[jboss-user] [Beginner's Corner] - Re: How to implement the cache in jboss?i want the steps to make cache some file

[Wolf-Dieter Fink]

Wolf-Dieter Fink [http://community.jboss.org/people/wdfink] created the discussion

"Re: How to implement the cache in jboss?i want the steps to make cache some file"

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Hi,
'cache some files' sounds like a EJB specification violation.
You should not access from EJB's any file (see  http://www.oracle.com/technetwork/java/javaee/tech/index-jsp-142185.html http://www.oracle.com/technetwork/java/javaee/tech/index-jsp-142185.html)

If you want to read something like a configuration you should implement a MBean to read the file and provide the information.

And remember that use of a cache should only be implemented if you have detected a bottleneck and measured that it will help.
In my experience caches where implemented without effect (e.g. not often used) or negative effect (e.g. performance reduced or nasty sideeffects)
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