in case that is relevant.)

Can anyone provide a bit more detail as to what the hit, miss, and put count second-level cache statistics mean, please, and why we might be seeing these results?

Thanks in advance,
Shaun


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