Middle-tier database caching for e-business
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Performance and scalability of EJB applications
OOPSLA '02 Proceedings of the 17th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Queries Independent of Updates
VLDB '93 Proceedings of the 19th International Conference on Very Large Data Bases
Entity Bean A, B, C's: Enterprise Java Beans Commit Options and Caching
Middleware '01 Proceedings of the IFIP/ACM International Conference on Distributed Systems Platforms Heidelberg
Improving Application Throughput With Enterprise JavaBeans Caching
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
An Architectural Evaluation of Java TPC-W
HPCA '01 Proceedings of the 7th International Symposium on High-Performance Computer Architecture
An in-depth look at the architecture of an object/relational mapper
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Interprocedural query extraction for transparent persistence
Proceedings of the 23rd ACM SIGPLAN conference on Object-oriented programming systems languages and applications
Deep typechecking and refactoring
Proceedings of the 23rd ACM SIGPLAN conference on Object-oriented programming systems languages and applications
Memory-Efficient index for cache invalidation mechanism with OpenJPA
WISE'12 Proceedings of the 13th international conference on Web Information Systems Engineering
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OpenJPA is an implementation of the Java persistence API (JPA) for Apache, with a caching layer for databases queries to share cached objects among multiple client sessions. This is a critical component for high performance, since the caching layer can handle many database requests. However the performance is limited when an application includes write transactions, because the current OpenJPA cache invalidation mechanism is course-grained and this results in a low cache hit rate. We have implemented two kinds of finer-grained invalidation mechanisms by using query dependency analysis and integrated them into OpenJPA. In our experiments with TPC-W, the OpenJPA with the finer-grained invalidation mechanisms outperformed the current OpenJPA. In addition, we created many more mixes TPC-W, and found that the finer mechanism is not necessarily the better, that is, the best mechanism varies depending on the mixes.