Opinions about ORMs vary widely. Some see it as an essential tool for simplifying data access while others claim it greatly increases complexity while robbing applications of much needed performance. Sam Saffron and Rob Conery have found a middle ground in what’s known as a Micro ORM.
OO7J is a Java version of the original OO7 benchmark (written in C++). This project includes benchmarking Object Relational Mapping (ORM) tools. Currently there are implementations for Hibernate on PostgreSQL, MySQL, db4o and Versant databases. InfoQ and Roberto V. Zicari from ODBMS.ORG recently interviewed Pieter van Zyl, creator of the OO7J benchmark.
This article explores tuning techniques for Hibernate-based applications, focusing on tuning topics that are effective but poorly documented, such as inheritance mapping, second level cache and enhanced sequence identifier generators. It also provides some background database information which is essential for tuning Hibernate.
Scala and Spring are a promising match. Based on a concrete example, this article shows how the power of Scala combined with the proven and productive Spring framework can be unleashed. 5
Using the new DLR features in .NET 4 you can build a configuration-free ORM that uses the normal object-dot-property syntax without interfaces to define, classes to implement, or XML data mapping. 8
Billy McCafferty presents S#arp Architecture, an ASP.NET MVC framework meant to leverage current best practices in architecting ASP.NET web applications. 6
Alois Reitbauer specifies several architectural anti-patterns that one should stay away from and which can downgrade an application’s performance. 28
Smalltalk, a language that has had a big influence on Ruby, is making a comeback. We take a look at the current situation and talk to Randal L. Schwartz about Smalltalk. 5
Mat Wall and Nik Silver explain how their has been using Domain-Driven Design in an evolving and Agile environment, at high traffic news site guardian.co.uk. 15
Leading persistence solution architects their views on the current state of the union in persistence in the Java community. 2
Using a domain model is not just creating the actual domain model classes and using them, due to infrastructure needs. Mats Helander explains how to use handle this complexity in a simple way. 38
Srini & Kavitha Penchikala give an overview of the support provided by Spring framework in the areas of unit and integration testing, with a sample application. 16