Queue - May/June 2008

of defense against configuration errors that could lead to performance degradation or bugs.

Some of the implementation strategies discussed here are focused on optimization and performance, whereas others are geared more toward ease of use. Some ORM products have locked themselves into one particular scheme, whereas others supply multiple schemes and offer choices, providing experienced users with opportunities to benefit from the performance options that may be optimal for their applications. The better you understand the options, the better qualified you will be to build successful, performant ORM-based applications. Q

REFERENCES

1. Fernandez, J., Fernandez, A., Pazos, J. 2005. Optimizing Web services performance using caching. International Conference on Next Generation Web Services Practices.

2. Fowler, M. 2004. Patterns of Enterprise Application Architecture. Addison-Wesley.

3. Keith, M., Schincariol, M. 2006. Pro EJB 3: Java Persistence API. Apress.

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MIKE KEITH has more than 15 years of teaching, research, and practical experience in distributed systems and object persistence. He sits on a number of industry specification expert groups and was the co-specification lead of the 1.0 version of JPA (Java Persistence API). He holds a master’s degree in computer science from Carleton University, where he also spent time as a lecturer. He has spoken at numerous conferences worldwide, written several papers and articles for industry magazines and journals, and is coauthor of Pro EJB 3: Java Persistence API (Apress, 2006). He lives in Ottawa, Canada, and is employed by Oracle as a persistence and server architect. RANDY STAFFORD has 20 years of experience as a developer, analyst, architect, manager, consultant, and author. He currently works for Oracle’s middleware development organization, where he engages globally for proof-of-concept projects, architecture reviews, and production crises with diverse customer organizations, specializing in grid, SOA, performance, HA, and JEE/ORM work. He was a contributor to Martin Fowler’s Patterns of Enterprise Application Archi- tecture (Addison-Wesley, 2002) and Floyd Marinescu”s EJB Design Patterns (Wiley, 2002). He lives in Denver, Colorado, with his wife and family. © 2008 ACM 1542-7730/08/0500 $5.00

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