Java Persistence Performance

A blog on Java, performance, scalability, concurrency, object-relational mapping (ORM), Java Persistence API (JPA), persistence, databases, caching, Oracle, MySQL, NoSQL, XML, JSON, EclipseLink, TopLink, and other fun stuff.

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Monday, March 7, 2011

JVM Performance - Part III - Concurrent Maps

Concurent Maps The main difference between Hashtable and HashMap is that Hashtable is synchronized. For this reason Hashtable is still used ...

Wednesday, January 26, 2011

JVM Performance, Part II - JVM Bazaar

As promised, I have results from running some of the tests in other JVMs. The most interesting results were from the Map test and the Metho...

Friday, December 17, 2010

What is faster? JVM Performance

Java performance optimization is part analysis, and part superstition and witch craft. In deciding how to optimize their applications a lo...

Thursday, November 18, 2010

Batch Fetching, part II - Journey to Big Data

In my last post I investigated different ways to optimize the loading of objects and their relationships. I presented some performance resu...

Monday, August 9, 2010

Batch fetching - optimizing object graph loading

Probably the biggest impedance mismatch between object-oriented object models and relational database data models, is the way that data is...

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