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The new year has started, with it comes one of the last opportunities to look back at 2010. So what happened, what did I try out, what did I like and what didn’t I like. I also want to have a short look at what you liked, based on the number of visitors. This post will nog contain new technical stuff, only old stuff Continue reading Recap of the year 2010
Some days a go I wrote a blogpost about Learning Mongo. Of course I did not stop learning. As a good habit, I wrote down the next things I learned and played around with. That is what this blogpost is about, next steps in the learning process of Mongo. This post mainly focussus on Replication Sets, object Identity, WriteConcern and a bit about Sharding. The case for most of the code used in this blog is about creating an EventStore for the Axonframework. Continue reading Still learning MongoDB
One of the technical fashionable terms is NoSQL. That is not really the reason why I wanted to have a look at it, but still it is a good reason to at least have an understanding of what it is. The best way to do this is to try it out. Together with Allard I am creating a new sample for the Axon framework. This sample must support a lot of inserts and fast queries. This can be done using an sql database, but using a NoSQL database felt good as well. Therefore I started replacing the jpa implementation with a Mongodb implementation. This blog post is about the things I have learning while implementing Mongo. Be warned, I am not an expert, so if you spot improvement, please let me know. Continue reading Learning Mongodb I am a experienced maven user. Sometime I love it, sometimes I hate it. I like it a lot better than ant, but in some situation you would like maven to be easier and more descriptive. The past year there was a lot of fuzz about Gradle. This would give you the best of ant as well as the best of maven, and even more. My first encounter was not very positive, but I kept it in my mind to try it later with a more serious project. This blogpost is about that second more serious try. It will not teach the gradle experts anything, but it will be an easy introduction in to what gradle has to bring for people that are just interested in gradle. Last Thursday (July 22nd, 2010) Rob Pike, a Principal Engineer at Google, gave a talk at the O’Reilly Open Source conference. In this talk he stated that established languages such as C++ and Java are too complex and not adequately suited for today’s computing environments. He then proceeded with some criticism of dynamically typed languages (that I share) and finally ended up plugging the Go language (which he co-developed) as a solution to the problem. Now, Rob Pike is not nobody (in addition to being a Google principle engineer he has C and Unix credentials), plus the Go language has the Google brand name on it, so I thought it would be a good idea to check it out…. Continue reading An evening on the Go I have just upgraded the wordpress software to version 3. It all seemed to work fine. However I noticed errors in the archive pages. Therefore I wanted to upgrade to the latest and greatest atahualpa theme that I use for my blog. I should not promote it to much, or else everybody else starts [...]
Continue reading Creating a sample for axon using flex and parsley
For my current customer I had to create an rss feed. In the java domain you immediately grab Rome to do the job. There was a catch. My customer wants (with good reason) to have feeds validated by the w3c feed validator. This turned out to be a slightly more complicated job. Luckily Rome has good support for extensions, so at least it was possible. In this blog post I describe the challenges I had creating the validated feed. If you want more in depth information please check my post on my employers blog : serving a heavy load rss feed with spring 3 and ehcache. Continue reading Creating a w3c validated rss feed using Rome and spring 3 |
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The last weeks or maybe even months, I have spent time getting to understand the Axon Framework created by Allard. Axon is a framework that can help developers created a scalable and maintainable application based on Command Query Responsibility Segregation (CQRS) principles. Each morning Allard and I discussed the framework and the sample we wanted to have. Since I know my way around flex and Axon makes heavily use of events, I decided to create a flex client that could demonstrate some cool features of the Axon framework.
This post is mainly about flex and 
