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.

As

Alex Miller's technical blog on Java, concurrency, programming, design, languages, and more

Hibernate et la gestion du cache

How to unit test NHibernate code using an in memory SQL Lite database.

: base(typeof(Blog).Assembly)

Unit Testing NHibernate from Ayende

In short, passing options hash containing :conditions, :include, :joins, :limit, :offset, :order, :select, :readonly, :group, :having, :from, :lock to any of the ActiveRecord provided class methods, is now deprecated.

There are side-benefits to immersing yourself in MS-land. Like finding really solid data manipulation libraries written in javascript.

JSINQ is a complete implementation of LINQ to Objects for JavaScript. It allows you to write SQL-like queries against arrays, DOM node lists or your own custom enumerable types.

JSINQ is the JavaScript library that allows you to write SQL-like queries against arrays and DOM node lists. JSINQ is a complete implementation of LINQ to Objects in JavaScript. What that means is that if you know LINQ and you know JavaScript, you know JSINQ. JSINQ is both an API-compatible implementation of System.Linq.Enumerable and a complete query-expression compiler. That's right: you can write LINQ-style queries in JavaScript. And if that isn't enough: JSINQ is also very liberally licensed, well-document, reasonably well-tested (the Enumerable-part) and currently in beta. So give it a go!

LazyProxyFactory

Caching is easy to screw up. Usually it's a manual process which is error-prone and tedious. It's actually quite easy to cache, but knowing when to invalidate which caches becomes a lot harder. There is a subset of caching the caching problem that, with Django, can be done quite easily. The underlying idea is that every Django model has a primary key, which makes for an excellent key to a cache. Using this basic idea, we can cover a fairly large use case for caching, automatically, in a much more deterministic way. Let's begin.

some sample caching code

t Level Cache (aka Transaction layer level cache)

net.sf.ehcache.hibernate.Provider

performance tuning tips for hibernate.Best article