Jason Westra wrote:
I disagree with you here. It depends on the type of reads you are doing. A lot of applications increase performance by offloading processing to the database with very complex queries and stored procedures, and the current CMP design can not benefit from this design. The JBoss 4.0 design will be able to benefit from hand tuned queries.Hi JBoss friends,I tend to agree with Bill and Dain's last posting here. There are certain things that CMP is not designed to do *well* and large, heavy reads is one of them.
My goal for the 4.0 architecture is to enable the easy use of a hybrid approach to CMP. In this design you can use CMP for the 98% of you app that performs well under the current code and for the 2% that needs hand code you can plug in a custom interceptor to tune queries.I'd venture to guess the same performance problem will occur on other app servers, in which case, it is not a war of servers, but a principle of application design (SSB+JDBC vs. CMP). If the numbers come in much better from testing on other app servers, we need to get JBoss "fixed". Until then, I'd recommend a different approach than CMP.
-dain
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