terraza de aravaca: JPA implementations comparison: Hibernate, Toplink Essentials, Openjpa, Eclipselink
http://terrazadearavaca.blogspot.com/2008/12/jpa-implementations-comparison.html

Vergleich verschiedener JPAs

In looking at your code, none of your queries actually return an objects. They are all count queries, returning a single number. Hardly a typical usage of object-relational mappings, makes the comparison not very useful.

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After discovering that there was a lack of documentation on how to use JPA in real-life scenario's, the author has written a series of blog posts about the JPA implementation patterns he discovered while writing JPA code

After discovering that there was a lack of documentation on how to use JPA in real-life scenario's, I have written a series of blogs about the JPA implementation patterns I discovered while writing JPA code. To wrap up the series, I have made an overview of all the patterns that have been discussed for easy reference.

Understanding Caching in Hibernate – Part Three : The Second Level Cache Performance, Scalability and Architecture – Java and .NET Application Performance Management (dynaTrace Blog)

In particular I read a whitepaper several years ago a

In the last posts I already covered the session cache as well as the query cache. In this post I will focus on the second-level cache. The Hibernate Documentation provides a good entry point reading on the second-level cache. The key characteristi

LazyProxyFactory

t Level Cache (aka Transaction layer level cache)

net.sf.ehcache.hibernate.Provider

performance tuning tips for hibernate.Best article

EntityManagerFactory