[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-7190) Cache JDBC proxy class defintions

Cache JDBC proxy class defintions --------------------------------- Key: HHH-7190 URL: https://hibernate.onjira.com/browse/HHH-7190 Project: Hibernate ORM Issue Type: Improvement Components: core Affects Versions: 4.0.1, 4.1.1 Environment: java version "1.6.0_23" Java(TM) SE Runtime Environment (build 1.6.0_23-b05) Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode) Reporter: Lucas POUZAC Assignee: Steve Ebersole Labels: performance Fix For: 4.1.2 Attachments: hibernate.jpg Time Spent: 44m After migrating our application to version 4.0.1 of hibernate, we noticed a performance degradation. (same problem with the version 4.1.1) Before migration, the average response time of our http request was 747ms (during load test). Since the migration, the average response time is greater than 1200ms (during the same load test). After recording the behavior of the JVM, we note that Hibernate uses methods of the java api with synchronized blocks (java.lang.reflect.Proxy.getProxyClass (...)). See attachment.