My Talks at JavaOne 2012: “Lessons learned from JVM Languages (Java vs Groovy vs Scala vs Clojure vs JRuby vs Jython vs Kotlin)” and “Cloud Integration with Apache Camel”

Posted in Cloud, EAI, ESB, IT Conferences, Java / JEE on October 3rd, 2012 by Kai Wähner

These days, I am at JavaOne 2012 in San Francisco. That’s the largest and most important Java conference worldwide. In this blog post, I wanna share the slides of my two talks…

Lessons learned: Use of Modern JVM Languages besides Java

I explain my lessones learned while using other programming languages on the Java Platform besides Java, e.g. Groovy, Scala, Clojure, JRuby, Jypthon, Erjang, and others.

Lessons learned: Use of Modern JVM Languages besides Java – JavaOne 2012 from Kai Waehner

 

Tags: , , , , , , , , , , , , , , , , , , , , , , ,

Book Review “Cloud Computing Architected – Solution Design Handbook” by John Rhoton and Risto Haukioja

Posted in Cloud on October 15th, 2011 by admin

“Cloud Computing Architected – Solution Design Handbook” by John Rhoton and Risto Haukioja was published by Recursive Press in May 2011.

This book is a great addition to other books about cloud computing.

Why? It does NOT give a high-level overview of cloud computing. It does NOT explain the business value. Finally, it does NOT contain tutorials for any specific cloud products.

So what is the content of the book? It covers architectural options for designing a cloud. The book explains many important decisions which have to be done when creating a cloud service or a cloud application.

Tags: , , , , , , , , , , , , , , , , , , ,

Rapid Cloud Development with Spring Roo – Part 2: VMware Cloud Foundry

Posted in Application Server, Cloud, Java / JEE on August 12th, 2011 by Kai Wähner

Spring Roo is a tool to offer rapid application development on the Java platform. I already explained when to use it: http://www.kai-waehner.de/blog/2011/04/05/when-to-use-spring-roo.  Spring Roo supports two solutions for Cloud Computing at the moment: Google App Engine (GAE) and VMware Cloud Foundry. Both provide the Platform as a Service (PaaS) concept. This article will discuss the Cloud Foundry support of Spring Roo. GAE was discussed in part 1 of this article series (http://www.kai-waehner.de/blog/2011/07/18/rapid-cloud-development-with-spring-roo-%E2%80%93-part-1-google-app-engine-gae).

Deployment of a Cloud Foundry Application to the Cloud

The reference guide of Spring Roo gives an introduction at http://www.springsource.org/roo/guide?w=base-cloud-foundry, which describes the combination of Spring Roo and Cloud Foundry. In a nutshell, there is not much to do to deploy your (CRUD-) application in the Cloud Foundry cloud.

Tags: , , , , , , , , , , , , , , , , ,

Rapid Cloud Development with Spring Roo – Part 1: Google App Engine (GAE)

Posted in Cloud, Java / JEE on July 18th, 2011 by Kai Wähner

Spring Roo is a tool to offer rapid application development on the Java platform. I already explained when to use it: http://www.kai-waehner.de/blog/2011/04/05/when-to-use-spring-roo.  Spring Roo supports two solutions for Cloud Computing at the moment: Google App Engine (GAE) and VMware Cloud Foundry. Both provide the Platform as a Service (PaaS) concept. This article will discuss the GAE support of Spring Roo. Cloud Foundry will be analyzed in part 2 of this article series.

Tags: , , , , , , , , , , , , , , , , , , ,

Cloud Computing Heterogeneity will require Cloud Integration – Apache Camel is already prepared!

Posted in Application Server, Cloud, ESB, Java / JEE, SOA on July 9th, 2011 by Kai Wähner

Cloud Computing is the future – if you believe market forecasts from companies such as Gartner. I think so, too. But everybody should be aware that there won’t be one single cloud solution, but several clouds. These clouds will be hosted at different providers, use products and APIs from different vendors and use different concepts (IaaS, PaaS, SaaS). Thus, in the future you will have to integrate these clouds as you integrate applications today.

Tags: , , , , , , , , , , , , , , , , , , , , ,

When to use Spring Roo?

Posted in Application Server, Cloud, Java / JEE, Web Framework on April 5th, 2011 by Kai Wähner

In this article, I will tell you about my experiences with Spring Roo. I will give recommendations when to use Spring Roo and when not to use it (yet).

What is Spring Roo?

“Spring Roo is a lightweight developer tool that makes it fast and easy to deliver instant results. Best of all, you code 100% in Java and get to reuse all your existing Java knowledge, skills and experience. You’ll like it – and have plenty of fun too!” (http://www.springsource.org/roo)
Many introductory articles exist already, just use Google if you do not know Spring Roo yet. In a nutshell: Spring Roo is a Java-based tool (using the SpringSource Tool Suite which is based on Eclipse). It uses AspectJ to simulate many features of Grails and other frameworks with dynamic languages to improve the developer experience.

Tags: , , , , , , , , , , , , , , ,

Report: Cloud Camp Berlin, 4th October 2010

Posted in Cloud, IT Conferences, SOA on October 5th, 2010 by Kai Wähner

Cloud Camp, 4th October 2010, Berlin

The Cloud-Camp was a free „Unconference“, which took place one day before the SOA / Cloud Symposium 2010 in Berlin, Germany. You can find more information about Cloud Camps at http://www.cloudcamp.org.

In the following, I want to tell you about my impressions from the Cloud Camp in Berlin.

Lightening Talks

The „Unconference“ startet with some 5-minute Lightening-Talks (similar to “Pecha Kucha“). Some interesting theses were presented, e.g.:

Misconceptions of Private Clouds

Tags: , , , , , , , , , , , , , , , ,

Report: Herbstcampus 2010 (IT-Conference in Nuremberg) about Java, JEE, .NET and SOA

Posted in IT Conferences, Java / JEE on September 15th, 2010 by Kai Wähner

Herbstcampus 2010

I was at the Herbstcampus 2010 in Nuremberg, that is a four-day IT conference. The main topics consist of Java, JEE, .NET, Agile Development and SOA. Although, prominent speakers are missing, many very good and interesting sessions were available. Here you can find more information: Herbstcampus.

Tags: , , , , , , , , , , , , , , , , , , ,