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Twitter Shifting More Code to JVM, Citing Performance and Encapsulation As Primary Drivers

While it almost certainly remains the largest Ruby on Rails based site in the world, Twitter has gradually been moving more and more of its stack to the JVM. Last year the company announced that its back-end message queue had been re-written in Scala, and more recently it moved the search stack to Java, making Twitter search around three times faster.

Charles Humble
on Jul 04, 2011
Ars Magna: the revolution is overdue

This essay is an intentionally provocative and controversial call for a real revolution in how we conceive of and practice software development. The intent is to stimulate discussion.

Dave West
on Aug 04, 2010
Wonderland Of SOA Governance

Michael Poulin elaborates on the differences between of governance and management and tries to explore the 'wonderland' of governance in a service-oriented environment. He defines SOA Governance, explores the relationship between governance and enterprise architecture, and discusses accountability and ownership of governance efforts, and how practitioners can instrument SOA governance.

Michael Poulin
on Nov 11, 2009
Communication Flexibility Using Bindings

In this article, we will look at an important feature of SCA - its support for a wide variety of communication protocols and how to use SCA bindings on services and references to decouple your business code from communication protocols. Finally we'll take a look at the SCA domain to see how bindings operate in and outside the domain.

Anthony Elder Simon Nash Simon Laws Raymond Feng Haleh Mahbod
on Jun 30, 2009
Concurrency and Immutability

This article explores the issue of immutability as a function of concurrency demands in modern software applications. The discussion occurs in the general context of dependency injection.

Dhanji Prasanna
on Jun 26, 2009
Domain-Driven Design in an Evolving Architecture

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.

Mat Wall Nik Silver
on Jul 22, 2008
Using singleton classes for object metadata

So you have a bunch of objects - let's call it an object graph - provided by some API. Now you want to to process the objects - which requires some intermediate data, for instance: the process creates some metadata that needs to be stored with the objects. The problem: where to store the metadata? We'll show how to use Ruby singleton classes to handle this problem.

Werner Schuster
on Dec 05, 2007
Book Review: Implementation Patterns

Kent Beck's new book, Implementation Patterns, is a book about writing code in Java. The patterns in this book are based on Kent's reading of existing code as well as his own programming habits. The patterns in this book are meant to be a coherent view of how to write code people can understand that serves human as well as economic needs.

Amr Elssamadisy
on Nov 06, 2007